Revealing genetic variation and clustering pattern in upland rice using morpho-economic traits
Abstract
A set of 36 upland genotypes comprising 24 popular short duration ruling rice varieties and 12 mutants derived from cv. Mandakini and Zhu 11-26 was characterized for eight agro-economic traits including seed yield. The data were analysed following SAS software programme for estimation of Euclidian genetic distance and grouping of test genotypes. Cluster composition was set up for six clusters and the corresponding cluster means for eight morpho-economic traits were derived from mean performance of the test genotypes. Cluster I included all the four top yielding (3260-36kg/ha) test genotypes comprising one mutant of cv. Zhu 11-26 (ORT 39) and three mutants of cv. Mandakini (ORT 35, ORT 11, ORT 30). Besides, it was identified to be the most divergent cluster with high intra-cluster heterogeneity. Cluster II contained almost all popularly known drought tolerant cultivars e.g., Zhu 11-26, Saria, Vandana, Pathara and Vanaprava. Cluster V was highly distant from above clusters and included both the promising widely adaptable standard check varieties e.g., Khandagiri and Subhadra with average productivity more than 3000kg/ha.. The above highly divergent upland genotypes with distinct morphological diversity may be combined in hybridization programme for recovery of desirable transgressive segregants and can serve as potential parents to facilitate high resolution QTL mapping and validate candidate genes responsible for quantitatively agronomic characters.
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.
