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Intra-varietal stability performance of popular rice landrace ‘C14-8’ in the Andaman Islands

Gautam, R. K. and Singh, P. K. and Venkatesan, K. and Sakthivel, K. and Zamir Ahmed, S. K. and Swain, S. and Devakumar, K. and Rao, K. Shyam Sunder and Meena, B. L. and Iquebal, M. A. and Jaiswal, S. (2020) Intra-varietal stability performance of popular rice landrace ‘C14-8’ in the Andaman Islands. CEREAL RESEARCH COMMUNICATIONS, 48 (1). pp. 103-111. ISSN 0133-3720 (print), 1788-9170 (online)

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Abstract

The multitude of agronomic merits of a traditionally tall and photosensitive japonica rice landrace C14-8 has enabled its popularity in the tropical Andaman and Nicobar Islands, India. However, we noticed distinct variation for grain husk colour in this culture. Field evaluation of four grain husk color selections over 4 years across three major rice growing islands revealed signifcant variation for agro-morphological traits studied. In the overall population, harvest index was identifed as the potent selectable trait for indirect selection. Through AMMI stability analysis, the environmental, G×E interaction and genotype efects were recorded as 24.4%, 12.5% and 12.3%, respectively. The highest positive genotypic index was recorded at C14- 8-11-108 (0.39) followed by C14-8-11-113 (0.29) and C14-8-11-91 (0.20) which also out-yielded the original population by about 20% across years thus indicating the consistency and favorability of these selections under marginal ecosystem. The fndings of this paper will be useful for the breeding and conservation perspectives of such unique germplasm having climatically adaptive traits under marginal ecosystems.

Item Type: Article
Additional Information: MTA KFB támogatási szerződés alapján archiválva
Uncontrolled Keywords: Genotypic index, Intra-varietal variation, Landrace, Stability analysis
Subjects: Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia > QH3015 Molecular biology / molekuláris biológia
S Agriculture / mezőgazdaság > S1 Agriculture (General) / mezőgazdaság általában
Depositing User: Katalin Andódy
Date Deposited: 20 Feb 2023 15:28
Last Modified: 20 Feb 2023 15:28
URI: http://real.mtak.hu/id/eprint/159519

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