Orginal Article

QTL Analysis for Heading Date in Rice (Oryza sativa L.) Under Different Temperatures and Light Intensities

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  • 1 Key Laboratory of Plant Function Genomics, Ministry of Education, Yangzhou University/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou 225009, China
    2Institute of Food Crops, Jiangsu Academy of Agricultural Sciences/Nanjing Branch of Chinese National Center for Rice Improvement, Nanjing 210014, China
*Corresponding author, E-mail: ricegb@yzu.edu.cn

Received date: 2015-11-18

  Revised date: 2016-01-07

  Online published: 2016-05-10

Abstract

QTLs for heading date were identified with 85 rice chromosome single segment substitution lines (CSSSLs) derived from Nipponbare as donor parent in the background of Guanglu’ai 4, for means comparisons between CSSSLs and the recipient parent Guanglu’ai 4 by one-way analysis of variance and Dunnett’s test. A total of 40 QTLs for heading date were identified on all 12 chromosomes under two different temperatures and light intensities with a significance of P≤0.001. Twenty-one QTLs for heading date were mapped in the two environments, 15 QTLs only in Nanjing, and four only in Sanya. Thirty-six QTLs were mapped in Nanjing, the additive effects of which ranged from 2.8 d to 15.7 d, the additive effect percentages from 3.8% to 21.1%; 25 QTLs were mapped in Sanya, the additive effect of which ranged from 1.8 to 12.1 d, the additive effect percentages from 1.7% to 11.3%. The results are important for the QTLs cloning and breeding of new high-quality rice variety in different environments.

Cite this article

Jun WANG, Jin-yan ZHU, Yong ZHOU, Jie YANG, Fang-jun FAN, Wen-qi LI, Fang-quan WANG, Wei-gong ZHONG, Guo-hua LIANG . QTL Analysis for Heading Date in Rice (Oryza sativa L.) Under Different Temperatures and Light Intensities[J]. Chinese Journal OF Rice Science, 2016 , 30(3) : 247 -255 . DOI: 10.16819/j.1001-7216.2016.5172

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