Indian Society of Genetics & Plant Breeding

Introgression and molecular identification of quantitative trait loci for yield components in rice (Oryza sativa L.) variety Basmati 370

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To improve yield potential of export quality traditional
Basmati rice (Oryza sativa L.) variety Basmati 370, aTl
for yield components were introgressed from a high
yielding tropical Japanica cultivar Palawan through marker
assisted selection in BC2F2 population. Transgressive
segregants were observed for all traits. Enhancement over
recurrent parent for panicle weight (155.5%), panicle
number (141.5%), grains per panicle (35.7%), 100-grain
weight (35%), panicle length (20%) and for overall grain
yield was 168.7%. A set of 201 SSR markers was used
to identify and tag a total of 19 putative aTl by bulked
segregant analysis. Six putative aTl for panicle number
were tagged on chromosome 1, 2, 7, 8, and 12, five for
panicle weight on chromosome 1, 5, 7, 9 and 12, three
aTl for 100 grain weight 1, 6 and 7 and five aTl for
grain yield per plant on chromosome 1, 2, 7, 8 and 12
were detected. The aTl identified in this study will be
useful in molecular breeding of Basmati for improvement
of yield.  

Keywords: Rice, Basmati 370, AB-QTl analysis, SSR markers, yield components

Info

Year: 2007
Volume: 67
Issue: 1
 Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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