Annals of Botany 91: 255-261, 2003
© 2003 Annals of Botany Company
Thai Jasmine Rice Carrying QTLch9 (SubQTL) is Submergence Tolerant
1 Rice Gene Discovery Unit, 2 BIOTEC, 3 DNA Technology Laboratory and 4 Department of Agronomy, National Center for Genetic Engineering and Biotechnology, Kasetsart University, Kampaengsaen Campus, Nakorn Pathom, Thailand
* For correspondence. Fax (66–34) 281093, e-mail apichart{at}dna.kps.ku.ac.th
Received: 6 August 2001; Returned for revision: 21 November 2001; Accepted: 21 February 2002
Submergence tolerance is an important agronomic trait for rice grown in South-East Asia, where flash flooding occurs frequently and unpredictably during the monsoons. Although mapping locations of one major and several minor quantitative trait loci (QTL) were known previously, improving submergence tolerance in agronomically desirable types of rice has not been achieved. KDML105 is jasmine rice widely grown in rain-fed lowland regions of Thailand. This cultivar is very intolerant of submergence stress. To improve submergence tolerance in this cultivar, three submergence-tolerant cultivars, FR13A, IR67819F2-CA-61 and IR49830-7-1-2-2, were cross-pollinated with KDML105. Transferring the major QTL for submergence tolerance was facilitated by four back-crossings to the recipient KDML105. Molecular markers tightly linked to the gene(s) involved were developed to facilitate molecular genotyping. We demonstrated that individuals of a BC4F3 line that retained a critical region on chromosome 9 transferred from tolerant lines were also tolerant of complete submergence while retaining all the agronomically desirable traits of KDML105. In addition, effects of secondary QTLch2 were detected statistically in back-cross progenies. Effects of secondary QTLch7 were not statistically significant. The close association between tightly linked markers of the tolerance locus on chromosome 9 and submergence tolerance in the field demonstrates the considerable promise of using these markers in lowland rice breeding programmes for selecting increased submergence tolerance.
Key words: Submergence tolerance, QTL analysis, plant breeding, back-crossing, rice (Oryza sativa L.), marker-assisted selection, graphical genotype.
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  N. Kawano, O. Ito, and J.-I. Sakagami Morphological and physiological responses of rice seedlings to complete submergence (flash flooding) Ann. Bot., January 1, 2009; 103(2): 161 - 169. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. M. Septiningsih, A. M. Pamplona, D. L. Sanchez, C. N. Neeraja, G. V. Vergara, S. Heuer, A. M. Ismail, and D. J. Mackill Development of submergence-tolerant rice cultivars: the Sub1 locus and beyond Ann. Bot., January 1, 2009; 103(2): 151 - 160. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. B. Jackson Ethylene-promoted Elongation: an Adaptation to Submergence Stress Ann. Bot., January 1, 2008; 101(2): 229 - 248. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. Lasanthi-Kudahettige, L. Magneschi, E. Loreti, S. Gonzali, F. Licausi, G. Novi, O. Beretta, F. Vitulli, A. Alpi, and P. Perata Transcript Profiling of the Anoxic Rice Coleoptile Plant Physiology, May 1, 2007; 144(1): 218 - 231. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 E. S. Ella and A. M. Ismail Seedling Nutrient Status before Submergence Affects Survival after Submergence in Rice Crop Sci., June 20, 2006; 46(4): 1673 - 1681. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. B. JACKSON and T. D. COLMER Response and Adaptation by Plants to Flooding Stress Ann. Bot., September 1, 2005; 96(4): 501 - 505. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. Xu, R. Deb, and D. J. Mackill A Microsatellite Marker and a Codominant PCR-Based Marker for Marker-Assisted Selection of Submergence Tolerance in Rice Crop Sci., January 1, 2004; 44(1): 248 - 253. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. J. W. VISSER, L. A. C. J. VOESENEK, B. B. VARTAPETIAN, and M. B. JACKSON Flooding and Plant Growth Ann. Bot., January 2, 2003; 91(2): 107 - 109. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. B. JACKSON and P. C. RAM Physiological and Molecular Basis of Susceptibility and Tolerance of Rice Plants to Complete Submergence Ann. Bot., January 2, 2003; 91(2): 227 - 241. [Abstract] [Full Text] [PDF]
|
|