Comparison of three breeding methods for transgressive segregation for yield and its components in grasspea (Lathyrus sativus L.)

The F2 populations of 2 crosses of grasspea viz. ‘RED’ x ‘P 28’ and ‘RED’ x ‘EC 242692’ were advanced by following single seed descent, random bulk and pedigree methods up to Fs generation during the period from 1992–93 to 1994–95 at Indian Agricultural Research Institute, New Delhi and IARI of fseason nursery, Dharwad, Kamataka. The F5 populations of these crosses were evaluated for comparing the relative efficiency of these 3 breeding methods in obtaining transgressiv segregants for yield and its components. The single seed descent method proved to be superior to random bulk and pedigree methods in producing greater frequency of transgressive segregants in Fs generation for yield and its components, whereas the random bulk method showed a poor performance in this regard.