Study of genetic parameters and genetic divergence in okra [<i>Abelmoschus Esculentus</i> (L.) Moench]

Singh, B. V.; Goswami, Aakansha; Panday, P.S.

doi:10.5958/0976-4623.2019.00016.1

Cited by 4 publications

(4 citation statements)

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“…Nevertheless, significant negative estimate is desirable for days to anthesis and silking, anthesis silking interval, maturity, plant and ear heights. This finding was confirmed by Singh and Singh [53], Singh et al [54], Ahmed et al [55] and Mohammad et al [52], who reported that earliness is linked with days to silk and the short plants with stumpy ear height are correlated with resistance to lodging. Whereas, significant positive estimate is desirable for number of tassels, cob circumference and length, number of seeds, 1000-seed weight (g) and grain yield (t.h -1 ).…”

Section: General Combining Ability (Gca) Effectssupporting

confidence: 63%

Combining Ability and Heterosis in Diallel Analysis of Maize (Zea mays L.) Lines

2020

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A sound breeding program for maize improvement is very important to meet the demands of the growing population. Therefore, combining ability and heterosis were studied in a 4 x 4 full diallel cross in maize for growth attributes, yield and its contributing traits. Randomized Complete Block Design (RCBD) with four replicates was used to study the general combining ability of parents, specific combining ability of F1s (including reciprocals) and heterosis of the F1s over commercial check variety on selected agronomic characters. Genotype was highly significant for all the traits studied. The combining abilities (GCA and SCA) and reciprocal mean squares were highly significant for most studied characters. The ratio of GCA/SCA was not less than unity for studied traits excepted for days to anthesis and ear height. The results indicated that the additive genetic effects were more important and played major role in studied traits. Thus, results revealed GCA effects for the parental lines (PL). Where ‘PL2’ was excellent combiner for number of tassels and cob circumference and ‘PL3’ was good combiner for days to silking and grain yield (t.h-1). While ‘PL4’ for short height. Majority of the F1s from the GCA effects showed high SCA effects. This F1 (PL2 x PL3) performed best amongst. However, several reciprocals were not desirable. Heterosis estimation was carried out using a commercial check, Oba super II. When commercial check was used, the percent heterosis especially on grain yield varied from -8.89 to 22.62%. Among the twelve F1s, nine of the crosses exhibited significant positive heterosis for grain yield (t.h-1). Those F1s that showed significant positive and/or negative desirable traits for SCA effects and significant positive heterosis could be used for varietal development in maize breeding. And conservation of those parents that exhibited high GCA effects be considered as well.

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Section: General Combining Ability (Gca) Effectssupporting

confidence: 63%

Combining Ability and Heterosis in Diallel Analysis of Maize (Zea mays L.) Lines

2020

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“…Among the quantitative characteristics registering significant difference among the genotypes, plant height and fruit weight had significant positive correlation yield per plant in different earlier studies (Kumar et al, 2015;Singh et al, 2006;Yadav et al, 2010). Variation in number of branches could be the result of selection or a natural adaptation mechanism (Reddy et al, 2016;Shujaat et al, 2014).…”

Section: Discussionmentioning

confidence: 77%

Isolation of yellow vein mosaic virus (YVMV)‐resistant mutants of okra (Abelmoschus esculentus L.) through applied mutagenesis

Hazra,

Gorai,

Roy

et al. 2023

Plant Breeding

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Okra, Abelmoschus esculentus (L.) Moench, being highly susceptible to yellow vein mosaic virus (YVMV) disease warrants its genetic improvement for resistance. Applied mutagenesis programme using two optimum doses of gamma radiation, namely, 350 Gy and 450 Gy radiation, was administered for the variety Pusa Sawani rated as excellent for fruit quality but highly susceptible to YVMV disease. Two selected putative mutant families, namely, 350//10///3‐9////28 and 450//66///2‐4////39, isolated in the M5 generation with slightly different plant morphology as compared to the parental genotype, Pusa Sawani, showed consistent resistance against YVMV disease. Upon evaluation in the M6 generation, eight morphological characteristics and five quantitative characteristics differed significantly among the mutants and Pusa Sawani. Proximate compositions and enzyme activity in leaf were significantly higher in the two YVMV‐resistant mutants. Disease screening under artificial inoculation in the insect proof cages confirmed YVMV resistance in these mutants. DNA fingerprinting further validated the alterations occurred in these two isolated mutants compared to the parental genotype. These mutants deserve due attention towards the development of YVMV‐resistant variety.

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“…The success of any crop improvement program depends, to a large extent, on the amount of genetic variability present in the population. Larger variability existing among the population better is the chance of selection (Singh and Singh, 1982). Frenkel (1947) emphasized the importance of variability in plant populations in designing the most breeding programme.…”

Section: Introductionmentioning

confidence: 99%

Genetic analysis in F3 generation of pumpkin (Cucurbita moschata Duch Ex. Poir)

2021

EJPB

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during 2018. The experimental plot was laid out in Randomized block design without replication due to segregating population with four crosses P2 X P5, P3 x P5, P5 x P6 and P6 x P5 selected from the F 2 generation based on the yield attributes of a single plant from the plant population and raised as F 3 generation to find out GCV, PCV, heritability, genetic advance, correlation and path analysis for growth and yield traits. Though in segregating generation the plant possesses bizarre of traits in plant population. However, a wider genetic variability was observed in the crosses. The mean performance for vine length (7.47), average fruit weight (1.15) and the number of fruits per plant (3.42) was estimated for the crosses P2 x P5, P3 x P5, P5 x P6 and P6 x P5. The PCV was registered high with low genetic advance over the mean for average fruit weight (40.44), the number of seeds per fruit (30.55) and fruit yield per plant (64.31). From the correlation it was revealed that the traits viz., average fruit weight (0.822), fruit diameter (0.417), the number of seeds per fruit (0.460) and hundred seed weight (0.340) showed a significant and positive association with fruit yield per plant in the F 3 generation. Path coefficient analysis revealed that the biometric traits viz., number of fruits per vine (0.5767) and average fruit weight (0.981) showed a positive direct effect on fruit yields per plant and traits like fruit diameter (0.4566), fruit length (0.3221), flesh thickness (0.1728), number of seeds per fruit (0.5719) and hundred seed weight (0.4939) exhibited positive indirect effect through average fruit weight.

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Study of genetic parameters and genetic divergence in okra [Abelmoschus Esculentus (L.) Moench]

Cited by 4 publications

References 0 publications

Combining Ability and Heterosis in Diallel Analysis of Maize (Zea mays L.) Lines

Combining Ability and Heterosis in Diallel Analysis of Maize (Zea mays L.) Lines

Isolation of yellow vein mosaic virus (YVMV)‐resistant mutants of okra (Abelmoschus esculentus L.) through applied mutagenesis

Genetic analysis in F3 generation of pumpkin (Cucurbita moschata Duch Ex. Poir)

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