Assessment of drought tolerance in Nagina 22 mutants of rice using Poly Ethylene Glycol (PEG)
Abstract
A laboratory experiment was conducted to screen 500 EMS induced mutants of Nagina22 using low molecular osmotic PEG-6000. The analysis of variance showed that all ten characters showed significant variation at 1% probability level. Nagina22 was screened under six moisture regimes as 0, -2, -4, -6, -8 and -10 bars of PEG-6000 and -6 bars was fixed as optimum concentration for mutant screening. Results of correlation revealed that relative seedling vigour showed positive significant correlation with all characters studied except root length stress index and relative root number. Based on PCA, emergence percentage, promptness index and seedling vigour was considered as selection criteria for selecting drought tolerant mutants under moisture stress. N22-PDT-17 and N22-PDT-64 recorded highest value for all the characters studied except number of roots than Nagina22. Hence, these two mutants were selected as better mutants with altered drought response and could be further validated under natural drought environment.
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.
