RICE SCIENCE

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Flower Development and Photoperiodic Control of Flowering in Rice

  1. 1College of Agronomy, Anhui Agricultural University, Hefei 230036, China; 2Institute of Crop Science / National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Online:2013-03-28 Published:2013-01-30
  • Contact: SHI Ying-yao (shiyy123@163.com)
  • Supported by:

    The study was funded by the National High Technology Research and Development Program from the Ministry of Science and Technology of China (Grant No. 2010AA101806), and the Bill & Melinda Gates Foundation (Grant No. OPP51587).

Abstract:

Floral transition, which is referred to as a plant’s transition from vegetative stage to reproductive stage, is considered to be a critical developmental switch in higher plants, for a timely flowering is a major factor of reproductive success. Endogenous and environmental cues, such as photoperiod, light quality, plant hormones concentrations and temperature, provide information to the plants whether the environment is favorable for flowering. These cues promote, or prevent, flowering through a complex genetic network, mediated by a careful orchestration of temporal and spatial gene expression. One of such cues is photoperiod. Rice (Oryza sativa L.) serves as a powerful model species for the understanding of flowering in higher plants, including flower development and photoperiodic control of flowering. In this review, we overviewed and discussed the flower development and its model. We also overviewed the photoperiodic pathways in rice flowering control, and summarized the pathways at molecular level.

Key words: rice, flowering time gene, floral transition, flower development, photoperiod