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Linkage planning of qtl for agronomic and root qualities utilizing ib370 × mas25 (oryza sativa l.)‑f2 population developed under water restricted conditions

  • Authors Details :  
  • Rajesh Yogi Naveen Kumar Ravinder Kumar Mukesh Kumar

Journal title : Acta Physiologiae Plantarum

Publisher : Springer Science and Business Media LLC

Online ISSN : 1861-1664

Journal volume : 45

Journal issue : 5

415 Views Original Article

Abstract In the existing investigation, experiments were carried out to assess the F2 population’s resultant of crosses between improved Basmati 370 and MAS25 for various agronomical and root traits cultivated under aerobic water conditions. Large variations for grain yield, root length, root dry biomass, root thickness and length/breadth ratio of grain have been displayed in segregating F2 populations. A close examination of phenotypic correlation exhibited that in the F2 population, root length was certainly matched up (r = 0.496) with root thickness. A DNA fingerprinting catalog for the currently studied F2 generation was arranged using 61 polymorphic SSR markers. Composite Interval Mapping (CIM) inspection with WinQTL cartographer version 2.5 disclosed 13 putative QTL (Quantitative Trait Loci), out of which 6 QTL were for root characters 7 QTL for agronomical characters situated on 1, 2, 3, 8 and 10 chromosomes. The QTL documented in the above-said generation, some promising F2 plants were also scrutinized and found in the homozygous or heterozygous state with high repetitions.

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DOI : https://doi.org/10.1007/s11738-023-03547-2

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