Multivariate analysis among advanced breeding lines of rice (Oryza sativa L.) Under sub-tropical ecology of Jammu region of Jammu and Kashmir
DOI: 10.37992/2022.1304.179
Abstract
The present study aimed to determine the nature and extent of genetic divergence for agro-morphological and quality traits amongst advanced breeding lines of rice utilizing multivariate techniques. Based on the inter se D2 values, breeding lines were grouped into six non-overlapping clusters, indicating presence of diversity amongst the lines. Cluster I and Cluster II were found to be the largest clusters consisting of 14 and 9 genotypes, respectively, while, the remaining four clusters were mono-genotypic. The maximum inter-cluster distance was observed between cluster II and VI, while the maximum intra-cluster distance was recorded for cluster II. Breeding lines present in cluster II were observed to have highest cluster means for traits viz., plant height, total number of tillers per plant, amylose content, grain yield per plant and grain yield per plot indicating its superiority over rest of the clusters. Traits including grain yield per plot, grain yield per plant, days to maturity, 1000-grain weight, total number of tillers per plant and panicle length were observed to be the major contributors to genetic divergence. Principal component analysis extracted six principal components of which first five components viz., PC-I to PC-IV had eigen scores greater than one. This suggested that traits within these axis were of importance. Principal component analysis revealed that the traits viz., number of effective tillers per plant, grain yield per plot, plant height, panicle length and days to 50 per cent flowering contributed maximum towards genetic diversity.
Keywords: Rice, Genetic diversity and PCA analysis
Multivariate analysis among advanced breeding lines of rice Oryza sativa L. Under sub-tropical ecology of Jammu region of Jammu and Kashmir
. 2023. Electronic Journal of Plant Breeding, 13 4, 1387-1394. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4520It 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.
