scholarly journals Phenotypic Variability of The F2 Populations Derived from Crosses Between Local and Introduced Okra Cultivars

2021 ◽  
Vol 5 (2) ◽  
pp. 64-73
Author(s):  
P.K. Dewi Hayati ◽  
Mairati Mandwi Yld ◽  
Sutoyo Sutoyo ◽  
M Zaitialia
Keyword(s):  
Phenotypic Variability ◽  
Leaf Shape ◽  
Fruit Shape ◽  
Descriptive Statistics ◽  
Agronomic Characters ◽  
F2 Population ◽  
Quantitative Characters ◽  
Individual Observation ◽  
Qualitative Characters ◽  
Selection Of

Okra (Abelmoschus esculenthus) is a vegetable plant consumed in immature and tender texture fruits. Crosses of local okra with introduced varieties are carried out to improve the character of the local cultivars. This study aimed to assess the variability of agronomic characters, both quantitative and qualitative characters of various families of the F2 populations and select superior families that can be used to produce new cultivars. The F2 population was derived from inbreeding and selection of the crosses between local okra cultivars with B291 and Ve022 as introduced cultivars. The study used an experimental method with an individual observation. Qualitative characters were described based on the descriptor by IBPGR, while quantitative characters were analyzed using descriptive statistics. Results showed variation in each F2 family in plant height, the number of flowers per plant and the number of fruits per plant, except for SOMB291-16. FOHVE022-8, FOHB291-15, FOHVE022-17, SOMB291-23 and SOMB291-24 families could be selected due to the extended picking time were in line with the increase of fruit quality. A broad variability of quantitative characters was found for all characters, indicating a high opportunity to obtain valuable traits and desirable segregants in F2 populations. Variations in qualitative characters were found in stem color, leaf shape, fruit color and fruit shape. The selection of plants with specific characters could be maintained with inbreeding or self-pollinated desirable segregants.

scholarly journals Analisis Genetik dan Seleksi Segregan Transgresif pada Populasi F2 Sorgum Hasil Persilangan B69 × Numbu dan B69 × Kawali

2019 ◽  
Vol 47 (2) ◽  
pp. 163-170 ◽  
Author(s):  
Marina Yuniawati Maryono ◽  
Trikoesoemaningtyas , ◽  
Desta Wirnas ◽  
Dan Soeranto Human
Keyword(s):  
Grain Yield ◽  
Gene Action ◽  
Agronomic Characters ◽  
Additive Gene Action ◽  
F2 Population ◽  
Transgressive Segregant ◽  
Additive Gene ◽  
High Heritability ◽  
Transgressive Segregants ◽  
Selection Of

The genetic analysis and selection of transgressive segregants on agronomic characters are required in a sorghumbreeding program for obtaining high proportion homozygosity rapidly in the early generations. This study aimed to obtainthe information on the performance of agronomic characters, estimate genes’ action, broad-sense heritability, coefficient ofgenetic variability, and select transgressive segregant on F2 population of sorghum based on grain yield. The research wasconducted from July 2014 until October 2014 in Dramaga, Bogor. About 300 and 150 individuals F2 populations of B69 ×Numbu and B69 × Kawali, respectively, were used as genetic materials. The results showed that plant height and paniclelength of B69 × Numbu and B69 × Kawali populations were controlled by many genes with additive gene action. The grainyield and grain yield per panicle were controlled by many genes with additive gene action and complementary epistasis,had high heritability, and large coefficients of genetic variability. The transgressive segregant selection had selected 14individuals of B69 × Numbu and 134 individuals of B69 × Kawali populations based on grain yield per panicle.

scholarly journals Minimal number of morphoagronomic characters required for the identification of pineapple (Ananas comosus) cultivars in peatlands of Riau, Indonesia

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
Rosmaina Rosmaina ◽  
Rita Elfianis ◽  
Abdi Almaksur ◽  
Zulfahmi ZULFAHMI
Keyword(s):  
Genetic Resources ◽  
Plant Genetic Resources ◽  
Economic Value ◽  
Fruit Shape ◽  
Fruit Weight ◽  
Leaf Length ◽  
Ananas Comosus ◽  
Agronomic Characters ◽  
Tropical Fruit ◽  
Qualitative Characters

Abstract. Rosmaina, Elfianis R, Almaksur A, Zulfahmi. 2021. Minimal number of morphoagronomic characters required for the identification of pineapple (Ananas comosus) cultivars in peatlands of Riau, Indonesia. Biodiversitas 22: 3854-3862. Pineapple (Ananas comosus L Merr)  is a tropical fruit that has high economic value. In Riau Province, Indonesia, pineapples grow and produce well on various types of land, including the highly acidic peatland. There are many types of pineapples grown by  from generation to generation, but so far, there have been no reports regarding the diversity of pineapples in peatlands. This study aimed to determine the minimal number of characters distinguishing pineapple morphological and agronomic characters in peatlands. The observations were done on 24 local genotypes of pineapple in peatlands. Characterization were carried out on 49 morphological and agronomic characters according to the Pineapple descriptor from the International Board for Plant Genetic Resources (IBPGRI). The data were analyzed by Multivariate Analysis, in which the principal components analysis was used for qualitative and quantitative traits. Based on the results of this study, there were at least 12 characters proposed to describe pineapple in peatlands, viz. seven qualitative characters (fruit base leaf color (collar), fruit shape, bractea color, fruit eye profile, fruit eye surface, flesh color, crown attachment to fruit) and five quantitative characters (fruit weight, fruit flesh weight, plant height, number of leaves and leaf length). Out of the 49 traits observed,  12 selected characters can be used as a minimal number of characters that can be used to identify pineapple cultivars on peatland. The findings of this research are rewarding for the conservation and management of genetic resources, selection, and breeding activities of pineapple plants.

scholarly journals Lampanah Local Tall-A High Yielding Variety for Replanting Coconut in Tsunami Affected Aceh Province Area

CORD ◽  
2017 ◽  
Vol 33 (2) ◽  
pp. 13
Author(s):  
Hengky Novarianto
Keyword(s):  
Fatty Acids ◽  
Saturated Fatty Acids ◽  
Fruit Shape ◽  
Total Production ◽  
Pests And Diseases ◽  
A Value ◽  
Round Shape ◽  
Quantitative Characters ◽  
Aceh Province ◽  
Selection Of

Aceh province is one of major coconut producing areas in Indonesia. In 2013 coconut areas in Aceh province was 107,654 ha in which total production of copra was equivalent to 63,743 tons.  The entire coconut area in Aceh belong to smallholders. The coconut production in this area began to decrease in 2005 by an average of 9 percent per year, which was mainly caused by the tsunami.  This had resulted in damage to many crops. Efforts to increase production and productivity of coconut plantation in Aceh needed rejuvenation of the old or unproductive coconut palms with the use of seeds of improved quality.  Based on the results of the research conducted during 2014-2016, it is known that the origin of the Lampanah tall is passed from generation to generation and is a native of coconut in Aceh Besar Regent, Aceh Province. The morphology of Lampanah tall coconut comprising of the crown of leaves, stems, flowers and fruits in general is quite uniform. Of the data on the 23 quantitative characters, all have a value of coefficient of variance below 20%, except the character of 11 leaf scars obtained 23.29%. In the case of polar girth, Lampanah tall coconut is generally greater than the equatorial girth, fruit shape classified as round, egg-shaped and elliptic. The seednut of Lampanah tall generally round shape. The Lampanah tall coconut has the number of bunches at 13.35/palm and the number of fruit at 9.25 fruits/bunch or an average of 138 fruits/palm/ year. Fresh coconut meat weight is 449 g/nut or approximately 224 g copra/nut and the potential for copra production was 30.97 kg/palm/year or 3.80 tons of copra/ha/year. The fat content of Lampanah tall coconut was 66.40%, the water content of copra approximately 3.42% and protein at approximately 6.81%. Total saturated fatty acids was at 94.27%, medium chain saturated fatty acids at 67.21% and lauric acid content at 46.50%. The seed source of Lampanah tall coconut has been a selection of as much as 72 Selected Mother Palms (MAS) from a total of 407 palms of the High Yielding Block. The selected population is characterised with traits like copra yield more than 2.0 ton/ha/year, free from attack pests and diseases, number of bunch more than 12 per year, total nuts more than 7/bunch and weight of meat more than 400 g/nut. The MAS of Lampanah tall whole coconut has been marked using GPS. The Aceh government will build a minimum of 5 ha Coconut tall Seed Gardens on government land, as the development of source of Lampanah tall seednuts. Based on the above results, it can be concluded that the Lampanah tall coconut with plenty of nuts, at an average of 138 nuts per palm could be released as one of the national high yielding coconut.

scholarly journals ​Advances in Breeding of Jackfruit Crop: A Review

2021 ◽  
Author(s):  
R.K. Ramachandra ◽  
Vishnuvardhana . ◽  
B. Fakrudin ◽  
B. Anjaneya Reddy
Keyword(s):  
Leaf Shape ◽  
Fruit Size ◽  
Value Added ◽  
Leaf Size ◽  
Fruit Shape ◽  
Detailed Knowledge ◽  
Size Number ◽  
Hybrid Variety ◽  
Selection Of ◽  
Value Added Products

The improvement of jackfruit is required to make it amenable for intensive cultivation and make it suitable for a variety of value-added products. There is a significant variation for various traits such as plant phenology, leaf shape, leaf size, fruit shape, fruit size, number of fruits per plant, flake colour, number of flakes per fruit etc. The jackfruit crop has long juvenility, high clonal heterozygosity, recalcitrant type of seeds make it difficult to improvement of jackfruit varieties or hybrids, but on the other hand ease of vegetative propagation of hybrids or varieties is advantageous for the jackfruit breeder. The development of jackfruit is again based on the selection of clones especially for small-sized quality fruits, dwarf, less gum type, disease and pest resistance etc. The detailed knowledge on phenology, inheritance pattern and advanced techniques for hybrid/variety development will be useful to overcome the problems of jackfruit breeding viz fruit size, gummier fruits, susceptibility to disease and pests etc. The development of genetic markers has further reduced the uncertainty in the breeding of jackfruit and maintains the hybrid/varietal populations with desirable characteristics.

scholarly journals MORPHOTAXONOMIC RE-CLASSIFICATION OF C. ANNUUM VAR. ACCUMINATUM FINGERH AS C. FRUTESCENS VAR. ACCUMINATUM

2020 ◽  
Vol 18 (1) ◽  
pp. 50-67
Author(s):  
A. S. OYELAKIN ◽  
O. O. FAWIBE ◽  
D. O. OLABIYI
Keyword(s):  
Block Design ◽  
Leaf Shape ◽  
Morphological Characters ◽  
Fruit Shape ◽  
Visual Observation ◽  
Mean Values ◽  
Corolla Colour ◽  
Qualitative Characters ◽  
Characteristic Features ◽  
Flower Position

The taxonomic identities of some Capsicum varieties are somewhat controversial. This study is aimed at using morphological characters to ascertain the Capsicum species to which variety accuminatum belongs. The study was conducted at the Experimental Plot of the Department of Pure and Applied Botany, Federal University of Agriculture, Abeokuta (Latitude: 7.214952; Longitude: 3.437090) using a Randomized Complete Block Design (RCBD) in 10 replicates. Quantitative and qualitative characters were evaluated through measurements and visual observation respectively. Data were analyzed using Statistical Analysis Systems version 9.2 and Duncan's Multiple Range Test was used to separate means at p ˂ 0.05. The reults revealed erect growth habit, lanceolate leaf shape, pendant flower position, white corolla colour, obtuse fruit shape at pedicel, elongated fruit shape, and pointed fruit shape at blossom end on variety accuminatum as characteristic features of C. frutescens. Plant canopy width 103.41±(4.30) cm, number of branches per plant 24.70±(0.15), days to flowering 73±(0.21), fruit length 11.69±(0.07) cm and fruit width 5.78±(0.05) cm in variety accuminatum are closer to mean values in C. frutescens. This study showed that variety accuminatum is morphologically and evolutionary related to C. frutescens. Therefore, re-naming of C. annuum var. accuminatum is hereby suggested and proposed to be C. frutescens var. accuminatum.    

Study of tomato hybrids in summer-autumn turnover in JSC Teplichnoye, Tambov region

2020 ◽  
Author(s):  
K.A. Chupkin ◽  
◽  
V.I. Terekhova ◽  
A.V. Konstantinovich
Keyword(s):  
Fruit Shape ◽  
Vegetable Crops ◽  
Selection Of

Requirements for modern tomato hybrids are increasing both on the part of consumers and on the part of producers. Producers are interested in hybrids with an original fruit shape, color, taste and aroma. The aim of the research was the variety study of indeterminate F1 tomato hybrids of the breeding company "Gavrish" in JSC "Teplichnoe", Tambov region. The research was carried out in 2017-2018. in summer-autumn turnover in the conditions of JSC "Teplichnoye" in the Tambov region in accordance with generally accepted recommendations for research with vegetable crops in greenhouses. Based on the results of the study of tomato hybrids of the selection of the "Gavrish" company, the enterprise decided to increase the area in the summer-autumn turnover under the F1Panther hybrid.

scholarly journals QTL Mapping for Gummy Stem Blight Resistance in Watermelon (Citrullus spp.)

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 500
Author(s):  
Eun Su Lee ◽  
Do-Sun Kim ◽  
Sang Gyu Kim ◽  
Yun-Chan Huh ◽  
Chang-Gi Back ◽  
...  
Keyword(s):  
Chromosome 8 ◽  
Chromosome 6 ◽  
Potential Candidate ◽  
Stem Blight ◽  
Gummy Stem Blight ◽  
F2 Population ◽  
Leaf Lesion ◽  
Phenotypic Variations ◽  
A Minor ◽  
Selection Of

Watermelon (Citrulluslanatus) is an economically important fruit crop worldwide. Gummy stem blight (GSB) is one of the most damaging diseases encountered during watermelon cultivation. In the present study, we identified quantitative trait loci (QTLs) associated with GSB resistance in an F2 population derived from a cross between maternal-susceptible line ‘920533’ (C. lanatus) and the paternal-resistant line ‘PI 189225’ (C. amarus). The resistance of 178 F2 plants was assessed by two different evaluation methods, including leaf lesion (LL) and stem blight (SB). To analyze the QTLs associated with GSB resistance, a linkage map was constructed covering a total genetic distance of 1070.2 cM. QTL analysis detected three QTLs associated with GSB resistance on chromosome 8 and 6. Among them, two QTLs, qLL8.1 and qSB8.1 on chromosome 8 identified as major QTLs, explaining 10.5 and 10.0% of the phenotypic variations localizing at same area and sharing the same top markers for both LL and SB traits, respectively. A minor QTL, qSB6.1, explains 9.7% of phenotypic variations detected on chromosome 6 only for the SB trait. High-throughput markers were developed and validated for the selection of resistant QTLs using watermelon accessions, and commercial cultivars. Four potential candidate genes were predicted associated with GSB resistance based on the physical location of flanking markers on chromosome 8. These findings will be helpful for the development of watermelon cultivars resistant to GSB.

scholarly journals Plant selection in F2 segregating populations of papaya from commercial hybrids

2012 ◽  
Vol 12 (3) ◽  
pp. 191-198 ◽  
Author(s):  
Eder Jorge Oliveira ◽  
Gilberto de Andrade Fraife Filho ◽  
Juan Paulo Xavier de Freitas ◽  
Jorge Luiz Loyola Dantas ◽  
Marcos Deon Vilela de Resende
Keyword(s):  
Genetic Parameters ◽  
Mixed Model ◽  
Soluble Solids ◽  
Fruit Firmness ◽  
Plant Selection ◽  
F2 Population ◽  
The Common ◽  
Mixed Model Methodology ◽  
Fruit Diameter ◽  
Selection Of

The objective of this paper was to estimate the genetic parameters and additive genetic values in segregating populations of papaya using the mixed model methodology. Two F2 populations from Tainung and Calimosa hybrids were evaluated. The experimental design was an augmented block with four replicates, and Golden and Calimosa cultivars were the common treatment. Estimates of individual heritability were high for fruit length (FL) and weight (FW), moderate for fruit diameter (FD), and low for total soluble solids (TSS) and fruit firmness (FF). Considering FF and TSS as main traits for selection, genotypes of Calimosa-F2 population showed better performance to FF, but worse concerning TSS. It was selected 18.3% and 24.6% of plants from Tainung-F2 and Calimosa-F2 populations, respectively. Negative correlation between TSS and FF was not able to reduce the genetic gains. The segregating populations from Calimosa hybrid are more promising for the selection of papaya lines.

scholarly journals Selection of tomato lines and populations for fruit shape and resistance to tomato leafminer

2020 ◽  
Vol 38 (2) ◽  
pp. 117-125
Author(s):  
Nathalia CV Resende ◽  
Alex Antonio da Silva ◽  
Wilson Roberto Maluf ◽  
Juliano Tadeu V de Resende ◽  
Andre Ricardo Zeist ◽  
...  
Keyword(s):  
Fruit Shape ◽  
Tuta Absoluta ◽  
Fruit Morphology ◽  
Santa Cruz ◽  
Solanum Pennellii ◽  
Market Segments ◽  
Tomato Leafminer ◽  
Wild Accessions ◽  
Market Requirement ◽  
Selection Of

ABSTRACT The market requirement regarding fruit type varies from region to region and it is necessary to produce cultivars with different patterns of fruit morphology. Therefore, the aim of this study was to select lines with resistance to tomato leafminer and different fruit shapes in order to meet the different market segments. Seventy-six lines and pre-selected populations were used for pest resistance together with four other susceptible controls (TOM-584, TOM-684, NC-123S, and Santa Clara) and two wild accessions (Solanum pennellii ‘LA 716’ and S. habrochaites var. glabratum ‘PI-127826’) considered resistant. The experiment consisted of tests of resistance to the tomato leafminer Tuta absoluta. The selection of lines was efficient, being obtained 33 lines or populations resistant to the tomato leafminer that comprise the market segments of the types of multilocular fruit, Santa Cruz, Saladette or Italian, as well as intermediate standards of fruits.

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