Vol. 12, Issue 5 (2023)

Author(s):
Bollaboina Ramnath, Pilli Manasa, Dr. Shailesh Marker, N Mohan Satyakar Rao and C Umesh

Abstract:
A set of six diverse inbred lines were crossed as per diallel analysis (Griffing 1956 Model I and Method II) in Rabi-2015 to generate 15 crosses (direct crosses). These 15 crosses were evaluated along with 6 parents and 1 check viz., Shakthiman-5 in Randomized Block Design along with three replications in a five rows plot of 5 meter length having 60 x 20 cm crop geometry during kharif-2016 at the Field Experimentation Centre of Department of Genetics and Plant Breeding, Naini Agricultural institute, Sam Higginbottom University of Agriculture, Technology and sciences, Allahabad. The data were recorded on ten characters to study the pattern of heterosis and combining ability. The crosses HKI-17-2 X HKI-164-4 (1-3)-2 recorded highly positive significant heterosis at all the three levels for oil content (92.39**, 52.29** and 3.25**) high per se performance for oil (4.50), and starch content (15.23**, 14.04** and 10.74**) high per se performance for starch content (80.43) and for grain yield per plant (34.93**, 19.68** and 19.68**) respectively. This hybrid also possess highest per se performance for grain yield per plant 150.00 (g). Another single cross hybrid CML (CML 161, CML451)-B X HKI-164-4 (1-3)-2 exhibited maximum significant heterosis (24.43**, 21.14** and 9.56**) for all three types of heterosis along with highest per se performance (9.93) for protein content. Combining ability analysis revealed that estimate of specific combining ability SCA variances were higher than general combining ability GCA variances for all the traits under study, indicating predominance of non-additive gene action of these traits. The parents HKI-17-2, HKI-164-4 (1-3)-2 and CML (CML 161, CML451)-B were identified as good combiners for yield and quality traits. The best experimental hybrid, on the basis of per se performance, SCA and standard heterosis for grain yield per plant and quality traits was HKI-17-2 X HKI-164-4 (1-3)-2. Gene action analysis revealed preponderance of non-additive genes for yield and quality traits.