Marker assisted selection for aromatic and semi-dwarf segregants in cross of aromatic Katarni ricePantnagar Journal of Research, Volume - 18, Issue - 3 ( September-December, 2020)
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Katarni Rice is the most prevalent, ceremonial and finest quality scented rice landrace of Bihar, India. Like Basmati, this aromatic rice is most preferred due to its flavour, palatability and popcorn like essence before and after cooking. However, it is low yielder (25-30 Q/ha) due to its tall and week stature and lodging tendency at the time of maturity. To overcome existing problems of Katarni rice, introgression of semi-dwarfing (sd1) gene from rice variety Rajendra Sweta was attempted with the help of marker assisted back crossing and present study is emphasizing on selection of dwarf and aromatic progenies in BC1F2 and F3 generation of Katarni x R. Sweta.51 plants in BC1F2 and 31 in F3 population were selected on the basis of 1.7% KOH sensory test for aroma. The segregation ratio of non-aromatic vs. aromatic plants in 325 BC1F2 plants was 3:1 confirming the monogenic inheritance of aroma. The selection of aromatic and semi-dwarf plants in both the population was further done through the trait specific markers for these traits in rice. The semi-dwarf plant height and early maturity of selected 49 aromatic plants in BC1F2 and 25 F3 plants of Katarni x R. Sweta advocated the utilization of markers in selection of desirable segregants.
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