Marker-assisted selection of aerobic x Basmati segregating genotypes under aerobic conditions in rice (Oryza sativa L.)

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dc.contributor.advisorJain, R.K.
dc.contributor.authorKhasa, Ritu
dc.date.accessioned2016-09-17T14:48:04Z
dc.date.available2016-09-17T14:48:04Z
dc.date.issued2014
dc.description.abstractExperiments were conducted to evaluate segregating Pusa 1121 (Basmati) x MAS25 (aerobic) F 5 , MASARB25 (aerobic) x Pusa Basmati 1460 (Basmati) F4 and Pusa 1121 x MAS26 (aerobic) F 2 populations for various physio-morphological and/or root traits and allelic diversity for BAD2 (aroma) gene and microsatellite markers linked to the traits promoting aerobic adaptation. In all the three populations, enormous variation was observed for plant height, panicle length, effective number of tillers per plant, root length, root thickness, fresh and dry root weight, 1000 grain weight, grain length/breadth ratio and yield per plant. In these populations, significant positive correlation was observed between yield per plant with plant height, effective no. of tillers per plant, length/breadth ratio, 1000 grain weight, root length and/or root biomass. In 93 plants of these three populations, 62 plants had Basmati specific allele in homozygous condition, 12 plants had indica allele (homozygous condition) and 19 plants had both Basmati and indica allele (heterozygous condition) at BAD2 aroma locus. The NTSYS-pc dendrogram and 2D PCA were prepared using allelic diversity data and F 2 /F4 /F5 populations were inclined towards MAS26, Pusa Basmati 1460 and MAS25 respectively. A number of promising F 2/F 4 and F 5 plants have been selected, which had higher grain yield, root length and biomass greater than MAS25, MAS26 and MASARB25 and Basmati specific allele at BAD2 locus (either in homozygous or heterozygous condition) for further progeny analysis. Most of these selected plants had the desired allele for the markers reported earlier to be linked with the aerobic adaptation traits (RM205 and RM547 for root length on chromosome 8 and 9 respectively)en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/77228
dc.language.isoenen_US
dc.publisherCCSHAUen_US
dc.subMolecular Biology and Biotechnology
dc.subjectAerobic rice, Basmati, BAD2en_US
dc.these.typeM.Sc
dc.titleMarker-assisted selection of aerobic x Basmati segregating genotypes under aerobic conditions in rice (Oryza sativa L.)en_US
dc.typeThesisen_US
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