Multivariate analysis of morpho-physiological traits in bread wheat genotypes under terminal heat stress
Terminal heat stress has great impact on the quantity and quality of bread wheat that ultimately pose a serious concern about the food security. The presence of the genetic variability and suitable selection criteria is imperative for screening of genotypes for heat tolerance. Therefore, 60 advanced breeding lines and four standard checks were evaluated for morpho-physiological traits under late sown condition to understand the importance of the principal component analysis in reduction of the large correlated data into few major principal components that account for maximum genetic variability. Out of twenty principal components, only three were retained having 67.10% contribution towards total variability on the basis of eigen values and scree plot. Grain yield (0.995), days to heading (0.912) and plant height (0.752) were having maximum positive loading in the first, second and third principal component respectively. Therefore, principal component analysis holds great promise in the crop improvement programme.
Keywords: terminal heat stress, wheat, genetic variability, principal component and scree plot
Multivariate analysis of morpho-physiological traits in bread wheat genotypes under terminal heat stress. Electronic Journal of Plant Breeding, 13 4, 1180-1186. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4519
It 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.