摘要
采用聚乙二醇(PEG6000)模拟水稻干旱胁迫方法,研究了水氮逆境下不同品种水稻茎叶氮素形态及部分无机离子含量的变化.研究结果表明,干旱胁迫使水稻茎叶中可溶性蛋白(SP)、全P、Na+含量降低,而对水稻体内全氮(TN)、蛋白态氮(prN)、非蛋白态氮(NprN)及K+、Ca2+、Mg2+含量的影响因品种而异,且与供氮水平有关.干旱胁迫下,氮素营养可明显增加水稻茎叶可溶性蛋白(SP)、全氮(TN)、蛋白氮(prN)及非蛋白氮(NprN)、全P、K+、Na+含量,但对Ca2+及Mg2+含量的影响具有品种间差异性.
The effects of nitrogen supply on nitrogen form and some inorganic ion contents in two rice varieties grown under drought stress induced by polyethylene glycol(PEG) were studied. The results showed that the contents of soluble protein(SP),total phosphorus, and sodium ion were reduced by drought stress, but the effects of drought stress on the contents of total nitrogen (TN)?protein-nitrogen(prN) ?nonprotein-nitrogen(NprN)?potassium ion(K^+)?calcium ion(Ca^(2+)),and magnesium ion(Mg^(2+)) depended on rice varieties and nitrogen levels. Under drought stressful conditions, the contents of soluble protein(SP)?total nitrogen(TN)?protein-nitrogen(prN) ?nonprotein-nitrogen(NprN)?total phosphorus(P)?potassium ion(K^+),and sodium ion(Na^+) in the shoots of rice plants were remarkably increased by the moderate nitrogen supply, but the effects of nitrogen nutrition on the contents of magnesium(Mg^(2+))and calcium ion(Ca^(2+)) varied with rice varieties.
出处
《科技通报》
北大核心
2004年第1期1-5,共5页
Bulletin of Science and Technology
基金
国家自然科学基金(39970146)
浙江省科技厅重点资助项目(011102187)
高等学校博士学科点专项科研基金(20030335076)
关键词
农业基础学科
水氮互作
氮形态
无机元素
水稻
茎
叶
干旱胁迫
agricultural basic science
water and nitrogen interaction
nitrogen form
inorganic element
rice
