Combining ability studies of pigeonpea CGMS lines with an obcordate leaf marker
DOI:
https://doi.org/10.59797/jfl.v28i3.968Keywords:
Combing ability, Line x tester, GCA, SCA, Obcordate leaf shape, PigeonpeaAbstract
Hybrid pigeonpea [Cajanus cajan (L.) Millsp.] breeding technology based on CGMS was recently developed. A program was initiated to track the purity of female parental lines by incorporating an obcordate leaf shape marker in established male sterile A-lines. Seven obcordate A-lines developed by backcrossing and selection were crossed with four known fertility restorers in line x tester mating design to study their general and specific combining ability. Higher magnitude of SCA effect showed that, hybrid yield was under the control of non-additive genes. Among A-lines, ICPA 2204 was the best general combiner. Among testers, ICPL 20116 was the best general combiner. Among hybrids, ICPA 2208 x ICPL 20108 a cross between high GCA parents was the best with positive significant SCA effect and higher mean performance for grain yield, 100-seed mass, number of seeds/ pod and resistance to fusarium wilt disease. The success of this technology will help addressing the issue of seed quality to some extent
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