摘要
对水稻种子在模拟大气不同ＣＯ＿２含量下，种子萌发期和幼苗期的生理变化试验表明，在水稻种子萌发期，大气中ＣＯ＿２含量为４５０ｍｇ／ｋｇ时，过氧化氢酶、酸性磷酸酯酶的活性和三磷酸腺苷含量最高，分别比对照提高２０．５％，１２．０％和２４．８％。在水稻幼苗期，大气ＣＯ＿２含量为５００ｍｇ／ｋｇ时，１．５—二磷酸核酮糖羧化酶活性比对照提高３１．３３％；ＣＯ＿２含量为４５０ｍｇ／ｋｇ时，过氧化物酶活性比对照下降２４．９％，幼苗吸收磷能力提高１９．０％。３叶期稻苗高、根长和干物质含量，４００～６００ｍｇ／ｋｇＣＯ２含量处理间差异不显著，但比对照均略有提高。
In a
simulation experiment where different concentrations of CO_2 were applied,germination rate of
rice seeds and physiological changes in the seedlings were determined.Compared with the
control(CO_2 350 mg/kg),CO_2 450 mg/kg enhanced the activity of catalase and
phosphoesterase and the content of ATP during seed germination by 20.5%,12.0% and
24.8%,respectively and increased P uptake by the seedlings by 19.0% whileit reduced
peroxidase activity by 24.9%. At the seedling stage, CO2 500 mg/kg in the at-mo-sphere
incresed the activity of ribulase-1.5-bisphosphate carboxylase-oxygenase by 31.33%,At 3-leaf
stage,CO_2 600 mg/kg increased shoot height,root length and dryweight of the shoot by
5.9%,6.4%and
10.3%,respectively.
出处
《西南农业大学学报（自然科学版）》
CSCD
1996年第4期343-345,共3页
Journal of Southwest Agricultural University
关键词
水稻
二氧化碳
大气
种子
萌发
生长
paddy
CO_2
atmoapheres
seeds
physiology-effects
enzyones
