23 / 23
Page 63
allied
academies
August 17-18, 2017 | Toronto, Canada
ANNUAL BIOTECHNOLOGY CONGRESS
Ann Biol Sci, 2017
ISSN: 2348-1927
P
AU 201, a very high yielding medium duration rice
variety was released for cultivation in Punjab state in
2007, however, due to red pericarp color; the variety did
not meet the specification of Food Corporation of India and
was officially withdrawn in the year 2010 for cultivation in
Punjab. Due to high yield potential, this variety covered
more than 20% area in Punjab in two years after its release.
In addition to red pericarp, this variety had only one bacterial
blight resistance gene xa13. The red aleurone is due to single
gene, designated as Rc7 and is located on chromosome 7.
Both these genes are cloned and gene based primers have
been designed. Due to consistent demand from farmers for
improvement of this variety, we have improved this variety
through MAS by replacing Rc7 allele with recessive allele
rc7, and additional bacterial blight resistance gene Xa21.
A set of BC2F4 progenies selected for white grain color
and bacterial blight resistance having more than 90% of
the recurrent-parent genome were evaluated for yield and
yield components. Lines that significantly out-yielded the
recurrent parent and the check cultivars in station trials are
evaluated at multiple locations in national-level nurseries
for identifying the lines that could be released as varieties.
These lines, in addition to being released as cultivars, can
also be used as immediate donors for further improvement
of rice cultivars.
e:
rupinder261@gmail.comImprovement of rice variety PAU 201 through marker assisted selection for grain color and bacterial
blight resistance
Kaur Rupinder, Mangat GS
and
Singh Kuldeep
Punjab Agricultural University, India
Ann Biol Sci, 2017, 5:3
DOI: 10.21767/2348-1927-C1-003