• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jgen/093/03/0683-0688

    • Keywords

       

      rice; P-deficiency tolerance; PSTOL1; Gobindabhog.

    • Abstract

       

      Phosphate availability is a major factor limiting tillering, grain filling vis-à-vis productivity of rice. Rice is often cultivated in soil like red and lateritic or acid, with low soluble phosphate content. To identify the best genotype suitable for these types of soils, P acquisition efficiency was estimated from 108 genotypes. Gobindabhog, Tulaipanji, Radhunipagal and Raghusail accumulated almost equal amounts of phosphate even when they were grown on P-sufficient soil. Here, we have reported the presence as well as the expression of a previously characterized rice gene, phosphate starvation tolerance locus (PSTOL1) in a set of selected genotypes. Two of four genotypes did not show any detectable expression but carried the gene. One mega cultivar, Swarna did not possess this gene but showed high P-deficiency tolerance ability. Increase of root biomass, not length, in P-limiting situations might be considered as one of the selecting criteria at the seedling stage. Neither the presence of PSTOL1 gene nor its closely-linked SSR RM1261, showed any association with P-deficiency tolerance among the 108 genotypes. Not only this, but the presence of PSTOL1 in recombinant inbred line (RIL) developed from a cross between Gobindabhog and Satabdi, also did not show any linkage with P-deficiency tolerance ability. Thus, before considering PSTOL1 gene in MAB, its expression and role in P-deficiency tolerance in the donor parent must be ascertained.

    • Author Affiliations

       

      Arijit Mukherjee1 Sutanu Sarkar1 Amrita Sankar Chakraborty1 Roshan Yelne2 Vinay Kavishetty1 Tirthankar Biswas3 N. Mandal2 Somnath Bhattacharyya1

      1. Department of Genetics, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia 741 252, India
      2. Department of Biotechnology, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia 741 252, India
      3. Department of Genetics and Plant Breeding, College of Agriculture, Lembucherra, Tripura 799 210, India
    • Dates

       
    • Supplementary Material

       
  • Journal of Genetics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.