Studies on Choice of Parents and Gene Action in Rice Hybrids Involving Yield and Physiological Traits under Aerobic Condition
Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Madurai – 625104, India;
Plant Gene and Trait, 2013, Vol. 4, No. 19 doi: 10.5376/pgt.2010.01.0019
Received: 06 Jun., 2013 Accepted: 25 Aug., 2013 Published: 20 Sep., 2013
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Preferred citation for this article:
Sathya and Jebaraj., 2013, Studies on Choice of Parents and Gene Action in Rice Hybrids Involving Yield and Physiological Traits under Aerobic Condition, Plant Gene and Trait, Vol.4, No.19 104-108 (doi: 10.5376/pgt.2013.04.0019)
Combining ability and heterosis was studied in 21 parents and 90 hybrids for yield and physiological traits under aerobic condition. Analysis of variance was highly significant for all the characters and predominantly controlled by non additive gene action. IR79128A (L1), IR79156A (L2), IR70369A (L4), IR7925A-428-2-1-1R (T11), KMP -148 (T12) and BI-33 (T15) were adjudged as the best combiners for most of the yield contributing characters. The hybrids IR70369A / IR 7925A-428-2-1-1R, IR 79128A / BR -2655, IR70369A /KMP-105 and IR 79128A / KMP -149 were found to have specific combiners for most of the yield contributing and drought tolerant traits including single plant yield.
Aerobic rice;eneral combining ability; Specific combining ability; Non additive gene action