Vol. 10, Issue 8 (2021)

Author(s):
Swarajyalakshmi N Bollineni, Padma V, Lakshminarayana R Vemireddy, Ramana JV, Satish Y and Bhaskara reddy BV

Abstract:
Transgressive segregation is the creation of hybrid progeny phenotypes that are away from the phenotypes of parents. These extreme phenotypes caused by transgressive segregation are heritably stable unlike heterosis. The genotypic variation present in the F₂ population gives an opportunity for individual selection of plants, which may result in development of a new variety or cultivar. The F₂ plants that exceeded the parental values were observed in all the traits viz., plant height (PH), number of panicles per plant (NPP), planicle length (PL), number of grains per panicle (NGP), spikelet fertility (SF%), grain yield per plant (GY), TGW (thousand grain weight), grain length (GL) and grain width (GW). More number of favourable “transgressive segregants” were observed for PL and TGW traits. There is more chance to pool the favourable alleles into a single line in the next generations through careful selection.