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Line × Tester Analysis Involving Diverse Cytoplasmic Systems in Sorghum
Author(s) -
Kishan A. Ganga,
Borikar S. T.
Publication year - 1989
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1989.tb00329.x
Subject(s) - heterosis , sorghum , biology , cytoplasm , cytoplasmic male sterility , hybrid , yield (engineering) , agronomy , grain yield , genetics , materials science , metallurgy
Sorghum hybrids, involving three iso‐sterile (A 1 , A 2 and A 4 ) females and a set of five fertility restorers, were evaluated for yield components in both rainy and winter seasons. In general A 2 cytoplasm had larger grain size and higher yield than traditional milo (A 1 ) cytoplasm and cytoplasm A 4 had an adverse effect of yield and yield components. Cytoplasmic systems also affected plants height, days to bloom and grain size. Restorers IS 12567C, IS 12662C and SPV 650 had desirable general combining ability effects. The cross (A 2 T × 398) × IS 12662C had the highest mean yield coupled with positive heterosis and specific combining ability effects, Exploitation of A 2 cytoplasm in Sorghum heterosis breeding is suggested.