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R. G. Sandeep M. R. Gururaja Rao S. Ramesh Chikkalingaiah Chikkalingaiah H. Shivanna

Abstract

The exploitation of heterosis through the development and deployment of hybrids for commercial cultivation is one of the effective approaches for genetic enhancement of crop plants for traits of economic importance. Developing an objective criterion of choosing the parents for developing and testing hybrids is essential for maximizing the success of heterosis breeding. A set of 18 crosses produced from parents differing in their gca effects for bio-energy traits such as millable cane yield, juice volume and juice sugar content (as indicated by Brix %) were evaluated in replicated trial in the experimental plots of the Department of Genetics and Plant Breeding, University of Agricultural Sciences, Bangalore during 2006-07. The utility of parental general combining ability for producing high frequency of superior crosses for a set of bio-energy traits in sweet sorghum was investigated. The study suggested that parents with contrasting gca effects produce crosses with higher sca and heterotic potential for the bio-energy traits. The use of female parents with higher gca effects is important for realizing greater probability of crosses with sca effects and heterosis in desirable direction for bio-energy traits.

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Keywords

Sweet sorghum, Bio-energy traits, Gca effects, Sca effects, Heterosis

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How to Cite
Sandeep, R. G., Rao, M. R. G., Ramesh, S., Chikkalingaiah, C., & Shivanna, H. (2010). Parental combining ability as a good predictor of productive crosses in sweet sorghum [Sorghum bicolor (L.) Moench]. Journal of Applied and Natural Science, 2(2), 245–250. https://doi.org/10.31018/jans.v2i2.129
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