| Autor: |
Valarmathi, Muthu, Sasikala, Ramasamy, Rahman, Hifzur, Jagadeeshselvam, Nallathambi, Kambale, Rohit, Raveendran, Muthurajan |
| Zdroj: |
Indian Journal of Plant Physiology; 20240101, Issue: Preprints p1-10, 10p |
| Abstrakt: |
Salinity is one of the major abiotic stress limiting rice productivity under marginal environments. The progress in development of salinity tolerant rice varieties is slow due to complex nature of tolerance mechanisms determining performance under salinity. In the present study, efforts were taken to generate NILs of a popular rice genotype Improved White Ponni exhibiting increased tolerance against salinity through marker assisted introgression of ‘Saltol’, a major effect QTL of FL478. IWP-SatolNILs exhibited enhanced tolerance against salinity under hydroponic conditions. MABB approach accelerated the development of NILs with high recovery of recurrent parent genome within 2–3 backcrosses. Genotyping and phenotyping of BC3F1progenies resulted in the identification of elite NILs of IWP harboring Saltolloci and possessing > 90% of recurrent parent genome recovery. Selected NILs viz., 5-35, 5-36 and 5-45 that carried the Saltolloci were screened under field conditions for their agronomic traits. NIL # 5-36 exhibited superior agronomic performance (58% increased yield over IWP under saline conditions) and superior grain/cooking quality traits than that of IWP. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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