Comparative efficiency of irradiation and its recurrent mutation on induced variability and population characteristics in rice (Oryza sativa L.)

  • D. V. Sushmitharaj, P. Arunachalam, C. Vanniarajan, J. Souframanien and E. Subramanian Agricultural College and Research Institute, TNAU, Madurai

Abstract

The present study was carried out to elucidate the mutagenic efficiency of gamma rays (100 Gy, 150 Gy), electron beam (100 Gy, 150 Gy) used alone and in combination with EMS (30mM) as a recurrent treatment in the subsequent generation of Anna (R) 4 rice cultivar. The study was aimed to analyse the induced genetic variability, mean performance as well as population characteristics for various quantitative traits in M2 generation. The mutant lines were selected based on earliness, grain shape and yield.  In general, bidirectional shift without any uniform trend was observed for all the traits except productive tillers per plant and grain weight. Recurrent EMS approach had no significant effect on earliness, however, it had significant effect on reduction of plant height (8.19 %) and productive tillers per plant (25.27 %) in EB 150Gy + EMS 30mM. Whereas 150 Gy gamma irradiation had increased effect on grains per panicle (21.99 %), panicle weight (34.73 %) and grain yield per plant (9.77 %). Though selection was exercised for desirable traits, co-efficient of variation was still higher for productive tillers per plant (31.90 %), grains per panicle (30.20 %), panicle weight (30.87 %) and grain yield per plant (31.55 %). From the mean performance and population characteristics, it is concluded that recurrent EMS mutagenic approach was less efficient than irradiation for induction of desirable changes in earliness, grain shape, grain yield and other quantitative traits.  

 

Published
17-06-2019
How to Cite
D. V. Sushmitharaj, P. Arunachalam, C. Vanniarajan, J. Souframanien and E. Subramanian
Comparative efficiency of irradiation and its recurrent mutation on induced variability and population characteristics in rice Oryza sativa L.. 2019. Electronic Journal of Plant Breeding, 10 2, 542-551. Retrieved from https://www.ejplantbreeding.org/index.php/EJPB/article/view/3222
Issue
Vol 10 No 2 (2019): EJPB
Section
Research Article

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.