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Bi-environmental evaluation of oat (Avena sativa L.) genotypes for yield and nutritional traits under cold stress conditions using multivariate analysis

Published online by Cambridge University Press:  03 June 2024

Saika Nabi ,
Shamshir ul Hussan Open the ORCID record for Shamshir ul Hussan [Opens in a new window] ,
Tawqeer Nabi ,
Asif B. Shikari ,
Zahoor Ahmad Dar Open the ORCID record for Zahoor Ahmad Dar [Opens in a new window] ,
N. S. Khuroo ,
Ajaz Ahmad Lone ,
P. A. Sofi ,
Rahila Amin  and
M. Altaf Wani Open the ORCID record for M. Altaf Wani [Opens in a new window]
Saika Nabi
Affiliation:
Division of Genetics and Plant Breeding, Faculty of Agriculture, SKUAST-Kashmir, Srinagar 193201, India
Shamshir ul Hussan
Affiliation:
Dryland Agricultural Research Station, Rangreth SKUAST-Kashmir, Srinagar 191132, India
Tawqeer Nabi
Affiliation:
Division of Agricultural Statistics, Faculty of Horticulture, SKUAST-Kashmir, Srinagar 190025, India
Asif B. Shikari
Affiliation:
Division of Genetics and Plant Breeding, Faculty of Agriculture, SKUAST-Kashmir, Srinagar 193201, India
Zahoor Ahmad Dar
Affiliation:
Dryland Agricultural Research Station, Rangreth SKUAST-Kashmir, Srinagar 191132, India
N. S. Khuroo
Affiliation:
Dryland Agricultural Research Station, Rangreth SKUAST-Kashmir, Srinagar 191132, India
Ajaz Ahmad Lone
Affiliation:
Dryland Agricultural Research Station, Rangreth SKUAST-Kashmir, Srinagar 191132, India
P. A. Sofi
Affiliation:
Division of Genetics and Plant Breeding, Faculty of Agriculture, SKUAST-Kashmir, Srinagar 193201, India
Rahila Amin
Affiliation:
Division of Genetics and Plant Breeding, Faculty of Agriculture, SKUAST-Kashmir, Srinagar 193201, India
M. Altaf Wani*
Affiliation:
Division of Genetics and Plant Breeding, Faculty of Agriculture, SKUAST-Kashmir, Srinagar 193201, India
*
Corresponding author: M. Altaf Wani; Email: wani.altaf100@gmail.com
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Abstract

Oat being a rabi/winter crop in Kashmir, experiences extremely low temperatures which has detrimental effects on its growth and development. Therefore, this study was designed to evaluate a set of 130 oat genotypes in multi-location trials across temperate conditions of Kashmir valley from 2018 to 2022. From the preliminary data of 56 genotypes, including five checks, were selected and evaluated for nutritional and yield attributing traits under cold stress conditions at two locations. The results demonstrated significant genetic variation and high heritability for majority of traits, except for days to 50% flowering, days to maturity and dry fodder. Positive correlations were observed between green fodder yield and other traits, indicating their potential for enhancing yield. Principal component analysis identified four principal components that accounted for 69.87% of the total variation. Cluster analysis categorized the genotypes into two main clusters and six sub-clusters. Frost damage assessment was conducted at tillering stage after the snow melted in late January 2021 and 2022 using cold tolerance rating scale and subsequently tested for chilling injury through an electrolyte leakage test. From field and lab data analysis, five most promising cold tolerant, nutritious and high-yielding genotypes were identified. These genotypes have significant potential for utilization in future breeding programmes to improve cold tolerance in cultivated oats within the Kashmir valley thus promoting agricultural productivity and sustainability. The outcomes also provide valuable insights into the genetic variation, heritability, genotype-by-environment interactions, correlations and cold tolerance of oat genotypes in Kashmir.

Keywords

cold tolerancedual purposefodderG × E interactionoats
Type
Research Article
Information
Plant Genetic Resources , First View , pp. 1 - 9
Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of National Institute of Agricultural Botany

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