Assessing onion genotypes stability and potential in diverse Indian environments

The current study investigates how genotype by environment interaction (GEI) complicates superior cultivar selection in onion breeding. Employing a randomized block design with three replications, we assessed GEI effects on onion yield and identified adaptable, stable genotypes. The sensitivity of o...

Full description

Saved in:
Bibliographic Details
Published in:Cogent food & agriculture 2024-12, Vol.10 (1)
Main Authors: Gupta, Amar Jeet, Khade, Yogesh P., Benke, Ashwini P., Mainkar, Pawan, Gedam, Pranjali A., Mahajan, Vijay, Singh, Major
Format: Article
Language:English
Subjects:
Adaptability
Agriculture
Agriculture & Environmental Sciences
Agriculture and Food
Agronomy
Allium cepa
AMMI
Climatic conditions
Cluster analysis
Crop yield
Cultivars
Environmental changes
Environmental conditions
Environmental factors
GEI
genotype-environment interaction
Genotype-environment interactions
Genotypes
Horticulture
Interaction models
Manuel Tejada, Universidad de Sevilla, Spain
METs
Onions
phylogeny
Plant breeding
Sensitivity analysis
Stability
stable lines
Vegetables
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The current study investigates how genotype by environment interaction (GEI) complicates superior cultivar selection in onion breeding. Employing a randomized block design with three replications, we assessed GEI effects on onion yield and identified adaptable, stable genotypes. The sensitivity of onion genotypes to environmental changes significantly influences yield and quality, necessitating adaptability across diverse climatic conditions. We conducted multilocation trials evaluating 28 onion genotypes across four distinct locations, each representing varying environmental factors. Through phylogenetic analysis, genotypes were categorized into four clusters: cluster I (3), cluster II (4), cluster III (15), and cluster IV (6). Rigorous assessment of yield performance, employing additive main effects and multiplicative interaction models, particularly the AMMI model, revealed five genotypes demonstrating remarkable stability and potential across diverse environmental conditions: RO-1626, RO-1623, RO-1639, RO-1625, and RO-1627. Notably, genotypes from cluster II exhibited the highest marketable yield (277.06 q/ha) and total yield (295.66 q/ha), indicating adaptability to varied environmental conditions. These findings hold promise for breeding high-yielding onion varieties resilient to diverse environments, ensuring stability, adaptability, and quality in cultivation.
ISSN:2331-1932
2331-1932
DOI:10.1080/23311932.2024.2360606