Author:
C NANDINI ,Y G SHADAKSHARI ,K T PUTTARANGASWAMY ,K KARUNA
Abstract
Six diversifiedCMS lines ARG-6-3-1-4, PKUZ, ARG-3, ARG-2-1-2, PRUN-29 and MUT2-8-3-2 were crossedwith ninety six inbred lines in a line x tester fashion to study their sterility maintenance or fertility restorationreaction. Out of 96 inbreds tested, 48 inbreds restored fertility in the diversified CMS lines viz., ARG-6-3-1-4,PKUZ, ARG-3, ARG-2-1-2, while 47 and 45 inbreds restored fertility in MUT2-8-3-2 and PRUN-29, respectively.On the other hand, 39, 46, 45, 43, 44 and 46 inbreds maintained sterility in the diversified CMS lines ARG-6-3-1-4,MUT-2-8-2, PUKZ, ARG-3, PRUN-29 and ARG-2-1-2, respectively. Among 96 inbreds, as many as 38 inbreds were identified as common maintainers for all the six diverse CMS lines. Similarly, 39 inbreds were identified as common restorers for all the six diverse CMS lines. Effective restorer lines identified for alternate sources ofcytoplasm could be exploited in developing hybrids with better heterosis and it can pave way for broadening theCMS sources used in commercial hybrid development. Identified promising maintainer lines could be used indevelopment of new CMS lines through conversion.
Publisher
Indian Society of Oilseeds Research
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