<FONT face="Verdana">Competition   Between Rice and Barnyardgrass   at Different Generations under  FreeAir CO<SUB>2</SUB> Enrichment </FONT>

CHEN  Xi,ZHU Jian-guo,WANG Liang  ,JIANG De-lu  ,YAN Jian  ,XU Xiao-ming,ZENG Qing

doi:10.3969/j.issn.1001-7216.2010.01.17

Chinese Journal OF Rice Science >

2010 , Vol. 24 >Issue 1: 99 - 102

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.01.17

研究简报

Competition Between Rice and Barnyardgrass at Different Generations under FreeAir CO₂ Enrichment

Expand

1 College of Life Science, Nanjing Agricultural University, Nanjing 210095, China; 2State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; *Corresponding author, E-mail: xuxm@njau.edu.cn; qzeng@issas.ac.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-01-10

Fold

Abstract

Difference in the competition between rice and barnyardgrass at different growth stages and generations under FACE (Freeair CO2 enrichment, 580 μmol/mol) conditions was studied in the field. Under the FACE conditions and a 12∶1 transplanting ratio for rice and barnyardgrass, the growth and photosynthesis of the second generation rice (FR2) declined at both tillering and heading stages compared to its parent (FR0). The dry weight of FR2 decreased by 18.8% and 61.9% respectively compared with FR0. And the net photosynthetic rate of FR2 decreased by 22.4% and 27.8%, respectively, compared with FR0 at the tillering and heading stages. On the other hand, the dry weight of barnyardgrass progeny (FB2) decreased by 345% and 31.0%, and the net photosynthetic rate of FB2 decreased by 28.4% and 16.3%, respectively, compared to its parent (FB0) at the tillering and heading stages. After longterm exposure to high CO2 concentration, the competition between rice and barnyardgrass had changed gradually as the time of exposure was prolonged. The FR2/FB2 ratio for biomass and net photosynthetic rate increased by 26.6% and 8.3% at the tillering stage, whereas decreased by 44.1% and 13.8% at the heading stage, respectively, compared to the FR0/FB0 ratio. It indicates that the competition between rice and barnyardgrass progeny had acclimated to an elevated atmospheric CO2 concentration at the later growth stages.

Key words： air carbon dioxide enrichment; rice; barnyardgrass; progeny; photosynthesis; competition

Cite this article

CHEN Xi,ZHU Jian-guo,WANG Liang ,JIANG De-lu ,YAN Jian ,XU Xiao-ming,ZENG Qing . Competition Between Rice and Barnyardgrass at Different Generations under FreeAir CO₂ Enrichment [J]. Chinese Journal OF Rice Science, 2010 , 24(1) : 99 -102 . DOI: 10.3969/j.issn.1001-7216.2010.01.17

References

[1]Bowes G. Facing the inevitable, plants and increasing atmospheric CO2. Annu Rev Plant Physiol Plant Mol Biol, 1993,44: 309-332.

[2]Jenkins C L D. The CO2 concentrating mechanism of C4 photosynthesis: Bundle sheath cell CO2 concentration and leakage. Aust J Plant Physiol, 1997, 24: 543-547.

[3] Ziska L H.The impact of elevated CO2 on yield loss from a C3 and C4 weed in field grown soybean. Global Change Boic, 2000, 6: 899-905.

[4]国家农田调查组．中国农田杂草．杂草科学学报, 1989, 3(2): 1-5.

[5]Alberto M P, Ziska L H, Cervancia C R, et al. The influence of increasing carbon dioxide and temperature on competitive interactions between a C3 crop and a C4 weed. Aust J Plant Physiol, 1996, 23: 795-802.

[6]曾青, 朱建国，刘刚，等. 开放式空气CO2浓度增高条件下C3作物(水稻)与C4杂草(稗草)的竞争关系.应用生态学报, 2002, 13(10): 1231-1234.

[7]Zhu C W, Zeng Q, Lewis H, et al. Effect of nitrogen supply on carbon dioxideinduced changes in competition between rice and barnyardgrass (Echinochloa crusgalli ). Weed Sci, 2008, 56: 66-71.

[8]孙富芝, 朱建国, 曾青, 等. 大气CO2浓度升高条件下移栽水稻与不同出苗时间稗草竞争的响应差异.中国水稻科学, 2007, 21(2): 203-208.

[9]刘刚，韩勇，朱建国, 等. 稻麦轮作FACE系统平台:系统结构与控制.应用生态学报, 2002, 13(10): 1253-1258.

[10]韩勇, 刘钢, 朱建国. 稻麦轮作FACE 系统平台:Ⅱ. 系统控制和数据分析软件.应用生态学报, 2002, 13(10): 1259-1263.

[11]范桂枝, 蔡庆生. 植物对大气CO2浓度升高的光合适应机理最新研究进展.植物学通报， 2005, 22(4): 486-493.

[12]范桂枝, 李军营, 王春明, 等. 空气中CO2浓度升高条件下水稻抽穗期的QTL定位. 中国水稻科学, 2006, 20(3): 259-264.

[13]Graf B, Hill J E. Modelling the competition for light and nitrogen between rice and Echinochloa crusgalli. Agric Syst, 1992, 40: 345-359.

[14]曾青, 朱建国.开放式空气CO2 浓度升高与作物/杂草的竞争关系.应用生态学报, 2002, 13(10): 1339-1343.

[15]廖轶, 陈根云, 张海波,等.水稻叶片光合作用对开放式空气浓度增高的响应与适应. 应用生态学报, 2002, 13(10): 1205-1209.

Options

Outlines

模态框（Modal）标题

Abstract

Cite this article

References