1International Institute of Tropical Agriculture, PMB 5320, Ibadan200 001, Nigeria
2Department of Plant Breeding and Seed Technology, Federal University of Agriculture, PMB 2240, Abeokuta, Nigeria
3Department of Genetics and Plant Breeding, Chaudhary Charan Singh Haryana Agricultural University, Hisar-125 004, Haryana, India
4Department of Crop Production, University of Ibadan, Nigeria
*Corresponding Author: Gbemisola O. Otusanya, Department of Plant Breeding and Seed Technology, Federal University of Agriculture, Abeokuta, Nigeria, Email: igegbemi@gmail.com
Online Published on 30 March, 2022.
The success of hybridization programme depends on the combining ability of parental lines.
Seven soybean genotypes and all their partial Ciallel crosses in the F2 generation were evaluated in a randomized complete block design at two locations in Nigeria, during the 2017–2018 growing season.
Analysis of variance showed that both environments and genotypes were significantly different for all measured traits. The genotype TGx 1988-5F was the best general combiner for earliness in flowering and poding, while TGx 1448-2E was the best general combiner for number of pods/plant and seed yield/plant. Crosses having significant and positive specific combining ability effect for number of pods/plant and seed yield/plant were TGx 1485-1D x TGx 1448-2E and TGx 1988-5F x TGx 1989–19F, respectively. Genotypes TGx 1988-5F and TGx 1448-2E exhibiting good general combining ability for earliness and seed yield/plant, are thus, promising for utilization in the future hybridization programme for soybean improvement.
General combining ability, Partial diallel, Soybean, Specific combining ability
