Diverse genetic resource from inter-specific hybridization in cotton Gossypium spp

Abstract

The inter specific cotton mapping population (Gossypium hirsutum cv DS-28 x Gossypium barbadense cv SBYF-425) was evaluated during 2017-18 and 2018-19 at the University of Agricultural Sciences Dharwad. As expected from theinterspecific hybridization, higher variability was observed in the advanced generations of the lines. The presence of highervariability was represented by wide range of individuals identified. The range observed was from 7.61-64.84 g/plant of seedcotton yield, 2.04 to 5.89 g of boll weight, 27.83 to 43.61 % of lint percentage, 24.74 to 33.71 mm of upper half mean length,23.83-33.48 g/tex of fiber strength and 2.92 to 4.63 of micronaire. As the evaluated lines are beyond F13 &F14 generations, theyare genetically stable and uniform. Some of them were having high seed cotton yield with fiber quality (RIL-77, 88, 93 &133),suitable for spinning yarn above 60’s counts and can be released as varieties or they can also be used as parents in developingintra-hirsutum commercial hybrids. There are also lines which were not having combination of desirable traits, but are highlydesirable for single traits, such lines could be utilized as donor parents in further breeding programme