Improving rice blast resistance by stacking of two broad spectrum resistance gene Pi9 and Pi54 in cultivar CO 51 through Marker Assisted Selection
Blast disease is a highly destructive disease and causes significant yield losses in rice. To address this issue, this study was chosen and focused on stacking of the Pi9along with CO 51+Pi54, which provide broad-spectrum resistance to blast pathogen. This study demonstrated that stacking of Pi9 along with CO 51+Pi54, against blast disease. An advanced breeding line was evaluated for blast disease resistance in a natural hotspot region over two growing seasons (kharif 2021 and kharif 2022). All 36 progenies revealed genetic potential of the stacked genes and exhibiting resistance to blast disease kharif 2021 and kharif 2022. The recurrent parent, CO 51 is moderately resistant while CO 51 with Pi9+Pi54 genes displayed a blast score 0<2, indicating strong resistance. Average yield of single plant has been increased 0.28% to 35.05% in NILs of CO 51. Maximum single plant yield of 35.05 % was recorded in progeny #20x6-5-11-121 which was followed by the progeny #20x6-5-11-125 (31.65%).
Keywords: Rice, Blast disease, gene stacking, Pi9, Pi54 and marker assisted selection
Improving rice blast resistance by stacking of two broad spectrum resistance gene Pi9 and Pi54 in cultivar CO 51 through Marker Assisted Selection. 2023. Electronic Journal of Plant Breeding, 14 2, 695-706. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4787
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.