Genetic Variability, Heritability, Genetic Advance and correlation studies for seed yield and yield components in early segregating lines (F3) of Greengram [Vigna radiata (L.) Wilczek]

Abstract

The present investigation was conducted with the F3 breeding lines derived from three crosses viz., DGGV-7 × V-02-709, DGGV-7 × V-02-802, DGGV-2 × SML-1815 along with their parents used as checks. The progeny lines were evaluated for estimation of genotypic coefficient of variation (GCV), phenotypic coefficient of variation (PCV), heritability and genetic advance. The correlation study was undertaken among the ten selected quantitative characters. The analysis of variance showed, the progeny lines derived from the cross DGGV-7 × V-02-709, recoded very high significant variation for the characters like the number of branches per plant (2.988), pod length (2.363) and seed yield per plant (13.007g). The 100 seed weight (4.7g) was observed in the cross derivative of DGGV-2 × SML-1815 with high heritability 73.26 per cent and moderate genetic advance under mean (19.65). The breeding lines of DGGV-7 × V-02-709 have recorded mean seed yield 3.7 g with the range of 3.22 to 4.65 g and the PCV (17.35%), GCV (14.23%) was moderate with high heritability (72.12%) coupled with moderate genetic advance over mean (17.45%). There is a positive significant correlation was observed between plant height, number of clusters per plant, number of pods per plant, number of seeds per pod and seed yield per plant. Therefore, these characters should give higher priority at the time of selection for improvement of yield in greengram.

Enhancement of Genetic Variability for Yield and Component Traits through Recombination followed by Induced Mutagenesis in Greengram [Vigna radiata (L.) Wilczek]

“…The seed yield per plant was 8.3 g and 10.8 g respectively; while the 100 seed weight was recorded as 5.4 g for both the progenies. These findings were in accordance with the earlier reports for seed yield [21,22,31,32]. From the present study, days to 50 per cent flowering and days to maturity was delayed with 100 kR dose as compared to 20 kR.…”

“…The variability parameters are compared between the normal segregating population in F 3 generation [22] and in F 2 M 2 generation on the same cross derivatives. It was observed higher variability for most of the yield attributing traits in greengram in F 2 M 2 generation as compared to F 3 generation.…”

Analysis of Genetic Diversity in Greengram (Vigna radiata L. Wilczek)

“…Based on dry weight, it contains approximately 25-28% protein, 1.0% oil, 3.5-4.5% fiber, 4.5-5.5% ash and 62-65% carbohydrates. It also contains vitamin A (94 mg), iron (7.3 mg), calcium (124 mg), zinc (3 mg) and folic acid (549 mg) per 100 g dry seed" [5,6].…”

Studies on correlation and path coefficient for growth and yield attributes in green gram (Vigna radiata L. Wilczek)

“…It provides a high-quality protein supply (22-24%) and boosts the incomes of small-scale farmers (Rahim et al, 2010) [6] . Mature grain has carbohydrates (62.6g), fibre (16.3g), fat (1.2g), protein (23.9g) and 347 calories per 100 grams (Majhi et al, 2020) [7] .…”