Molecular Breeding for Rainfed Lowland Rice in the Mekong Region

By T. Toojinda, S. Tragoonrung, Apichart Vanavichit, J. L. Siangliw, Nathinee Pa-In, J. Jantaboon, M. Siangliw, S. Fukai. 2005

91 citations recorded by the source corpus.

Abstract In the past 20 years, the rice-breeding program in Thailand had little success in developing new cultivars to replace Kao Dawk Mali 105 (KDML105) and Kao Khor 6 (RD6) for the rainfed lowland rice environments. The main reason for the poor adoption of new cultivars by farmers is the susceptibility to diseases and unacceptable grain qualities. The conventional breeding program also takes at least 15 years from initial crossing to the release of new cultivars. A new breeding strategy can be established to shorten the period for cultivar improvement by using marker-assisted selection (MAS), rapid generations advance (RGA), and early generation testing in multi-locations for grain yield and qualities. Four generation of MAS backcross breeding were conducted to transfer genes and QTL for bacterial blight resistance (BLB), submergence tolerance (SUB), brown plant hopper resistance (BPH) and blast resistance (BL) into KDML105. Selected backcross lines, introgressed with target gene/QTL, were tolerant to SUB and resistant to BLB, BPH and BL. The agronomic performance and grain quality of these lines were as good as or better than KDML105.

Subfields: Genetics, Plant Science

View Paper: https://www.semanticscholar.org/paper/15268086d8e1185166975eb3e6c131f05139e94a

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Citations in the corpus

Drought Resistance Improvement in Rice: An Integrated Genetic and Resource Management Strategy (2011, background): “・Identifi cation of varieties and breeding lines with high drought resistance for use as donors in breeding and gene discovery (Verulkar et al. 2010; Ouk et al., 2006; Toojinda et al., 2005; http://koios.generationcp.org/ drought).”
Marker assisted backcross breeding to improve cooking quality traits in Myanmar rice cultivar Manawthukha (2009, methodology): “The efficiency of molecular markers for the improvement of quality traits has been successfully utilised in previous studies (Liu et al., 2006; Toojinda et al., 2005; Zhang, 2007; Zhou et al., 2003).”
Development of rice introgression lines with brown planthopper resistance and KDML105 grain quality characteristics through marker-assisted selection (2009, background): “Improvement of good cooking and eating cultivars through MAS has been intensively applied in rice breeding programs throughout Asian countries (Liu et al., 2006; Toojinda et al., 2005; Zhang et al., 2005; Zhang, 2007; Zhou et al., 2003).”