|Table of Contents|

EFFECTOF ELEVATED ATMOSPHERIC CO 2 CONCENTRATION ONROOT NODULES AND NITROGENASE ACTIVITY IN SOYBEAN(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2006年01期
Page:
53-57
Research Field:
Publishing date:

Info

Title:
EFFECTOF ELEVATED ATMOSPHERIC CO 2 CONCENTRATION ONROOT NODULES AND NITROGENASE ACTIVITY IN SOYBEAN
Author(s):
Jiang Yuelin 1 　Zhang Qingguo 1 　Zhang Shiding 2 　Yue Wei 1 　Chen Tinfu 1 　Fan Lili 1
(1.Collegeof Resources and Environmental Science , Anhui Agricultural University , Hef ei 230036;2.Center for Physics and Chemistry Science , University of Science and Technology of China , Hefei 230026)
Keywords:
Soybean ; Elevated CO 2 ; Root nodule ; Nitrogen fixation activity
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2006.01.0053
Abstract:
　T he root characteristics including root volume , root fresh weight , length of main root , ratio ofroot fresh weight to shoot fresh weight , root nodule number and nitrogen fixation activity of soybean weremeasured under ambient and elevated CO 2 concentrations, and their responses to elevated CO 2 were ana-lysed.The results showed that growth of root system was promoted under high CO 2 levels.The root nod-ule number increased by 6.1%, 15.9 %, 19.2%and 26.5% at initial -flower stage under elevated (450,550, 650 and 750μmol/mol)CO 2 , compared to the ambient air CO 2 concentration .However , the root nod-ule number increased by 7.8%～ 48.0%at seed filling stage .On the other hand, the specific nitrogen fixa-tion activity based on root nodules fresh weight increased by 10 .1%～ 24 .0%and 6.0%～ 13.4%, at initial-flower .and seed filling stage.At the same time, the total nitrogen fixation activity per plant increasedby 10 .6%～ 55.7%and 20 .0%～ 73 .9%at two grow th stages under four high CO 2 levels.

References:

1 　Keeling C D , Whorf T P, Wahlen M , et al.Interannual extremesin the rate of rise of atmospheric carbon dioxide since 1980[ J] .Nature , 1995, 375:660～ 670.

2　董钻.大豆产量生理[ M] .北京:农业出版社, 2000:106～ 115.
3　Lambers H.G rowth, respiration, exudation and symbiotic associa-tions:the fate of carbon translocated to the roots.In:Gregory P J ,et al .eds.Root Development and Function[ M] .Cambridge UK :Cambridge University Press , 1987:125～ 146.
4　蒋跃林, 张庆国, 张仕定, 等.大气 CO 2 浓度增加对大豆营养品质的影响[ J] .中国粮油学报.2005, 20(5):85～ 88.
5　白克智, 钟泽璞, 丁莉, 等.大豆对大气 CO 2 倍增的一些生理反应[ J] .科学通报, 1996, 41(2):164～ 166.
6　蒋跃林, 张庆国, 岳伟, 等.大豆光合特性对大气 CO 2 浓度升高的响应[ J] .中国农学通报,2005, 21(3):290～ 293.
7　Schortemeyer M , hartwig U A , Hendrey G R, et al.Microbialcommunity changes in the rhizospheres of white clover and peren-nial ryegrass exposed to free air carbon dioxide enrichment(FACE)[ J] .Soil Biol Biochem , 1996, 28(12):1717～ 1724.
8　Finn G A , Brun W A .Effect of atmospheric CO 2 enrichment ongrowth , non-structural carbohydrate content and root nodule ac-tivity in soybean[ J] .Plant Phy siol, 1982, 69:327～ 331.
9　杨江龙.大气 CO 2 与植物氮素营养的关系[ J] .土壤与环境, 2002,11(2):163～ 166.
10 郑凤英, 彭少麟, 李跃林.CO 2 浓度升高对植物-土壤系统地下部分碳流通的影响[ J] .生态学杂志, 2002, 21(3)57～ 60.

Memo

Memo:
-
Last Update: 2016-12-12