Publications by authors named "G Padmavathi"
This study aimed to identify QTL governing three traits of the resistance against the two planthoppers such as damage score (DS), nymphal survival (NS) and days to wilt (DW) using the 94 RIL population derived from the cross TN1/RP2068 utilizing 125 SSR and 1500 SNP markers. In case of the whitebacked planthopper (WBPH) five major and three minor QTL while for the brown planthopper (BPH) four major and seven minor QTL were identified to be associated with these three traits. Two major QTL, each on chromosomes 1 and 2, were responsible for DS and NS against WBPH accounted for 25% and 16% of the phenotypic variance (PVE).
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- Rice blast and bacterial leaf blight (BLB) significantly impact rice yields globally, causing losses of 20-50%, especially in regions like India with severe infections.* -
- The study involves the improved rice line TH-625-491, which carries multiple resistance genes against BLB and blast; these were validated and backcrossed to enhance resistance traits.* -
- Findings suggest a potential antagonistic effect between genes for bacterial blight and blast resistance, as certain gene combinations exhibited better resistance to blast alone compared to those including both types of resistance.*
Article Synopsis
- Salt stress is a major challenge for rice production, ranked just after drought, and addressing it through genetic enhancement is seen as a viable solution.
- Genetic breeding for salinity tolerance is difficult due to the complex genetics involved, which includes minor genes that interact with environmental factors and the loss of beneficial genetic variability during previous breeding efforts.
- Utilizing wild rice species can broaden the genetic base of modern rice cultivars, with ongoing research into their salinity tolerance mechanisms providing new opportunities for improving resilience against salt stress.
Pyramiding of qDTY and qDTY into rice mega-variety Samba Mahsuri-Sub1: physiological performance under water deficit conditions.
Physiol Mol Biol Plants
December 2023
Unlabelled: 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 and qDTY into high yielding rice variety Samba Mahsuri Sub-1(SMS) through marker assisted pyramiding. To achieve this six introgression lines of SMS carrying qDTY (SAB) were crossed with DRR-50, an Essentially Derived Variety of SMS carrying qDTY.
View Article and Find Full Text PDFRice is a highly consumed staple cereal cultivated predominantly in Asian countries, which share 90% of global rice production. Rice is a primary calorie provider for more than 3.5 billion people across the world.
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