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Genetics, fertility behaviour and molecular marker analysis of a new TGMS line, TS6, in rice

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Relation http://oar.icrisat.org/979/
http://dx.doi.org/10.1111/j.1439-0523.2004.00975.x
 
Title Genetics, fertility behaviour and molecular marker analysis of a new TGMS line, TS6, in rice
 
Creator Latha, R
Thiyagaraja, K
Senthilvel, S
 
Subject Genetics and Genomics
 
Description The thermosensitive genic male sterility (TGMS) system has great
potential for revolutionizing hybrid rice production through simple,
less expensive and more efficient seed production technology. For the
successful utilization of this novel male sterility system, knowledge of
the breeding and fertility behaviour of a TGMS line is essential. In this
study, the fertility transformation behaviour, the critical fertility and
sterility temperatures and the mode of inheritance of male sterility were
studied for a new TGMS line, TS6, identified at Tamil Nadu
Agricultural University, Coimbatore, India. The pollen and spikelet
fertilities recorded on plants raised at fortnightly intervals revealed
that this line was completely sterile for 78 consecutive days (35/22 to
32/23�C, maximum/minimum temperatures) and reverted to fertile
when the temperature was 30/18�C. It remained fertile continuously
for 69 days and the maximum pollen and spikelet fertilities recorded
were 75 and 70%, respectively. The fertility was highly influenced by
daily maximum temperature followed by average and minimum
temperatures. It was not influenced by relative humidity, sunshine
hours or photoperiod. The critical temperature inducing sterility and
fertility was 26.7 and 25.5�C, respectively. The male sterility in TS6 was
inherited as a monogenic recessive in the F2 and BC1 populations of
TS6 · MRST9 as well as TS6 · IR68281B. Using bulked segregant
analysis on an F2 population of TS6 · MRST9, an RAPD marker,
OPC052962, was identified to be associated with TGMS in TS6.
 
Publisher Blackwell Publishing
 
Date 2004
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/979/1/PlantBreeding123_3_235-240_2004.pdf
Latha, R and Thiyagaraja, K and Senthilvel, S (2004) Genetics, fertility behaviour and molecular marker analysis of a new TGMS line, TS6, in rice. Plant Breeding, 123 (3). pp. 235-240.