Identifying genetic resources and QTL for cold tolerance in rice

Ye, C., Fukai, S., Godwin, I., Reinke, R., Snell, P. and Koh, H. (2009). Identifying genetic resources and QTL for cold tolerance in rice. In: Edilberto Redona, Proceedings of the Joint 14th Australasian Plant Breeding Conference and 11th SABRAO Congress. 14th Australasian Plant Breeding Conference (APBC) and the 11th Congress of the Society for the Advancement of Breeding Research in Asia and Oceania (SABRAO), Cairns, Australia, (1-7). 10-14 August 2009.

Author Ye, C.
Fukai, S.
Godwin, I.
Reinke, R.
Snell, P.
Koh, H.
Title of paper Identifying genetic resources and QTL for cold tolerance in rice
Conference name 14th Australasian Plant Breeding Conference (APBC) and the 11th Congress of the Society for the Advancement of Breeding Research in Asia and Oceania (SABRAO)
Conference location Cairns, Australia
Conference dates 10-14 August 2009
Proceedings title Proceedings of the Joint 14th Australasian Plant Breeding Conference and 11th SABRAO Congress   Check publisher's open access policy
Journal name SABRAO Journal of Breeding and Genetics   Check publisher's open access policy
Place of Publication Bangkok, Thailand
Publisher Society for the Advancement of Breeding Researches in Asia and Oceania
Publication Year 2009
Sub-type Fully published paper
ISSN 1029-7073
Editor Edilberto Redona
Volume 41
Issue Supp.
Start page 1
End page 7
Total pages 7
Collection year 2010
Language eng
Abstract/Summary Low temperature is a common production constraint in rice cultivation in Australia and many other temperate countries. To improve the cold tolerance of rice varieties, we have evaluated the cold tolerance of 17 rice varieties from different countries at germination, seedling, booting and flowering stages. Three varieties from China (B55, Lijianghegu, Banjiemang) and one from Hungary (HSC55) showed consistent tolerance to low temperature at all growth stages. These varieties are potentially important gene donors for breeding and genetic studies. Australian variety Amaroo is tolerant to low temperature at the seedling stage, while Quest is tolerant at seedling and flowering stages. The cold tolerance of the 17 rice varieties assessed at different growth stages was correlated. Based on the cold tolerance of the varieties at different growth stages, variety Reiziq was crossed with Lijianghegu. The F2 and BC1F1 populations were developed for QTL mapping. Among the screened 373 SSR and 325 STS primers, 53 SSR (15%) and 36 STS (11%) primers showed polymorphism between RZQ and LJHG. One QTL (qCTB-10-2a) was identified to be associated with cold tolerance at booting stage on short arm of chromosome 10. The QTL could explain 20.5% of the total genetic variation with -14.4% addictive and 7.5% dominant effect for spikelet fertility after low temperature treatment.
Subjects 820402 Rice
070399 Crop and Pasture Production not elsewhere classified
Keyword Rice
Cold tolerance
Growth stage
Quantitative trait loci
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Proceedings of the Joint 14th Australasian Plant Breeding Conference and 11th SABRAO Congress held on August 9-14, 2009 at Cairns Convention Center, Cairns Australia were published in a special issue (Special Supplement August 2009) of the journal as CD-ROM.

 
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Created: Fri, 23 Apr 2010, 13:13:28 EST by Kaye Hunt on behalf of School of Land, Crop and Food Sciences