Author(s):

Ramesh Naik R, Davda BK, Patel AR, Patak VD, Nagaraju Y and Bhamini VP

Abstract: The present study was conducted to investigate the possibility of exploiting heterosis in breeding for improved fodder yield in sorghum. Three cytoplasmic male sterile lines and twelve testers were crossed in a line × tester mating design. A total of thirty six F1 hybrids along with fifteen parents were evaluated for days to 50 % flowering, plant height, number of leaves, leaf length, leaf width, stem diameter, leaf: stem ratio, total soluble solid (TSS%), HCN content, green and dry fodder yield/plant. Among the thirty six hybrid combinations, 19 and 27 crosses had registered positive and significant heterobeltiosis and standard heterosis, respectively for green fodder yield. In case of dry fodder yield, 29 and 19 crosses depicted positive and significant heterobeltiosis and standard heterosis, respectively. The high standard heterotic hybrids for green fodder yield viz, AKMS 14A x CSV 21F, AKMS 14A x GFS 3, AKMS 14A x GFS 4, 2219A x HC 308 and AKMS 14A x GFS 5, also registered high positive and significant heterosis for yield attributing traits. The 2219A x SRF 289, AKMS 14A x GFS 5, 2219A x GFS 4, AKMS 14A x PANT CHARI 23 and 296A x SRF 305 depicted as promising heterotic hybrids for higher yield coupled with better quality like low HCN content and TSS%. While 296A x GFS 4, AKMS 14A x SRF 305, 2219A x HC 308, AKMS 14A x GFS 4, 2219A x SRF 289 and 296A x SRF 305 were for early flowering coupled with high green fodder yield and better or average performance for low HCN content.

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