Field evaluation, root morphology and molecular marker analysis of selected F2/F3 plant progenies derived from crosses between basmati and aerobic rice genotypes
KrishiKosh
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Title |
Field evaluation, root morphology and molecular marker analysis of selected F2/F3 plant progenies derived from crosses between basmati and aerobic rice genotypes
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Creator |
Promila
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Contributor |
Jain, R.K.
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Subject |
Aerobic rice, Basmati, BAD2
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Description |
Experiments were conducted to evaluate segregating Pusa 1121 (Basmati) x MAS25 (aerobic) F4 and Pusa Basmati 1460 (Basmati) x MASARB25 (aerobic) F3 population for various physiomorphological and/or root traits and allelic diversity for BAD2 (aroma) gene and 17 microsatellite markers linked to the root traits. In Pusa 1121 x MAS25 F4 population and Pusa Basmati 1460 (Basmati) x MASARB25 (aerobic) F3 populations, enormous variation was observed for plant height, panicle length, effective number of tillers per plant, seeds per panicle, percent seed setting , root length, root thickness, fresh and dry root weight, 1000 grain weight, grain length/breadth ratio and yield per plant. Out of 62 plants derived from two crosses, 29 plants had Basmati specific allele (homozygous condition), 14 plants had indica (aerobic) allele (homozygous condition) and 19 plants had both Basmti and aerobic allele (heterozygous condition) at BAD2 aroma locus. The NTSYS-pc UPGMA cluster tree analysis led to the grouping of 27 Pusa Basmati 1460 x MASARB25 F3 plants in two major groups at a similarity coefficient of 0.5. Major group I consisted of Pusa Basmati 1460 and 25 F3 plants while the major group II had MASARB25 and 2 F3 plants. A number of promising F3 and F4 plants have been selected, which had higher grain yield, root length and biomass greater than MAS25 and Basmati specific allele at BAD2 locus (either in homozygous or heterozygous condition) for further progeny analysis. Most of these selected plants also possessed QTLs identified earlier for grain yield and root length on chromosome 1 and 8 respectively. |
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Date |
2016-09-10T12:14:52Z
2016-09-10T12:14:52Z 2013 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/76357
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Language |
en
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Format |
application/pdf
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Publisher |
CCSHAU
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