Date of Publication: 31-Aug-2023
Early generation combining ability of maldandi restorers in rabi sorghum [Sorghum bicolor (L.) Moench]
Author: Prashant Kariyannanavar, M. C. Wali, B. D. Biradar, L. K. Verma, Pavan Kumar N.
Category: Research Article
In this study, a reported restorer on maldandi cytoplasm DSMR 8 was used to identify combining ability in early segregating generation. A large F2 population of the cross M31-2A × DSMR 8 was raised. Among them, fifteen superior restoring plants were selected and forwarded to the F3 generation. These fifteen F3 plants were crossed to three male sterile lines having both milo and maldandi cytoplasmic sources (M31-2A, 401A, and 104A) in L × T design. Among lines, MR 4 showed significant positive gca effects for six traits. Among 45 crosses 18 recorded high sca and the remaining 27 crosses showed low sca. The crosses M 31-2A × MR 12 and M 31-2A × MR 14 showed maximum overall sca status as they were having significant positive sca effects. Out of 15 lines, only five lines viz., MR 4, MR 12, MR 1, MR 13, and MR 2 could be forwarded to the next generation as these lines were transgressive seggregants for combining ability because of good gca and better per se performance when crossed to maldandi cytoplasm.
Keywords: early segregating generation, maldandi cytoplasm, restoration reaction