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Acta Agron Sin ›› 2005, Vol. 31 ›› Issue (12): 1628-1633.

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Effect of Free-air CO2 Enrichment on Root Growth Dynamics of Japonica Rice (Oryza sativa L.) Cultivar Wuxiangjing 14

YANG Hong-Jian; YANG Lian-Xin; LIU Hong-Jiang; HUANG Jian-Ye; DONG Gui-Chun; ZHU Jian-Guo; WANG Yu-Long   

  1. Key Laboratory of Crop Cultivation & Physiology, Jiangsu Province, Yangzhou University, Yangzhou 225009, Jiangsu
  • Received:2004-10-23 Revised:1900-01-01 Online:2005-12-12 Published:2005-12-12
  • Contact: WANG Yu-Long

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Abstract: Increasing atmospheric CO2 concentrations are generally expected to enhance photosynthesis and growth and as a result substantially increase yields in C3 cereal crops. However, little is known about the effect of elevated CO2 on root growth of rice. To better understand the response of rice root system to elevated CO2 concentration, a free-air CO2 enrichment[FACE,200 μmol·mol-1 higher than Ambient(AMB)] experiment was conducted at Anzhen town, Jiangsu, China, to stud the root growth dynamics of rice, with japonica cultivar Wuxiangjing 14, in 2002-2003. the results showed that:(1)the number of adventitious roots per hole, the length of adventitious roots per hole, the roots volume per hole and the dry weight of roots per hole under FACE... ...

Key words: Rice, Free-air CO2 enrichment, Root system, Root growth dynamics

CLC Number: 

  • S511
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