Vol. 7, Issue 3 (2019)
G x E interactions, sustainability index and their comparison in rice (Oryza sativa L)
Author(s): NR Koli, Manoj Kumar, Sandhya, Meena RK and Patidar BK
Abstract: Twenty promising genotypes of non-aromatic rice (Oryza sativa L.) were evaluated for stability of grain yield in complete randomized block design during kharif 2010-2012, at Agricultural Research station, Ummedganj, Kota (Raj) under transplanted condition of South-Eastern Plane Zone of Rajasthan. The genotypic yield, regression coefficient (bi) and deviation from regression (S2d) with sustainability index was used to identify the stability and adaptability of genotypes. Pooled analysis of variance showed highly significant differences among environments, genotypes and genotype x environment (G x E) interaction. Sufficient mean squares due to G x E interactions indicated that the genotypes interacted considerably with the environmental conditions. G x E (linear) components was highly significant showing the importance in expression of traits. The linear component was significant as against the nonlinear component (Pooled deviation), which revealed that a large portion of GxE interaction was accounted for by the linear regression through pooled deviation was significant. Over all mean performance and estimated stability parameters of grain yield, genotypes IET 21794, IET 22117, IET 22095, IET 22121 and IET 21515 were identified as superior which were well adapted to all the environments, stable with above average yielding ability or highest grain yield (59.93, 57.50, 57.17, 56.78 and 56.55 q/ha-1, respectively) with non-significant bi and s2d values coupled with high sustainability index. This showed that these varieties were better responsive to the favorable environments. Cultivars PR-113 and IR-64 (Checks) were good for low yielding environments (response to poor environment) and contradict with respect to the stability parameters and the sustainability index.
Pages: 972-975 | 341 Views 56 Downloads
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How to cite this article:
NR Koli, Manoj Kumar, Sandhya, Meena RK, Patidar BK. G x E interactions, sustainability index and their comparison in rice (Oryza sativa L). Int J Chem Stud 2019;7(3):972-975.
