Identification of Rice Genotypes Carrying the Pup1 Locus as Potential Donors for Phosphorus Deficiency Tolerance Breeding in Southern India
Abstract
Phosphorus deficiency is a major constraint for rice production. The Pup1 locus confers tolerance to low-P conditions. We screened 40 rice genotypes adapted to southern India using 10 Pup1 specific markers. Five genotypes (including Kasalath and IR64-Pup1 checks) showed the complete Kasalath-type haplotype. Three local genotypes (APO, Vandhana, Kalakeri) representing ~7.5% of the positive genotypes (excluding checks) carried the full Pup1 locus and are proposed as promising donors for marker-assisted breeding programs targeting phosphorus use efficiency in southern India.
Fields of Study & Subjects
Rice Cultivation and Yield Improvement
Genetic Mapping and Diversity in Plants and Animals
Plant nutrient uptake and metabolism
Publication details
- Journal / source
- International Journal of Plant & Soil Science
- Volume
- 38
- Issue
- 1
- Pages
- 114–123
- Publication date
- 10 January 2026
- Language
- EN