scholarly journals Segregation pattern and inbreeding depression in F2 generation of some hybrid okra varieties

2015 ◽  
Vol 1 (2) ◽  
pp. 316-335
Author(s):  
Sonia Akter Laboni ◽  
SM Ahsan ◽  
Shepon Chandra Ghosh ◽  
Eftekhar Mahmud ◽  
Mostafizur Rahman Talukder ◽  
...  
Keyword(s):  
Inbreeding Depression ◽  
Block Design ◽  
Leaf Shape ◽  
Breeding Strategy ◽  
Broad Sense ◽  
Segregation Pattern ◽  
Research Station ◽  
Broad Sense Heritability ◽  
Agriculture Research Institute ◽  
F2 Generation

An experiment was conducted in randomized complete block design (RCBD) with three replications in the experimental field of Regional Horticulture Research Station (RHRS), Bangladesh Agriculture Research Institute (BARI), Lebukhali, Patuakhali during April, 2014 to October, 2014 for assessing the inbreeding depression, genetic parameters, gene action and segregation pattern of Okra [Abelmoschusesculentus (L.) Moench]. The experiment was comprised of five commercial hybrid Okra genotypes such as Tara sonali, Bimala, Juboraj, Suvo 1and Noor, their respective F2 progenies along with a check variety named as BARI Dherosh 1. Results of the experiment indicated that there were considerable variability among the F1 and their F2. The yield were in-between 14.81 to 7.92 Kg plot-1in case of F1 generation, which deteriorate to 10.32 to 5.32 Kg plot-1 in F2 generation. Broad sense heritability computed through variance component method showed that all the quantitative traits were moderate to highly heritable. The trait yield per plot exhibited 68.83% broad sense heritability coupled with 50.96% genetic advance suggesting the existence of sufficient amount of genetic variability for improvement of this trait and also indicates that the trait is more amenable to selection and could be improved easily. In case of segregation pattern, plant height and pod pubescence content exhibit as polygenic trait. Leaf shape, fruit base shape and branching pattern showed complete dominance and fruit color displayed incomplete dominance. The present investigation thus provide information about the nature and magnitude of genetic variation, segregation pattern and inbreeding depression for yield and its components in okra so as to formulate suitable breeding strategy and isolate potential parents and promising crosses for further breeding program.Asian J. Med. Biol. Res. June 2015, 1(2): 316-335

scholarly journals Inheritance of Fruit, Foliar, and Plant Habit Attributes in Capsicum

2008 ◽  
Vol 133 (3) ◽  
pp. 396-407 ◽  
Author(s):  
John R. Stommel ◽  
Robert J. Griesbach
Keyword(s):  
Plant Height ◽  
Leaf Shape ◽  
Leaf Length ◽  
Fruit Color ◽  
Broad Sense ◽  
Leaf Width ◽  
Broad Sense Heritability ◽  
Narrow Sense ◽  
Narrow Sense Heritability ◽  
Plant Habit

Considerable diversity exists in Capsicum L. germplasm for fruit and leaf shape, size, and color as well as plant habit. Using F1, F2, and backcross generations developed from diverse parental stocks, this report describes the inheritance patterns and relationships between unique foliar characters and diverse fruit and plant habit attributes. Our results demonstrate that pepper fruit color, shape, and fruit per cluster were simply inherited with modifying gene action. Broad-sense heritability for fruit color and shape and fruit per cluster was high, whereas narrow-sense heritability for these characters was moderate to low. Although fruit clustering was simply inherited, the number of fruit per cluster exhibited a quantitative mode of inheritance. High fruit counts per cluster were linked with red fruit color and anthocyanin pigmented foliage. Fruit shape was linked with immature fruit color and inherited independently of mature fruit color. Leaf color, length, and plant height were quantitatively inherited. Leaf shape did not vary, but leaf length varied and was positively correlated with leaf width. Broad-sense heritability for leaf characters, including leaf length, leaf width, and leaf color, was high. With the exception of leaf width, which exhibited low narrow-sense heritability, high narrow-sense heritability for leaf characters denoted additive gene action. Plant height displayed high broad-sense heritability. Moderate narrow-sense heritability suggested that additive effects also influence plant height. Analysis of segregating populations demonstrated that red and orange fruit color can be combined with all possible leaf colors from green to black. These results provide new data to clarify and extend available information on the inheritance of Capsicum fruit attributes and provide new information on the genetic control of leaf characters and plant habit.

scholarly journals Screening of Wheat Genotypes for Morphological, Physiological and Phenological Traits Under Climatic Condition

2021 ◽  
Vol 2 (2) ◽  
pp. 87-91
Author(s):  
A. L. Siyal ◽  
A. G. Chang ◽  
N. Shaikh ◽  
J. K. Sootaher ◽  
T. Jatt ◽  
...  
Keyword(s):  
Climate Change ◽  
Block Design ◽  
Winter Season ◽  
Positive Association ◽  
Moisture Stress ◽  
Field Trials ◽  
Research Station ◽  
Key Factor ◽  
Negative Effect ◽  
Agriculture Research Institute

Climate change is a major threat to most of crops grown globally in sub-tropics and tropics. One of the consequences of climate change is drought, which has a negative effect on crop growth and productivity. However, present research drought affected breed wheat was tested to examine the quality of wheat selection for different stage using morphological and phenological traits. Ten genotypes along with two local check varieties were tested in randomize complete block design were used for this experiment. The experiment was conducted in the field of Southern Wheat Research Station, Agriculture Research Institute, Tandojam, in winter season to determine the different levels of tillers per plant, growth vigor, early growth habit, plant type, Leaf type, content of proline in (μ mol. g-1 fresh wt), osmotic potential in (-Mpa) and relative water content in (%) analyzed for significance. The genotypes showed positive significantly differ in response to studied traits. Ten genotypes were sown in three replications, in two blocks. The genotypes were significantly different in response to the moisture stress. There were highly significant differences for all traits. The positive association for studied the parameters between the field trials demonstrated that greater seedling vigor of root and shoot is key factor influencing in wheat. Therefore, our finding suggested that these genotypes had potential to grow well and perform better than other genotypes and check varieties.

Performance, heterosis and heritability in selected tropical maize single, double and three-way cross hybrids

2002 ◽  
Vol 138 (1) ◽  
pp. 21-28 ◽  
Author(s):  
G. B. SALEH ◽  
D. ABDULLAH ◽  
A. R. ANUAR
Keyword(s):  
Grain Yield ◽  
Agronomic Traits ◽  
Block Design ◽  
Grain Weight ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Tropical Maize ◽  
Randomized Complete Block Design ◽  
Parental Inbred ◽  
Ear Number

A series of tropical maize hybrids, involving 10 single, four double and four three-way crosses were evaluated with their parental inbred lines and three control varieties, at Universiti Putra Malaysia, Serdang, Malaysia, in a randomized complete block design, with three replications. The objectives were to identify hybrids superior for yield, yield components and other agronomic traits, to estimate heterosis revealed by the hybrids, and to estimate broad-sense heritability for important characters in the populations. The hybrids were found to vary highly for grain yield and most other traits measured. High estimates of heterosis were shown by grain yield, ear weight and grain weight per ear, moderate for plant and ear heights, shelling percentage, ear diameter, number of kernel rows per ear, number of kernels per ear row and 100-grain weight. The hybrids flowered and matured earlier than their respective inbred parents. Estimates of broad-sense heritability also varied with characters. Moderate heritability was shown for grain yield indicating a substantial amount of genetic variation in this population of hybrids. Low and negligible heritability for days to silking and 100-grain weight indicate that these traits were very much influenced by environmental factors. Based on the overall performance of the hybrids, the single cross, SC-2, the double cross, DC-11 and the three-way cross, TWC-15, were found to have high potential. No obvious differences were observed in performance among the three categories of hybrids, the single, double and three-way crosses.

scholarly journals High Heritability in a Resistant Barley Genetic Source to Spot Blotch (Cochliobolus sativus)

2015 ◽  
Vol 58 (2) ◽  
pp. 111-113
Author(s):  
Mohammad Imad Eddin Arabi ◽  
Antonious Al-Daoude ◽  
Amina Shoaib ◽  
Mohammad Jawhar
Keyword(s):  
Analysis Of Variance ◽  
Spot Blotch ◽  
Broad Sense ◽  
Segregation Pattern ◽  
Resistant Cultivar ◽  
Cochliobolus Sativus ◽  
Broad Sense Heritability ◽  
High Heritability ◽  
Genetic Source

The objective of the present research was to assess and understand the heritability of the resistant barley genetic source cv. Banteng to spot blotch SB disease caused by Cochliobolus sativus. A cross was made between this resistant cultivar and the universally susceptible cv. WI 2291. Analysis of variance for the studied trait indicated highly significant differences among cultivars. High broad sense heritability was found (H ˜˜ 88 %). However, in all cases, the results obtained for the F2 plants demonstrated that the observed segregation pattern fitted 1:15 ratios.

scholarly journals Keragaman genetik, fenotip dan heritabilitas beberapa genotip sorghum pada kondisi tumpangsari dan monokultur

Jurnal Agro ◽  
10.15575/4568 ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 95-109
Author(s):  
Kukuh Setiawan ◽  
Rafika Restiningtias ◽  
Setyo Dwi Utomo ◽  
Ardian Ardian ◽  
M S Hadi ◽  
...  
Keyword(s):  
Selection Criteria ◽  
Block Design ◽  
High Volume ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Randomized Block Design ◽  
Need To Evaluate ◽  
High Heritability ◽  
Sorghum Genotypes ◽  
Brix Value

Selain sebagai bahan pangan dan pakan, sorgum berpotensi menghasilkan nira untuk bioethanol. Beragamnya potensi hasil nira, mendorong perlunya evaluasi keragaan berbagai genotip sorgum untuk digunakan sebagai kriteria seleksi. Penelitian ini bertujuan untuk mengevaluasi produksi nira, membandingkan keragaman genetik dan fenotip pada beberapa genotip sorgum, serta menghitung heritabilitas arti luas. Penelitian dilaksanakan di Desa Sukanegara, Kecamatan Tanjung Bintang, Kabupaten Lampung Selatan dari April 2017 sampai Februari 2018.  Rancangan perlakuan disusun secara strip plot dalam Rancangan Acak Kelompok Lengkap dengan tiga ulangan yang digunakan sebagai kelompok.  Kondisi tumpangsari dan monokultur yang digunakan sebagai pembanding disusun secara strip plot. Sebanyak 15 genotip digunakan, yaitu GH 3, GH 4, GH 5, GH 6, GH 7, GH 13, Super 1, Super 2, Samurai 1, UPCA, Numbu, Mandau, Talaga Bodas, P/IWHP, dan P/F 5-193-C. Hasil penelitian menunjukkan bahwa genotip Talaga Bodas mempunyai kandungan nira yang cukup tinggi baik pada kondisi tumpangsari maupun monokultur yang masing-masing sebesar 144,0 ml dan 166,0 ml.  Sementara genotip Super 1 menunjukkan kandungan nira paling tinggi pada kondisi tumpangsari (163,0 ml) dan genotip GH13 menghasilkan volume nira paling tinggi pada sistem monokultur (183,0 ml). Nilai heritabilitas arti luas pada tinggi tanaman, nilai brix, kandungan nira, dan jumlah ruas pada sistem tanam tumpangsari dan monokultur termasuk dalam kriteria tinggi (0,6-0,9). Nilai heritabilitas yang tinggi pada karakter tersebut menunjukkan bahwa faktor genetik lebih berpengaruh sehingga bisa digunakan sebagai kriteria seleksi.ABSTRACT In addition to foodstuffs and feed, sorghum potentially produces “nira” for bioethanol. The varying potency of the nira results, prompting the need to evaluate the performance of various sorghum genotypes for use as selection criteria. The objectives of this study were to evaluate nira production, to compare genetics and phenotype variances of sorghum genotypes, also to calculate broad sense heritability of some sorghum genotypes.  This study was conducted at Desa Sukanegara, Kecamatan Tanjung Bintang, Kabupaten Lampung Selatan from April 2017 to February 2018.  The experiment was designed by stripe plot in completely randomized block design with three replications used as block. The conditions of monoculture and intercropping used as comparison were arranged in stripe plot.  As many as 15 genotypes used in this study i.e. GH 3, GH 4, GH 5, GH 6, GH 7, GH 13, Super 1, Super 2, Samurai 1, UPCA, Numbu, Mandau, Talaga Bodas, P/IWHP, and P/F 5-193-C. The result showed that Talaga Bodas genotype had high volume of nira content under monoculture and intercropping conditions as 144.0 ml and 166.0 ml, respectively. However, Super 1 genotype had high nira content (163.0 ml) under intercropping condition and GH13 genotype had high nira content under monoculture (183.0 ml). Broad sense heritability of plant height, brix value, nira content, and internode number in both intercropping and monoculture conditions was high (0.60 – 0.90).  These high heritability values mean that these characters are influenced by genetics factor and could be used as selection criteria.

scholarly journals Karakter Agronomi Galur Padi Dihaploid Asal Kultur Antera Hasil Persilangan Three Way Cross

2018 ◽  
Vol 46 (1) ◽  
pp. 9
Author(s):  
Mohammad Syafii ◽  
Bambang Sapta Purwoko ◽  
Iswari Saraswati Dewi ◽  
Dan Willy Bayuardi Suwarno
Keyword(s):  
Genetic Variability ◽  
Anther Culture ◽  
Doubled Haploid ◽  
Block Design ◽  
Broad Sense ◽  
Yield Potential ◽  
Broad Sense Heritability ◽  
High Genetic Variability ◽  
Doubled Haploid Lines ◽  
Agronomic Character

<p><em></em><em>Anther culture is useful tool in rice breeding. The technique shortens the time to obtain full homozygous plant in just one generation. Information related to genetic variability among the regenerants is important for further analysis including selection activities. The objective of this study was to analyze agronomic character variability and yield potential among doubled-haploid lines (DH0) derived from anther culture. This study was carried out in Center for Agricultural Biotechnology and Genetic Resources Research and Development (BB Biogen) from October 2016 to February 2017. The experiment was arranged in randomized complete block design (RCBD) with three replications. Forty eight doubled haploid lines derived from anther culture and three check varieties were evaluated. The results showed high genetic variability as well as broad sense heritability (more than 90%) for all variables tested. Several lines showed superior agronomic characters compared to check (Ciherang, Inpari 18, Inpago 10). Anther culture could generate high genetic variability for further selection.<br /><br />Keywords: anther culture, broad sense heritability, haploid technology</em></p>

scholarly journals Broad-sense Heritability Estimates of Turfgrass Performance Characteristics in Native Prairie Junegrass Germplasm

HortScience ◽  
2012 ◽  
Vol 47 (9) ◽  
pp. 1228-1233 ◽  
Author(s):  
Matthew D. Clark ◽  
Eric Watkins
Keyword(s):  
Block Design ◽  
Performance Characteristics ◽  
Broad Sense ◽  
Lateral Spread ◽  
Broad Sense Heritability ◽  
Native Prairie ◽  
Crown Density ◽  
Koeleria Macrantha ◽  
Heritability Estimates ◽  
Positive Correlations

Prairie junegrass [Koeleria macrantha (Ledeb.) Shultes] is a perennial, short-grass prairie species distributed throughout the Northern Hemisphere that is being evaluated for use as a low-input turf. In June 2007, 300 genotypes representing collection locations derived from Colorado, Nebraska, and Minnesota germplasm were grown and evaluated 3 years for turfgrass performance characteristics in a randomized complete block design with five clonal replications at two locations (St. Paul, MN, and Becker, MN). After establishment, plots received no supplemental irrigation or fertility and were mowed weekly to a height of 6.4 cm. Broad-sense heritability estimates were calculated on a clonal mean (Hc) and single-plant (Hsp) basis for turf quality (Hc = 0.62, Hsp = 0.13), crown density (Hc = 0.55, Hsp = 0.09), mowing quality (Hc = 0.59, Hsp = 0.09), and genetic color (Hc = 0.45, Hsp = 0.06). The heritability estimates indicate that selection for these traits should result in significant gains in germplasm improvement. Differences were observed in the means and variances among clones, collection locations, and/or collection regions for many of the traits evaluated including rust severity (Puccinia spp.), spring green-up, plant height, lateral spread, vertical regrowth, and flowering traits. The positive correlations among some of these traits and those with moderate heritability estimates should allow for multi-trait selection in cultivar development.

A Note On Broad-Sense Heritability of Selected Sensory Descriptors in Virginia-Type Arachis Hypogaea L.1

1993 ◽  
Vol 20 (1) ◽  
pp. 24-26 ◽  
Author(s):  
Harold E. Pattee ◽  
Francis G. Giesbrecht ◽  
R. Walton Mozingo
Keyword(s):  
Block Design ◽  
Statistical Significance ◽  
Suppressive Effect ◽  
Sensory Attributes ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Roasted Peanut ◽  
Incomplete Block Design ◽  
Arachis Hypogaea L ◽  
Accepted Standard

Abstract Improvement of flavor quality is a breeding objective that merits increased attention. To obtain further information on broad-sense heritability of selected sensory attributes, 30 virginia-type genotypes sources were grown in replicated experiments at two locations during 1988 for evaluation. Roasted peanut paste samples were evaluated for 14 sensory attributes. Fruity attribute was confirmed as having a significant suppressive effect on roasted peanut attribute. Session-to-session variation was significant and use of an incomplete block design provided for control of panel variation in the experimental error. Broad-sense heritability estimates for roasted peanut, sweet, and nutty sensory attributes were higher than previously reported, 0.31 vs. 0.24; 0.68 vs. 0.14; 0.37 vs. 0.05, respectively. Nine genotypes were found to have statistically significant higher roasted peanut intensity than the industry accepted standard Florigiant. Further calculations showed that experiments with two replications at each of four locations should have an 80% chance of detecting statistical significance for roasted peanut attribute differences of 0.5 units among genotypes when testing at the 5% level. A similar experiment with two replications at two locations should have a 40% chance of detecting statistical significance.

scholarly journals Evaluation of Dolichos Genotypes (Dolichos lab lab L.) under Northern Telangana Zone

2020 ◽  
Vol 11 (6) ◽  
pp. 501-507
Author(s):  
Preetham R. ◽  
◽  
Suchitra V. ◽  
Saidaiah P. ◽  
Nithish A. ◽  
...  
Keyword(s):  
Block Design ◽  
Leaf Shape ◽  
Research Station ◽  
Yield Attributes ◽  
Petal Colour ◽  
Pod Yield ◽  
Randomized Block Design ◽  
Dark Green ◽  
Floral Characters ◽  
Pod Length

A field trial was conducted at Horticultural Research Station, Adilabad of Northern Telangana Zone in Telangana State, India for two consecutive years of 2018 and 2019 with forty five genotypes of dolichos bean. The study was initiated to study the vegetative, floral characters and yield performance of different genotypes. The experiment was laid by adopting Randomized block design with two replications each in 2018 and 2019. Significant variations were noticed in the vegetative, floral characteristics; yield attributes and yields among the different genotypes. Stem pigmentation varied from meager or no pigmentation in 33 genotypes to almost solid in IC-426968 and IC-427428. The leaf colour was green and dark green in 12 and 33 genotypes respectively. The leaf shape was round (IC-426968), lanceolate, ovate lanceolate and ovate in 2, 10 and 32 genotypes. The standard petal colour and keel petal colour varied among the genotypes. It was cream, pink, purple and white. Maximum pod length was reported by IC-427436 and IC-427462 (16.15 cm), mean pod width by PSRJ-12953 (6.36 cm), mean pod weight by IC-427436 (11.05 g) and number of seeds per pod (6.35) by genotype Sambram. The genotype IC-427436 recorded significantly higher pod yield per plant (2713 g) and pod yield per hectare (13563 kg) over rest of the genotypes and it was followed by the genotypes IC-427462 and RND-1.

scholarly journals Degree of inheritance and heritability of yield in parental genotypes and F1 hybrids of tobacco

2011 ◽  
Vol 56 (3) ◽  
pp. 165-172
Author(s):  
Jane Aleksoski ◽  
Ana Korubin-Aleksoska
Keyword(s):  
Block Design ◽  
Dry Mass ◽  
Broad Sense ◽  
F1 Hybrids ◽  
Broad Sense Heritability ◽  
Mass Yield ◽  
Narrow Sense ◽  
Narrow Sense Heritability ◽  
Genetic Components ◽  
Mode Of Inheritance

The mode and level of inheritance of green and dry mass yield per stalk were investigated in four parental genotypes (Burley - B 2/93, Suchum - S1, Suchum - S2 and Prilep - P-84) and in their six diallel F1 hybrids. The trial was set up in 2007, 2008 and 2009 in the field of Tobacco Institute-Prilep in a randomized block design with four replications. The aim of the investigation was to estimate the heritability as an indicator of the inheritance of the yield as one of the most important quantitative characters of tobacco, in order to give suggestions for the selection of parental genotypes and directions for the creation of new varieties. The mode of inheritance was estimated according to the test - significance of the mean value of F1 progeny compared to the parental average. Narrow-sense heritability was estimated after Allard (1960), while broad-sense heritability and genetic components were estimated after Mather and Jinks (1974). The mode of inheritance in the hybrids was different. Positive heterosis for green and dry mass yields per stalk was recorded in S1 x S2. Negative heterosis for green mass yields per stalk was recorded in S1 x P-84 and S2 x P-84, while for dry mass yield it was recorded in S1 x P-84. Inheritance of the characters during the three years of investigation was identical. The higher heritability index of both types was recorded for dry mass yield. As regards inheritance of the yield, the values of broad-sense heritability were higher than those of narrow-sense heritability.

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