Combining ability, heterotic grouping and patterning of mungbean [Vigna radiata (L.) Wilczek] lines for high seed yield

Abstract

An investigation was done to study the combining ability, heterotic grouping and patterning of mungbean lines using diallel analysis. The parents viz DMS-03-17-2 (for days to maturity, primary branches per plant, secondary branches per plant, seeds per pod, seed index, harvest index, seed yield per plant); IPM-2K-14-9 (for plant height); Meha (for primary branches per plant, secondary branches per plant, average intermodal length, pod length, seeds per pod & seed yield per plant); DMS-01-34-2 (for secondary branches per plant & seed index) and SML 1151 (for seed index) were found best general combiners, whereas crosses namely IPM-2K-14-9/ DMS 03-17-2 (for plant height), SML 1151/ DMS 01-34-2 (seed index) and SML 1151/ Meha, IPM-2K-14-9/ Meha, IPM-2K-14-9/ DMS 03-17-2 & Meha/ DMS 01-34-2 (for seed yield/ plant) were top specific combiners and heterotic for respective traits. The pattern of heterotic grouping based on seed size and yield indicated that, heterosis was not only dependent upon the genetic distance between clusters; diversity within group was also showing remarkable heterosis.

Elucidation of Nature of Gene Action and Combining Ability Associated with Economic Traits in Greengram [Vigna radiata (L.) Wilczek]

“…These results pointed out that selection should be practiced at the later generations. Similar findings of the relative estimates of dominance variance higher than the additive variance for all the yield and its associated traits in greengram was reported by Singh et al (2016) Contribution of lines and testers to total variance ranged from 18.80 (seed yield/plant) to 60.82 per cent (days to 50% flowering) and from 2.90 (clusters per plant) to 26.79 per cent (days to 50% flowering), respectively. The contribution of interaction ranged from 12.39 (days to 50% flowering) to 68.33 per cent (seeds per pod).…”

Branching Pattern and Harvest Index as Important Selection Criteria for Improvement of Mungbean [Vigna radiata (L.) Wilczek]

“…The positive association of SYP independent BYP and HI; negative association between BYP and HI clearly reflected optimization of BYP as it helps in manifestation of HI. Singh et al (2014b) also optimized the HI in mungbean for high seed yield.…”