COMPARATIVE EFFECTIVENESS OF PEDIGREE, BULK AND SINGLE SEED DESCENT BREEDING METHODS OF SELECTION FOR FODDER YIELD IN FORAGE COWPEA (Vigna unguiculata (L.) Walp.)
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Date
2023-01-12
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An investigation was carried out at Zonal Agricultural Research Station, GKVK, Bangalore to compare between pedigree, bulk and single seed descent breeding methods of selection for fodder yield and its component traits in two selected crosses i.e., MFC-09- 1 × KBC-5 and Pant lobia-2 × IC-402101 of forage cowpea. The experimental material is advanced from F3 to F6 generations using three breeding methods of selection during three seasons. Quantitative traits like green fodder yield, number of trifoliate leaves plant-1, plant height, number of primary branches plant-1, days to first flowering were considered to compare efficiency. The comparison was done through F-test using one way ANOVA. The mean performance of selected populations of pedigree was found to be superior followed by SSD and bulk for most of the targeted traits in both crosses. There is almost good agreement between predicted and realized genetic gain for all the three breeding methods of selection in cross MFC-09-1 × KBC-5 but there is considerable difference between them in cross Pant lobia-2 × IC-402101. Traits like biomass plant-1, plant height, number of trifoliate leaves plant-1 are associated with considerable amount of variability, GAM coupled with high heritability in both F5 and F6 generations in both crosses. This study can be continued up to F8 by further advancing selected lines obtained in all the three breeding methods of selection in two crosses to find out whether the trend with regard to the efficiency of different selection methods continues until the attainment of complete stable lines.
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