RICE SCIENCE ›› 2010, Vol. 17 ›› Issue (3): 235-242 .DOI: 10.1016/S1672-6308(09)60022-6

• Research Paper • Previous Articles     Next Articles

Plant Type and Its Effects on Canopy Structure at Heading Stage in Various Ecological Areas for a Two-line Hybrid Rice Combination, Liangyoupeijiu

LU Chuan-gen1, HU Ning2, YAO Ke-min2, XIA Shi-jian1, QI Qing-ming1   

  1. 1)Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; 2)College of Applied Meteorological Science, Nanjing University of Information Science and Technology, Nanjing 210044, China
  • Received:2009-08-30 Online:2010-09-28 Published:2010-09-28
  • Contact: LU Chuan-gen
  • Supported by:
    the National Natural Science Foundation of China (Grant No. 30370830).

Abstract: A two-line hybrid rice combination, Liangyoupeijiu, was used to estimate several factors of plant type, and environmental models for these factors at the heading stage were established using the data of eight ecological experimental sites in 2006 and 2007. According to climatic data from 1951 to 2005, the differences in those factors and their effects on plant canopy were analyzed for four rice cropping areas in China, including South China, the middle-lower reaches of the Yangtze River, Sichuan Basin, and river valley in Yunnan, China. The thickness of leaf layer (the distance from pulvinus of the third leaf from the top to the tip of flag leaf) and distribution of leaf area could be used as candidate indices for the plant type of a rice canopy.

Key words: hybrid rice, plant type, model, ecological area, canopy structure, index