Insights into yield stability: A comparative analysis of regression, AMMI indices and Biplot Methods in pearl millet
DOI: 10.37992/2024.1501.004
Abstract
Pearl millet is a vital crop in India cultivated across diverse agro-ecological zones. One of the primary challenges in millet farming is the absence of superior genotypes well-suited to local conditions. Hence, there is a need to develop pearl millet genotypes that exhibit high yield and stability to enhance production. With this regard, the study aimed to identify genotypes with high and stable yields across diverse seasons. Twenty-three genotypes were evaluated in four seasons in a randomized block design. Statistical analysis, including the Eberhart and Russell model, AMMI, and GGE biplot, were employed to assess genotype-environment interactions. The genotype ICMB 07999 was observed to have be stable with consistent mean yield, while PT 6679 , PT 7058 and PT 7054 were observed to have above-average stability. These findings were supported by AMMI biplots and various stability indices. GGE biplots revealed two mega-environments, from which Kharif seasons (mega environment 2) provided more informative assessments of genotype stability compared to summer seasons. Across all models and various parameters analysed, PT 6679 and PT 7058 emerged as stable inbreds with high mean seed yield. These inbreds could be tested further in larger environments for potential use in breeding program.
Keywords : Pearl millet, grain yield, stability analysis, AMMI Model
Insights into yield stability: A comparative analysis of regression, AMMI indices and Biplot Methods in pearl millet
. 2024. Electronic Journal of Plant Breeding, 15 1, 42-52. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/5039It is certified that:
- The corresponding author is fully responsible for any disputes arising due to the publication of his/her manuscript.
- The article has been seen by all the authors who are satisfied with its form and content.
- The sequence of names of authors in the by-line is as per their relative contribution to this experiment, giving due credit to all scientists who made notable contribution to it.
- All the authors fully understand that inclusion of any other co-authors or exclusion of any co-authors is not possible once the article has been submitted to the journal.
- The corresponding author takes full responsibility for this article.
- The address of the organization where the research was conducted is given.
- The article is exclusive for this journal, and the results reported here have not been sent (and will not be sent during its consideration by this journal) for publication in any other journal.
- Authors agree to abide by the objective comments of referees and do agree to modify the article into a short note as per the recommendation, for publication in the Electronic Journal of Plant Breeding.
- If published in Electronic Journal of Plant Breeding, the copyright of this article would vest with the Indian Society of Plant Breeders, who will have the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in it, and neither we nor our legal heirs will have any claims on royalty.
