The richness of diversity in a core collection of bread wheat (Triticum aestivum L.)
Abstract
Diversity evaluation provides opportunity to assess genetically important distinct traits that will effectively contribute to improvement of genotypes. Assessing genetic diversity in a core collection is key to find out the ways to efficient utilization of genetic resource. Wheat cultivars spinning over a century were collected from the Indian Institute of Wheat & Barely Research (IIWBR), Karnal, made up of a core collection. The core set of data was analysed by multivariate methods. The experimental material consisted of ~100 genotypes which were evaluated in an Augmented Randomized Block Design. Quantitative characters like no. of grain per spike, no. of spikelet per spike, test weight and spike length were found to be the key yield contributing traits. Principal component analysis (PCA) and cluster analysis of eight quantitative characters and genotypes fall into three principal component and three cluster respectively. Based on these experiment first and third cluster genotypes have high associated with PCI and PCIII. These principal components were made by grouping them high yield contributing traits. Genotypes in these clusters have higher values for yield contributing traits then the total average of traits. Genotypes belonging to superior clusters could be considered to very useful to developing high yielding varieties and other breeding activities.
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.
