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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
 
Creator Promila
 
Contributor Jain, R.K.
 
Subject Aerobic rice, Basmati, BAD2
 
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.
 
Date 2016-09-10T12:14:52Z
2016-09-10T12:14:52Z
2013
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76357
 
Language en
 
Format application/pdf
 
Publisher CCSHAU