Mutation effectiveness and efficiency in kodo millet (Paspalum scrobiculatum L.)
DOI:10.37992/2024.1502.052
Abstract
Kodomillet is a staple food grain in semi-arid regions also known for its excessive free radical quenching capacity. Due to the cleistogamous flowering pattern, recombination breeding has limited scope in this crop. This study was formulated to induce genetic variation in kodo millet by induced mutagenesis involving two varieties, ATL 1 and CKMV 1. Seeds were irradiated with five different gamma-ray doses namely., 300 Gy, 400 Gy, 500 Gy, 600 Gy and 700 Gy, respectively and LD50 was determined based on reduction in root and shoot lengths. The gamma ray dosage and root and shoot lengths were observed to be inversely proportional. Chlorophyll mutants namely., Albino, Xantha, Xantha viridis, Chlorina and Striata were observed in all treatments except 700 Gy in both the genotypes in M1 generation. Mutagenic effectiveness and efficiency were calculated based on the frequency of chlorophyll mutations in M1 plants. Two early maturing novel mutants from ATL 1 and three high yielding mutants from CKMV 1 at 400 Gy dose and 500 Gy dose, respectively were isolated. Mutagenic treatments were efficient in creating genetic variation for morphological traits. These mutants would be useful in improvement of kodo millet.
Keywords: Chlorophyll mutants, Gamma rays, Kodo millet, Mutagenic effectiveness, efficiency
Mutation effectiveness and efficiency in kodo millet Paspalum scrobiculatum L.
. 2024. Electronic Journal of Plant Breeding, 15 2, 454-458. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4959It 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.
