摘要
以抗盐品种茶淀红和盐敏感品种中国春等两种小麦为实验材料，研究甜菜碱对盐分胁迫条件下小麦（ＴｒｉｔｉｃｕｍａｅｓｔｉｖｕｍＬ．）幼苗Ｎａ＋、Ｋ＋、Ｃｌ－的吸收、分配的影响。结果表明：外源甜菜碱能够在一定程度上限制幼苗对Ｎａ＋、Ｃｌ－的吸收，阻滞其向地上部分运输的数量和速度，同时提高体内Ｋ＋含量、向上运输效率，降低地上部分对Ｎａ＋、Ｋ＋的选择性（ＳＮａ＋、Ｋ＋），从而提高小麦幼苗抗盐性和对盐分胁迫的适应性。
Effects of betaine on contents and distribution of Na +, K + and Cl - in two genotypes wheat ( Triticum aestivum L.) seedlings,Cha Dianhong (salt resistant one) and Chinese Spring (salt sensitive one),were studied under salt stress.The results showed that,betaine can relatively inhibit the absorption of Na + and Cl -,cut down the quantity and rate of its transportation to shoot,increase the K + content in wheat seedling,and decrease Na +,K + selectivity ratio (S Na +、K + ) of transportation to shoot. Therefore the salt resistance and the adaptability to salt stress of wheat seedlings were raised.
出处
《西北植物学报》
CAS
CSCD
1999年第2期278-283,共6页
Acta Botanica Boreali-Occidentalia Sinica
关键词
甜菜碱
抗盐性
小麦
钠
钾
氯
salt stress
betaine
S
Na +
K +
salt resistance
