ISSN 2756-3847
International Journal of Plant Breeding and Genetics ISSN 5756-2145 Vol. 1 (3) pp. 048-056, December, 2014. © International Scholars Journals
Full Length Research Paper
Genetic studies in connection to yield and quality characteristics in rajmash (Phaseolus vulgaris L.)
*Subhar Tendulkar, Swami E. Modi and Mahatma E. D
Department of Breeding, Genetics and Plant Molecular biology, School of Biological Sciences. University of Calicut, Malappuram, India.
E-mail: [email protected].
Accepted 26 November, 2014
Abstract
The experimental material comprised of 45 F1s generated by crossing ten diverse genotypes of rajmash (Phaseolus vulgaris L.) in a diallel mating design. The set of 45 test cross progenies along with their ten parents were evaluated in a randomized block design with two replications at the Pulse Research Sub-station, SKUAST-K Habak, KVK Farm SKUAST- K Pombai, Anantnag and the Faculty of Agriculture, SKUAST-K Wadoora to study the gene action for yield and quality traits in rajmash (P. vulgaris L.). The component analysis indicated preponderance of non-additive gene effects in the inheritance of all the traits studied in the data pooled over environments. Net dominance effect over all loci in heterozygotes (h2) was significant and positive for all the traits indicating unidirectional dominance, which was also confirmed from the value ˆ 2 /4 ˆ 1 that indicated asymmetrical gene distribution. The value of KD/KR was all the traits. The graphical analysis indicated dominance in the case of primary branches per plant, secondary branches per plant, number of pods per plant, pod length and seed yield per plant, whereas for rest of the traits, partial to complete dominance was observed. Intermating among the progenies within and between promising crosses in early segregating generations is suggested for further improvement.
Key words: Rajmash, diallel, genetic analysis, inheritance.