Developing climate-resilient rice varieties (BRRI dhan97 and BRRI dhan99) suitable for salt-stress environments in Bangladesh.

Autor: Debsharma SK; Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Rahman MA; Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Khatun M; Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Disha RF; Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Jahan N; Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Quddus MR; Hybrid Rice Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Khatun H; Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Dipti SS; Grain Quality and Nutrition Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Ibrahim M; Rice Farming System Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Iftekharuddaula KM; Plant Breeding Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh., Kabir MS; Director General, Bangladesh Rice Research Institute, Gazipur, Bangladesh.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2024 Jan 19; Vol. 19 (1), pp. e0294573. Date of Electronic Publication: 2024 Jan 19 (Print Publication: 2024).
DOI: 10.1371/journal.pone.0294573
Abstrakt: Salinity variations are the main reason for rice yield fluctuations in salt-prone regions throughout the dry season (Boro season). Plant breeders must produce new rice varieties that are more productive, salt tolerant, and stable across a variety of settings to ensure Bangladesh's food sustainability. To assess the yield and stability, we used fifteen rice genotypes containing two tolerant checks BRRI dhan67, Binadhan-10 and the popular Boro rice variety BRRI dhan28 in different salinity "hotspot" in three successive years followed by additive main effects and multiplicative interaction (AMMI) model utilizing a randomized complete block (RCB) design with two replications. Parents selection was done based on estimated breeding values (EBVs). Eight parents with high EBVs (IR83484-3-B-7-1-1-1, IR87870-6-1-1-1-1-B, BR8992-B-18-2-26, HHZ5-DT20-DT2-DT1, HHZ12-SAL2-Y3-Y2, BR8980-B-1-3-5, BRRI dhan67, and Binadhan-10) might be used to develop new segregating breeding materials. Based on farmer preferences and grain acceptability, three genotypes (IR83484-3-B-7-1-1-1, HHZ5-DT20-DT2-DT1, and HHZ12-SAL2-Y3-Y2) were the winning and best ones. The above three genotypes in the proposed variety trial showed significantly higher yields than the respective check varieties, high salinity tolerance ability, and good grain quality parameters. Among them, HHZ5-DT20-DT2-DT1 and IR83484-3-B-7-1-1-1 harbored eight and four QTL/genes that regulate the valuable traits revealed through 20 SNP genotyping. Finally, two genotypes IR83484-3-B-7-1-1-1 and HHZ5-DT20-DT2-DT1 were released as high salinity-tolerant rice varieties BRRI dhan97 and BRRI dhan99, respectively in Bangladesh for commercial cultivation for sustaining food security and sustainability.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Debsharma et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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