Korelasi Karakter Vegetatif dan Generatif Terhadap Produksi

ABSTRAK Analisis sidik lintas dibutuhkan untuk membantu pelaksanaan seleksi tanaman terhadap karakter yang bersifat poligenik (hasil atau komponen hasil) dengan mempertimbangkan karakter-karakter lain yang berkorelasi nyata. Penelitian ini bertujuan untuk mengetahui karakter vegetatif dan generatif yang berpengaruh nyata terhadap produksi kelapa Dalam Mapanget (DMT) generasi selfing sebagai dasar melakukan seleksi pohon induk untuk perakitan kelapa unggul hibrida dan mengetahui pengaruh penyerbukan (penyerbukan terbuka dan silangdalam) terhadap korelasi antar karakter pada populasi yang terbentuk. Pengamatan dilakukan terhadap kelapa DMT bersari bebas (DMT OP 32 dan DMT OP 55) dan DMT hasil penyerbukan sendiri (DMT S3-32, DMT S4-32, DMT S3-55, dan DMT S4-55). Analisis sidik lintas dilakukan pada karakter tinggi batang, lingkar batang 150 cm, jumlah daun dan jumlah tandan. Hasil analisis menunjukkan bahwa tidak terdapat karakter yang berkorelasi nyata baik secara langsung maupun tidak langsung pada kelapa DMT OP-32, sedangkan pada kelapa DMT OP-55 karakter jumlah tandan memiliki pengaruh langsung terbesar terhadap peningkatan produksi buah per tandan. Karakter tinggi batang Kelapa DMT S3-32 dan DMT S3-55 memiliki sumbangan terbesar terhadap peningkatan produksi buah per tandan pada kedua aksesi tersebut. Jumlah daun berkorelasi nyata secara langsung terhadap produksi buah per tandan pada DMT S4-32. Tinggi batang, lingkar batang 150 cm dan jumlah daun kelapa DMT S4-55 berkorelasi nyata secara langsung dengan produksi buah per tandan. Kelapa DMT 32 dan DMT 55 silangdalam generasi ke tiga dan ke empat menunjukkan hubungan antar karakter yang lebih erat dibanding populasi DMT hasil penyerbukan terbuka yang dibuktikan oleh jumlah karakter yang berkorelasi nyata baik secara langsung maupun total terhadap produksi buah yang lebih banyak.Kata kunci: Analisis sidik lintas, penyerbukan terbuka, silangdalam, karakter vegetatif, karakter generatif. Correlation on Vegetative and Generative to Production of the Six Mapanget Tall Coconuts Due Self PollinationABSTRACT Path analysis was needed to assist the implementation of the crops selection on polygenic character (yield or yield components) with considering to the other characters that significantly correclated. This study aims to determine vegetative and generative characters impact on production of Mapanget Tall Coconut (MAT) significantly in selfing generation as the basic for selecting the parent tree to assemble superior coconut hybrid and to determine the effect of pollination types (open-pollinated versus selfing) on the relationship among characters in the formed population. Observations were conducted on the open pollinated (MAT OP 32 and MAT OP 55) and self-pollination of MAT (MAT S3-32, MAT S4-32, MAT S3-55, and MAT S4-55). Path analysis was applied on characters of stem height, girth of 150 cm stem, number of leaf and number of bunches. Experimental result showed that there was no correlation either directly or indirectly among characters on MAT coconut OP-32, on the other hand MAT OP-55 number of bunches character had the largest direct influence on increasing production of fruit per bunch. Character of stem height in Coconut MAT S3-32 and S3-55 has the largest contribution to increase fruit production in both accession. Number of leaf character significant correlated directly with fruit per bunch production in MAT S4-32. There were three characters directly correlated with fruit per bunch production in MAT S4-55, namely stem height, stem girth of 150 cm and number of leaf. The third and fourth generation of MAT coconut show more closely relationships among characters than open-pollination of MAT populations, proven by the number of characters which had significant correlated as directly ever totally to produce more number of fruits.Keywords: Path analysis, open pollination, selfing, vegetative characters, generative characters.

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Analisis Heritabilitas dan Sidik Lintas Karakter Vegetatif dan Generatif

Buletin Palma ◽

10.21082/bp.v16n1.2015.93-103 ◽

2016 ◽

Vol 16 (1) ◽

pp. 93

Author(s):

. MIFTAHORRACHMAN ◽

EMY SULISTYOWATI

Keyword(s):

Path Analysis ◽

Block Design ◽

Leaf Length ◽

Path Coefficient ◽

Open Pollination ◽

Font Size ◽

Pollination System ◽

Controlled Pollination ◽

Self Pollination ◽

Female Flowers

ABSTRAK Keragaman komponen seleksi yang berpengaruh terhadap kecepatan berbunga dan produksi buah kelapa Genjah Salak belum banyak diketahui. Penelitian bertujuan mendapatkan metode penyerbukan dalam peningkatan produktivitas kelapa Genjah Salak dengan menghitung heritabilitas tiga belas karakter vegetatif dan generatif yang berkaitan langsung atau tidak langsung dengan produksi buah. Penelitian dilakukan di Kebun Percobaan Paniki, Manado, Sulawesi Utara, dari 2011 sampai 2014, menggunakan rancangan acak kelompok, tiga perlakuan dan empat ulangan. Perlakuan terdiri atas tiga sistem penyerbukan, yaitu penyerbukan sendiri (full sib), penyerbukan terkendali (half sib) dan penyerbukan alami (open pollination). Tiga belas karakter yang diukur adalah tinggi batang, lingkar batang, jumlah bekas daun, jumlah daun, panjang daun, panjang petiole, jumlah anak daun, panjang anak daun, jumlah tandan, jumlah spikelet, jumlah bunga betina, kecepatan berbunga, dan jumlah buah per tandan. Analisis heritabilitas menggunakan rumus Singh dan Chaudary. Analisis sidik lintas mengacu pada metoda matriks Singh dan Chaudary. Kelapa Genjah Salak dengan sistem penyerbukan sendiri memiliki waktu berbunga 34,74 bulan dan tinggi batang 51,75 cm, lebih baik dibandingkan dengan kelapa Genjah Salak yang menyerbuk terkendali (waktu berbunga 35,99 bulan; tinggi batang 52,51 cm) dan penyerbukan alami (waktu berbunga 36 bulan; tinggi batang 56,76 cm). Nilai heritabilitas pada kelapa Genjah Salak menyerbuk sendiri yang berkorelasi langsung dengan karakter hasil adalah tinggi batang (r = 0,383; h2 = 84,0%), jumlah bekas daun (r = 0,442; h2 = 63,0 %), dan jumlah bunga betina (r = 0,344; h2 = 75,0%). Metode terbaik untuk meningkatkan produk- tivitas kelapa Genjah Salak adalah dengan sistem penyerbukan sendiri karena memiliki nilai heritabilitas tinggi dan berkorelasi langsung dengan karakter hasil.Kata kunci: Heritabilitas, koefisien sidik lintas, sistim penyerbukan, kelapa Genjah Salak. Heritability and Path Analysis on Vegetative and Generative Characters of Salak Dwarf Coconut Generated from Three Pollination System ABSTRACT The diversity of Salak Dwarf components that can be used as a criterion of selection affecting the rate of flowering and yield have not been investigated. The research aims to obtain the best method of pollination in improvement of Salak dwarf coconut productivity by calculating the heritability of thirteen vegetative and generative characters. Twelve characters attributed to the production of fruits were investigated. The research was arranged in a randomized block design with three pollination system as the treatments, four replications, conducted at the Paniki Experimental Garden, North Sulawesi, from 2011 until 2014. Treatments consisted of self-pollination system (full sib), controlled pollination system (half sib) and open pollination system. Thirteen characters measured were stem height, girth of stem, number of leaf scars, number of leaves, leaf length, petiole length, number of leaflets, length of leaflet, number of bunches, number of spikelet, number of female flowers, day of flowering, and number of fruit per bunch. Analysis of heritability using the formula of Singh and Chaudary. Path coefficient analysis using matrix model by Shing and Chaudary. Salak dwarf coconut with self-pollination system has better effect of rate of flowering (34.74 month), and height of stem (51.75 cm) compared to the salak dwarf coconut with controlled pollination (rate of flowering 35.99 months; height of stem 52.51 cm) and Salak dwarf coconut with open pollination (rate flowering 36 months; height of stem 56.76 cm). To improve the productivity of Salak dwarf coconut, the best method of pollination is self-pollinated. Heritability value on self-pollinate of Salak dwarf coconut which correlates directly with the character of yield was the height of stem (r =0.383; h2=84.0%), the number of leafscars (r =0.442; h2=63.0%), and the number of female flowers (r =0344; h2=75.0%). The best method to increase the productivity of Salak dwarf coconut through self pollination since it has high heritability values and correlates directly with the character of yield.Keywords : Heritability, coefficient of path analysis, pollination systems, salak dwarf coconut.

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HUBUNGAN ANTARA KARAKTER VEGETATIF DE NGAN PRODUKSI PATI SAGU BARUQ

Jurnal Penelitian Tanaman Industri ◽

10.21082/jlittri.v20n4.2014.203-210 ◽

2020 ◽

Vol 20 (4) ◽

pp. 203

Author(s):

ELSJE T. TENDA ◽

. MIFTAHORRACHMAN

Keyword(s):

Path Analysis ◽

Indirect Effects ◽

Selection Criteria ◽

Crop Improvement ◽

High Yield ◽

Font Size ◽

North Sulawesi ◽

Number Of Leaves ◽

Vegetative Characters ◽

Starch Production

ABSTRAK Sagu baruq merupakan tanaman sumber karbohidrat yang diambil dari batang. Masalah yang dihadapi adalah seleksi produksi pati pada setiap pohon. Banyak atau sedikitnya produksi pati akan diketahui setelah pohon ditebang. Tujuan penelitian ini adalah untuk mendapatkan informasi genetik plasma nutfah sagu baruq, terutama untuk mengetahui korelasi antara karakter-karakter vegetatif dengan produksi pati, yang dapat dimanfaatkan untuk kegiatan seleksi tetua. Salah satu alat yang bisa digunakan untuk mendapatkan informasi ini adalah metode sidik lintas. Karakter yang diamati adalah tinggi batang, jumlah daun, panjang rachis, panjang dan lebar petiol, panjang, lebar, dan jumlah anak daun, serta berat batang, empulur, dan pati. Pengumpulan data dilakukan dengan mengacu pada metode Pusat Penelitian dan Pengembangan Perkebunan tahun 2005. Data yang terkumpul dianalisis koefisien korelasinya untuk mengetahui hubungan langsung dan tidak langsung karakter-karakter vegetatif dengan berat tepung sebagai komponen hasil. Perhitungan koefisien lintas mengacu pada metode matriks oleh Singh dan Chaudari. Hasil yang diperoleh menunjukkan terdapat enam karakter yang berpengaruh langsung terhadap berat tepung dan dapat dijadikan seleksi peningkatan produksi pati sagu baruq di Tabukan Tengah. Sementara itu, di Manganitu, terdapat sembilan karakter yang dapat dijadikan sebagai kriteria seleksi untuk perbaikan tanaman. Selain pengaruh langsung, dihasilkan juga 12 pengaruh tidak langsung yang dapat dipertimbangkan sebagai kriteria seleksi populasi sagu baruq di Tabukan Tengah dan 10 pengaruh tidak langsung untuk Manganitu.Kata kunci: Arenga macrocarpha, hubungan, karakter vegetatif, produksi pati Relationship Between Vegetative Characters an d SagoBaruq Starch Production From Sangihe District ABSTRACT Baruq sagu is an important source of carbohydrate from the stem, constrain in cultivation was difficulty in selecting high yield plants. The experiment was conducted at the District Tabukan Tengah and Manganitu Sangihe Regency, North Sulawesi in May 2012. The purpose of this study was to obtain genetic information for germplasm of sago Baruq, especially to determine the correlation between vegetative characters and the production of starch, which later can be used as the selection of mother palms. One of the tools that can be used to obtain this information was the method of path analysis. Research methods used was direct observation in the field. The number of plants observed for each site 1 0 trees, which were randomly selected. Characters observed were plant height, number of leaves, rachis length, length of petiol, petiol width, length of the leaf, width of leaf, number of leaves, stems weight, pith weight, and weight of starch. The collected data were analyzed to determine the direct and indirect relationship between vegetative characters and weight of starch using path analysis. The result showed that 10 vegetative characters of Baruq sago population in Tabukan Tengah District, Sangihe regency produced six characters directly influence the character of the starch weight and can be used as selection criteria to increasing production of baruq sago starch. Meanwhile, in District Manganitu 9 characters can be used as selection criteria for crop improvement. In addition to the direct effects, 12 indirect effects can be considered as a selection criteria for sago baruq population in District Tabukan Tengah and 10 indirect effects for the population baruq sago in the District Manganitu. Keywords: Arenga macrocarpha , relationships, vegetative character, starch production

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Breeding System and Pollination Levels of Banksia ericifolia

Australian Journal of Botany ◽

10.1071/bt9910365 ◽

1991 ◽

Vol 39 (4) ◽

pp. 365 ◽

Cited By ~ 9

Author(s):

RL Goldingay ◽

SM Schibeci ◽

BA Walker

Keyword(s):

Breeding System ◽

Pollen Tubes ◽

Fruit Production ◽

The Self ◽

Open Pollination ◽

Flower Number ◽

Cross Pollination ◽

Self Pollination ◽

Full Complement ◽

Banksia Ericifolia

Experiments were carefully designed to determine the breeding system of Banksia ericifolia L.f. An equivalent percentage of flowers (78%) contained pollen tubes following self-pollination and open-pollination while a significantly smaller percentage of flowers in an autogamy treatment (44%) and cross-pollination treatment (55%) contained pollen tubes. Significantly more of the inflorescences in the open-pollination (60%) and cross-pollination (33%) treatments produced fruit compared with those in the self-pollination (11%) and autogamy treatments (13%). We suggest that B. ericifolia is largely self-incompatible because fruit production did not reflect pollen tube abundances. The influence of pollination levels on fruit production was determined by reducing the number of flowers on an inflorescence to 100 (i.e. 10% of original) or fewer and hand-pollinating these with cross pollen. There was no difference in fruit production between inflorescences with reduced flower number and open-pollinated inflorescences which had their full complement of flowers. Thus, the ability of an inflorescence to produce fruit appears more likely to be determined by the type of pollen received (cross versus self) rather than by the number of pollinated flowers it contains.

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Pengaruh Teknik Penyerbukan Terhadap Pembentukan Buah Naga (Hylocereus polyrizhus) [The Effect of Pollination Technique to Fruit Development of Dragon Fruit (Hylocereus polyrizhus)]

Jurnal Hortikultura ◽

10.21082/jhort.v28n2.2018.p183-190 ◽

2019 ◽

Vol 28 (2) ◽

pp. 183

Author(s):

Ni Luh Putu Indriyani ◽

NFN Hardiyanto

Keyword(s):

Fruit Set ◽

The Other ◽

Open Pollination ◽

Tropical Fruit ◽

Flower Pollination ◽

Cross Pollination ◽

Self Pollination ◽

Dragon Fruit ◽

Pollination Control ◽

Fruit Plants

Bunga tanaman buah naga berukuran besar dan merupakan bunga hermaprodit yang mekar pada malam hari. Penyerbukan silang pada buah naga dapat terjadi dengan bantuan angin, serangga polinator maupun manusia. Penelitian bertujuan untuk mengetahui pengaruh teknik penyerbukan bunga betina terhadap pembuahan buah naga (Hylocereus polyrizhus). Penelitian dilakukan di Kebun Percobaan Aripan, Balai Penelitian Tanaman Tropika pada bulan Agustus sampai September 2014. Perlakuan terdiri atas: (A) penyerbukan secara alami (kontrol), (B) penyerbukan sendiri melalui isolasi bunga dengan kantong kertas minyak, (C) penyerbukan dengan mengisolasi bunga menggunakan kantong kertas minyak saat mekar pada malam hari dibantu dengan memberikan serbuk sari dari bunganya sendiri dan diisolasi kembali, dan (D) penyerbukan bunga yang didahului dengan kastrasi dan isolasi menggunakan kantong kertas minyak serta polinasi pada malam hari dan selanjutnya bunga diisolasi kembali. Setiap perlakuan terdiri atas 37 bunga tanaman buah naga. Analisis data dilakukan menggunakan uji t berpasangan pada taraf 0,05. Hasil penelitian menunjukkan bahwa teknik penyerbukan yang berbeda pada tanaman buah naga menghasilkan kelas buah yang berbeda. Persentase buah dengan kelas super tertinggi diperoleh pada penyerbukan secara alami (kontrol), meskipun persentase jadi buah paling kecil. Implikasi dari hasil penelitian ini adalah bahwa penyerbukan pada buah naga sebaiknya dilakukan secara alami tanpa menggunakan bantuan manusia.KeywordsBuah naga; Penyerbukan; Pembuahan; Self compatibleAbstractThe flower size of dragon fruit plants is large and a hermaphroditic nocturnal flowers. Cross pollination of the dragon fruit plants occurs because of the wind, pollinator, and humans. The aim of the research was to determine the effect of pollination technique on fertilization of dragon fruit flowers (Hylocereus polyrizhus). This research was conducted at Aripan Experimental Field, Indonesian Tropical Fruit Research Institute (ITFRI) from August to September 2014. The treatments consisted of: (A) natural open pollination (control), (B) the flowers were isolated with paper bags and allowed to self pollination, (C) the flowers were isolated with paper bag and hand self pollinated when flowers were blooming in the evening. Furthermore all pollinated flowers were isolated with paper bag again (hand self pollination), and (D) the flowers were castrated and emasculated then they were isolated with paper bag. Cross pollination was done with pollen from the other plants. The all pollinated flowers were isolated with paper bag again (hand cross pollination). Each treatment consisted of 37 flowers of dragon fruit plants. Data were analyzed by using paired t test 0.05. The results showed that different of pollination techniques on dragon fruit plants were produced of different fruit grade. Percentage of superior grade on natural open pollination higher than the other treatment, even though the open pollination had smallest of percentage of fruit set. The implication of this research is that the dragon fruit flower pollination may be done naturally without human assistance.

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Mating system and female reproductive success of the endemic and endangered epiphyte Rhynchostele cervantesii (Orchidaceae) in a cloud forest in Michoacan, Mexico

Plant Ecology and Evolution ◽

10.5091/plecevo.2021.1551 ◽

2021 ◽

Vol 154 (1) ◽

pp. 56-62

Author(s):

Rosa E. Magaña Lemus ◽

Irene Ávila-Díaz ◽

Yvonne Herrerías Diego

Keyword(s):

Reproductive Success ◽

Mating System ◽

Cloud Forest ◽

Fruit Production ◽

Open Pollination ◽

Female Reproductive Success ◽

Epiphytic Orchid ◽

Cross Pollination ◽

Self Pollination ◽

Natural Pollination

Background and aims – The Orchidaceae family is vulnerable, because of the destruction of their habitat, as well as the extraction of individuals from natural populations. This is the case of the genus Rhynchostele Rchb.f.; among the actions considered important for appropriate conservation strategies for this genus is the generation of fundamental knowledge, such as on its reproductive biology. The objective of this work is to understand the mating system and reproductive success of Rhynchostele cervantesii, an endangered epiphytic orchid endemic to Mexico.Material and methods – Manual and open-pollination treatments were conducted during 2014 and 2015 in a cloud forest in Michoacan, Mexico. In each period, 30 to 40 randomly selected inflorescences were subjected to the following treatments: a) spontaneous-self-pollination, b) emasculation, c) self-pollination, d) cross-pollination, and e) open-pollination. The developed fruits were counted and harvested, the viability of the seeds was determined, through the observation and evaluation of embryos using microscopy.Key results – Significant differences were recorded between the treatments in both 2014 and 2015, with higher fruit production in cross-pollination than in self-pollination and natural-pollination. There were significant differences in seed viability, with higher values for seeds from open-pollination and cross-pollination and lower values for seeds from self-pollination.Conclusions – Rhynchostele cervantesii is a species that requires pollinators for sexual reproduction because there is no fruit production with spontaneous-self-pollination. Under pollen limitation, the fruit set of natural pollination was a lot lower than in cross-pollination although fruits were the same quality. R. cervantesii had a mixed mating system with a tendency to exogamy, presenting high values of female reproductive success compared to other tropical epiphytic orchid species reported in the literature.

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Self-fertility studies of some sweet cherry (Prunus avium L.) cultivars and selections

International Journal of Horticultural Science ◽

10.31421/ijhs/10/4/504 ◽

2004 ◽

Vol 10 (4) ◽

Cited By ~ 2

Author(s):

Zs. Békefi

Keyword(s):

Significant Relationship ◽

Sweet Cherry ◽

Prunus Avium ◽

Fruit Set ◽

The Other ◽

Open Pollination ◽

Pollen Transfer ◽

Self Pollination ◽

Sweet Cherry Cultivars ◽

Prunus Avium L

Fruit set of two sweet cherry cultivars (Alex' and 'Stella' ) and four Hungarian selections have been studied over two years following open pollination, unassisted self-pollination (autogamy) and artificial self-pollination (geitonogamy). Among accessions 'IV-6/240' proved to be self-sterile, while the other five revealed to be self-fertile. Significant differences have been found in fruit set among years and among pollination treatments but not among self-fertile accessions. Fruit set following unassisted self-pollination was significantly lower than of other pollination treatments. Thus pollen transfer is essential for profitable yield in sweet cherry growing. There was no significant relationship in the fruit set of open- and self-pollination.

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Status of Family Fissidentaceae in Gujarat

Cryptogam Biodiversity and Assessment ◽

10.21756/cba.v1i1.11022 ◽

2016 ◽

Vol 1 (1) ◽

Author(s):

D.G. Shah ◽

D.N. Mehta ◽

R.V. Gujar

Keyword(s):

Distinct Species ◽

The State ◽

The Other ◽

Land Plants ◽

Reproductive Structures ◽

The Family ◽

The Status ◽

Vegetative Characters ◽

First Time ◽

Different Parts

Bryophytes are the second largest group of land plants and are also known as the amphibians of the plant kingdom. 67 species of bryophytes have been reported from select locations across the state of Gujrat. The status of family fissidentaceae which is a large moss family is being presented in this paper. Globally the family consists of 10 genera but only one genus, Fissidens Hedw. has been collected from Gujarat. Fissidens is characterized by a unique leaf structure and shows the presence of three distinct lamina, the dorsal, the ventral and the vaginant lamina. A total of 8 species of Fissidens have been reported from the state based on vegetative characters as no sporophyte stages were collected earlier. Species reported from the neighboring states also showed the absence of sporophytes. The identification of different species was difficult due to substantial overlap in vegetative characters. Hence a detailed study on the diversity of members of Fissidentaceae in Gujarat was carried out between November 2013 and February 2015. In present study 8 distinct species of Fissidens have been collected from different parts of the state. Three species Fissidens splachnobryoides Broth., Fissidens zollingerii Mont. and Fissidens curvato-involutus Dixon. have been identified while the other five are still to be identified. Fissidens zollingerii Mont. and Fissidens xiphoides M. Fleisch., which have been reported as distinct species are actually synonyms according to TROPICOS database. The presence of sexual reproductive structures and sporophytes for several Fissidens species are also being reported for the first time from the state.

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Penentuan Karakter Tanaman Yang Berpengaruh Terhadap Hasil Kemiri [Aleurites moluccana (L.) Willd.]

Jurnal Tanaman Industri dan Penyegar ◽

10.21082/jtidp.v6n3.2019.p127-134 ◽

2019 ◽

Vol 6 (3) ◽

pp. 127

Author(s):

Cici Tresniawati ◽

Nur Kholilatul Izzah ◽

Ilham Nur Ardhi Wicaksono ◽

Indah Sulistyorini ◽

Edi Wardiana

Keyword(s):

Yield Components ◽

Seed Weight ◽

Structural Equation ◽

Equation Modeling ◽

Stem Height ◽

Petiole Length ◽

Plant Materials ◽

Leaf Petiole ◽

Vegetative Characters ◽

Aleurites Moluccana

Candlenut [Aleurites moluccana (L.) Willd.] is a perrenial plant that has high economic value. Information about vegetative and generative characters, as well as yield components that influence the yield is needed in the early stages of selection process in plant breeding. Selection of these characters can be done using Sequential Path Analysis (SPA) according to the plant development cycle, and then confirm the model using the Structural equation modeling (SEM) method. The aim of this study was to determine the vegetative characters and yield components that influence the candlenut production. The research was carried out at Pakuwon Experimental Station, Indonesian Industrial and Beverage Crops Research Institute, Sukabumi, from January to December 2018. Plant materials used in this study was 129 candlenut trees at 9 years old which were planted with a spacing of 10m x 10m. The data were analyzed using SPA followed by model confirmation using SEM method. The results showed that the production of seed was directly and positively influenced by the leaf petiole length, number of productive branches, seed weight, and number of fruits per tree, while the effect of stem height character is indirectly. Based on these results, plant selection based on vegetative characters such as leaf petiole length, number of productive branches, stem height character, number of fruits per tree and seed weight can be used to obtain high-yielding candlenut plants.

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Cultivating Students’ STEAM Competence in STEAM Education: Constructing Models and Developing Measurement Scale in Chinese primary school

10.31124/advance.13502217.v1 ◽

2021 ◽

Author(s):

shan chen

Keyword(s):

Factor Analysis ◽

Correlation Analysis ◽

Path Analysis ◽

Situated Learning ◽

Measurement Model ◽

Measurement Scale ◽

Font Size ◽

Analytic Hierarchy ◽

Steam Education ◽

Hierarchy Model

To improve the quality of STEAM education and cultivate STEAM competence, the purpose of this research was designed to examine the students’ experiences in cultivating STEAM competence, which was focused on students’ engaging experience in STEAM education. Through several investigation and questionnaires to achieve this purpose, to construct an analytic hierarchy model and measurement model by employing the analytic hierarchy process and confirmatory factor analysis in R 3.3.3 and Mplus8.3. Besides, correlation analysis, exploratory factor analysis (EFA), and path analysis were also employed. The participants are the researchers, educators, and administrators (Total= 856), as well as the 4th grade to 6th grade students (N=1126). Summarizing the main results: (1) the dimension of students’ STEAM competence (SSC) was established through the analytic hierarchy model, which was practical cognition, interpersonal interaction, and comprehensive influence point to the individual, society, and living world. (2) the criteria and sub-criteria of SSC were modified, corrected, and determined through the analytic hierarchy model and measurement model to construct the SSC scale (SSCs), which was psychological cognition, situated learning, practical inquiry, social communication, rational decision making, creative presentation, and impact assessment. (3) the relationships between each criterion were examined through correlation analysis and path analysis. Finally, the conclusion, significance, limitations, and future work were also discussed to promote the development of students’ STEAM competence.@font-face{ font-family:"Times New Roman"; }@font-face{ font-family:"宋体"; }@font-face{ font-family:"DengXian"; }@font-face{ font-family:"DejaVu Sans"; }p.MsoNormal{ mso-style-name:正文; mso-style-parent:""; margin:0pt; margin-bottom:.0001pt; text-indent:10.0000pt; mso-char-indent-count:2.0000; padding:0pt 0pt 0pt 0pt ; mso-layout-grid-align:none; layout-grid-mode:char; mso-pagination:none; font-family:'Times New Roman'; mso-fareast-font-family:宋体; color:rgb(0,0,0); font-size:12.0000pt; mso-font-kerning:10.5000pt; }p.MsoHeader{ mso-style-name:页眉; margin:0pt; margin-bottom:.0001pt; text-indent:10.0000pt; mso-char-indent-count:2.0000; border-top:none; mso-border-top-alt:none; border-right:none; mso-border-right-alt:none; border-bottom:none; mso-border-bottom-alt:none; border-left:none; mso-border-left-alt:none; padding:1pt 4pt 1pt 4pt ; mso-layout-grid-align:none; layout-grid-mode:char; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; font-family:'DejaVu Sans'; mso-fareast-font-family:宋体; mso-bidi-font-family:'Times New Roman'; color:rgb(0,0,0); font-size:9.0000pt; mso-font-kerning:10.5000pt; }span.msoIns{ mso-style-type:export-only; mso-style-name:""; text-decoration:underline; text-underline:single; color:blue; }span.msoDel{ mso-style-type:export-only; mso-style-name:""; text-decoration:line-through; color:red; }div.Section0{page:Section0;}

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Influence of vineyard peach selections on vigour and initial yield in peach and nectarine

Genetika ◽

10.2298/gensr1301011z ◽

2013 ◽

Vol 45 (1) ◽

pp. 11-20 ◽

Cited By ~ 4

Author(s):

Gordan Zec ◽

Milica Fotiric-Aksic ◽

Slavica Colic ◽

Todor Vulic ◽

Dragan Nikolic ◽

...

Keyword(s):

Principal Component Analysis ◽

Analysis Of Variance ◽

Geographic Origin ◽

Principal Component ◽

Fruit Trees ◽

Fruit Production ◽

Fruit Weight ◽

Open Pollination ◽

Fruit Productivity ◽

F1 Generation

Seedlings (progenies) of eight selected vineyard peach genotypes obtained by self and open pollination were examined in this study during three consecutive years. Two progenies from unselected vineyard peach genotypes with different geographic origin were used as a standard. Peach cv. Autumn Glo and nectarine cv. Stark Red Gold were grafted on F1 generation of eight vineyard peach selections and two standard progenies. Analysis of variance indicated statistically significant differences in vigour and fruit productivity between fruit trees grafted on different progenies of vineyard peach selections. A high correlation was found between rootstock vigour and fruit production of grafted cultivars. In addition, the principal component analysis made it possible to establish similar groups of rootstocks, depending on its influence to vigour, productivity and indexes of efficiency of grafted peach and nectarine cultivar. The most promising rootstocks for those two cultivars were PSK and 7S because grafted AG and SRG have high fruit weight, initial yields and very satisfactory rootstock, scion and canopy efficiency.

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