RICE SCIENCE ›› 2010, Vol. 17 ›› Issue (1): 43-50 .DOI: 10.1016/S1672-6308(08)60103-1

• Research Paper • Previous Articles     Next Articles

Relationship Between Plant Type and Grain Quality of Japonica Hybrid Rice in Northern China

HAO Xian-bin1, 2, MA Xiu-fang2, HU Pei-song1, ZHANG Zhong-xu2, SUI Guo-min2, HUA Ze-tian2   

  1. 1)China National Rice Research Institute, Hangzhou 310006, China; 2)North Japonica Hybrid Rice Research and Development Center, Shenyang 110101, China
  • Received:2009-07-10 Online:2010-03-28 Published:2010-03-28
  • Contact: HU Pei-song

Abstract: Plant type and grain quality are two major aspects in rice breeding. Using canonical correlation analysis and canonical redundancy analysis, the relationship between plant type traits and rice grain quality traits was studied with 100 crosses derived from 10 sterile lines × 10 restorer lines. There was a complex relationship between parts of the traits of the two aspects. The angle of the 2nd leaf from the top and single panicle weight played important roles in plant type system and amylose content and grain length in grain quality system. The angle of the 2nd leaf from the top, plant height and single panicle weight had a great effect on grain quality traits, and amylose content, brown rice rate and translucency were easily influenced by plant type traits. Selection index model indicated that japonica hybrid rice in Northern China with good quality was characterized by broad flag leaf and 2nd leaf from the top, narrow and short 3rd leaf from the top, low plant height, short culm, long and more panicles and low single panicle weight.

Key words: japonica hybrid rice, plant type, grain quality, canonical correlation, selection index