Quantitative trait loci (QTLs) for potassium chlorate resistance and low temperature tolerance in seedling stage in rice (Oryza sativa L.)

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Published: Nov 25, 2012
DOI: https://doi.org/.
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Keywords:
Genome region, low temperature tolerance, potassium chlorate resistance, quantitative trait locus,rice

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Pei Sun
Department of Plant Genetics and Breeding, Collage of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Fengxia Liu
Department of Plant Genetics and Breeding, Collage of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Lubin Tan
Department of Plant Genetics and Breeding, Collage of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Zuofeng Zhu
Department of Plant Genetics and Breeding, Collage of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Yongcai Fu
Department of Plant Genetics and Breeding, Collage of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Chuanqing Sun
Department of Plant Genetics and Breeding, Collage of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Hongwei Cai
Department of Plant Genetics and Breeding, Collage of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China

Abstract

An F8 recombinant inbred lines (RIL) population was used to identify quantitative trait loci (QTLs) for potassium chlorate (KClO3) resistance and low temperature tolerance (LTT), two key physiological traits to distinguish rice subspecies, indica and japonica. Four traits were measured for KClO3 resistance including shoot length, root length, shoot length and root length ratios of treatment and control conditions, and four traits for LTT including shoot length, root length and germination rate in 15o and 28o. A total of six QTLs were identified on chromosomes 2, 4, 7 and 10 for KClO3, including a major QTL qSLratio-2, which accounted for 40% of the phenotypic variance. On the other hand, a total of four QTLs for LTT were identified on chromosomes 2 and 4. These results will be useful in marker-assisted selections for these two important traits.

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How to Cite
Sun, P., Liu, F., Tan, L., Zhu, Z., Fu, Y., Sun, C., & Cai, H. (2012). Quantitative trait loci (QTLs) for potassium chlorate resistance and low temperature tolerance in seedling stage in rice (Oryza sativa L.). INDIAN JOURNAL OF GENETICS AND PLANT BREEDING, 72(04), 405–414. https://doi.org/.
Issue
Vol. 72 No. 04 (2012): Indian Journal of Genetics and Plant Breeding
Section
Research Article
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