Linkage planning of QTL for agronomic and root qualities utilizing IB370 × MAS25 ( Oryza sativa L.)-F 2 population developed under water restricted conditions

In the existing investigation, experiments were carried out to assess the F 2 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 F 2 populations. A close examination of phenotypic correlation exhibited that in the F 2 population, root length was certainly matched up ( r = 0.496) with root thickness. A DNA fingerprinting catalog for the currently studied F 2 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 F 2 plants were also scrutinized and found in the homozygous or heterozygous state with high repetitions.