Phenotypic Expression in Inter Subspecies Crosses of Cowpea (Vigna unguiculata (L.) Walp.) and Yard Long Bean (Vigna unguiculata (L.) Walp. spp. sesquipedalis)

By : G. Selvakumar , R. Usha Kumari

Page No: 101-108

Abstract
The study was carried out to analyse the phenotypic expression among crosses derived from 11 selected cowpea genotypes. The crosses were made in L x T fashion. By using six lines and five testers, thirty hybrids were synthesized. Genotypes GC 3, Co 6, ACM 05-07, RC 101, Co(CP)7, and ACM 05-02 belonging to Vigna unguiculata were used as lines. Vellayani Local, Ettumanoor Local, Vyjayanthi, Vellayani jyothica belonging to Vigna unguiculata spp. sesquipedalis and VBN 2 belonging to Vigna unguiculata were used as testers. Most of F1 plants resmle with the female parents in plant type. Colour of the seeds in F1 differed from the parents due to the different gene action. The gene action will be confirmed in further generation.

Authors :
G. Selvakumar : PhD scholar, Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India
R. Usha Kumari : Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Madurai 625 104, Tamil Nadu, India