2011•Electronic Journal of Plant BreedingOpen access

Genetic analysis of F2 and transgressive segregants for seed yield in safflower (Carthamus tinctorius L.).

D. Shivani, C. Sreelakshmi, C.V. Sameer Kumar

Abstract

The wide range of F2 variability for seed yield, number of capitula per plant and number of seeds per capitulum in 24 crosses of line x tester set indicated potential of the crosses to throw large number of variable segregants. Maximum number of positive transgressive segregants was found in TSF-1 x SFS 9920, TSF-1 x SSF 658, TSF-2 x ASD-07-10, Sagarmutyalu x SFS 9920and Manjira x SSF 698 crosses. F1per se performance, relative heterosis, D2 and GCA effects of parents were found to be good indicators for predicting the phenotypic variance and genetic advance for seed yield in F2. Average GCA effects of parents had moderate degree of influence on the mean of 10% top yielding plants in F2.

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Key concepts: Carthamus, Heterosis, Transgressive, Biology, Transgressive segregation, Forensic science, Horticulture, Yield (engineering)