Pyramiding of qDTY_1.1 and qDTY_3.1 into rice mega-variety Samba Mahsuri-Sub1: physiological performance under water deficit conditions.

ABSTRACT: Water deficit is a crucial factor causing huge loss to rice productivity. The present study aimed to develop a multiple stress tolerant genotype by pyramiding drought tolerant yield QTLs qDTY_1.1 and qDTY_3.1 into high yielding rice variety Samba Mahsuri Sub-1(SMS) through marker assisted pyramiding. To achieve this six introgression lines of SMS carrying qDTY_1.1 (SAB) were crossed with DRR-50, an Essentially Derived Variety of SMS carrying qDTY_3.1. The SAB lines are taller than SMS due to tight linkage between qDTY_1.1 and wild type SD-1. Therefore, F₂ generation of crosses were screened for recombinants between SD-1 and qDTY_1.1. Phenotyping of 1530 F₂ plants representing three F₂ popula

SUBMITTER: Rai M 

PROVIDER: S-EPMC10784446 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature