Article abstract
Nature Genetics 40, 761 - 767 (2008)
Published online: 4 May 2008 | doi:10.1038/ng.143
Natural variation in Ghd7 is an important regulator of heading date and yield potential in rice
Weiya Xue1,2, Yongzhong Xing1,2, Xiaoyu Weng1, Yu Zhao1, Weijiang Tang1, Lei Wang1, Hongju Zhou1, Sibin Yu1, Caiguo Xu1, Xianghua Li1 & Qifa Zhang1
Abstract
Yield potential, plant height and heading date are three classes of traits that determine the productivity of many crop plants. Here we show that the quantitative trait locus (QTL) Ghd7, isolated from an elite rice hybrid and encoding a CCT domain protein, has major effects on an array of traits in rice, including number of grains per panicle, plant height and heading date. Enhanced expression of Ghd7 under long-day conditions delays heading and increases plant height and panicle size. Natural mutants with reduced function enable rice to be cultivated in temperate and cooler regions. Thus, Ghd7 has played crucial roles for increasing productivity and adaptability of rice globally.
- National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan 430070, China.
- These authors contributed equally to this work.
Correspondence to: Qifa Zhang1 e-mail: qifazh@mail.hzau.edu.cn
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