Abstract:
Drought is an important limiting factor, adversely affecting the crop production in recent years. In order to design an efficient breeding programme for synthesis of new varieties with virtues of drought tolerance and high yielding ability, it is necessary to identify potential parents that combine well for both yield and drought tolerance. Hence, the present investigation was undertaken to study the genetic potentiality of eight lines (drought tolerance genotypes) and five testers (high yielding varieties) along with their resultant 40 hybrids were assessed through combining ability estimates for 15 physio-morphological and yield contributing traits under moisture stress condition. Four lines viz., Moroberekan, CT 9993, Norungan and Nootripathu and two testers viz., MDU 5 and ASD 16 were identified as potential parents based on mean and gca effects. Four cross combinations viz., Moroberekan/MDU 5, CT 9993/MDU 5, Moroberekan/CO 47 and Norungan/MDU 5 were identified as best crosses to get desirable segregants for recombination breeding under water stress condition.
S. Ganapathy, S.K. Ganesh and R. Chandra Babu, 2007. Evaluation of Genetic Potential of Parents and Their Hybrids for Drought Tolerance in Rice (Oryza sativa L.). International Journal of Plant Breeding and Genetics, 1: 82-88.
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