Vol. 11, Issue 5 (2022)

Author(s):
Kishan Gajera, Mungra KD, Paghadar PJ, Chovatiya SJ, Pansuriya YA and Sidapara MP

Abstract:
Stability for grain yield performance and genotype x environment (G x E) interaction was studied in complete set of 64 genotypes [54 hybrids, six tester, three maintainer lines and one standard check (GHB 1129) were made by using line x tester mating design] of pearl millet evaluated in a randomized block design with three replications and three environments i.e. Kharif-2020 (DOS: 18^th July, 2020), Summer-2021 (DOS: 11^th February, 2021) and Summer-2021 (DOS: 21^st February, 2021) designated as E₁, E₂ and E₃, respectively at the two different locations, i.e. at Instructional Farm, JAU, Junagadh and PMRS, Jamnagar during kharif-2020 and summer-2021, respectively. Among parents, J-2602 (57.16 g) and among crosses, ICMA₄ 11999 x J-2591, ICMA₄ 11999 x J-2597, ICMA₅ 11999 x J-2597, ICMA₁ 11999 x J-2597, ICMA₅ 11999 x J-2607 and ICMA₅ 11999 x J-2591 were having more grain yield per plant and had the least deviation from linear regression, but had significant regression coefficient (bi >1) and found to be highly responsive to better environments. while ICMA₁ 14666 x J-2565 and ICMA₅ 14666 x J-2565 had more grain yield per plant with non-significant deviation from regression, but had significant regression coefficient (bi < 1) showed above average response and high stability under unfavourable environments. The stable parents J-2482 were also showed stability for important yield components like ear head girth, total biomass per plant, Fe and Zn content. This indicated that stability of various component traits might be responsible for the observed stability of various hybrids for grain yield per plant. Hence, chances of selection of stable hybrids for yield could be enhanced by selecting for stability for yield components.