摘要
The activity of acid phosphatase exuded by roots,the tissue location of the enzyme, and the relationship between the enzyme activity and phosphorus efficiency of wheat were studied. The results showed that the activity of acid phosphatase exuded by wheat 81(85)5 3 3 3 and NC37 under P sufficiency treat were lower than those under P deficiency, and the enzyme activity of the former variety was significantly higher than that of the latter. There was a significant difference in the enzyme activity among 12 wheat genotypes grown under P deficiency treat. Acid phosphatase was exuded by epidermis cell of root, especially by epidermal cell of root apex. Thus, there was a linear relationship between the enzyme activity and the surface area of root or the number of root apexes. It implied that the enzyme activity was markedly related to the size of root system. The linear relationship between relative grain yield and acid phosphatase activity was significant. It indicates that the enzyme activity could be used as an early indicator to select P efficient wheat genotypes.
The activity of acid phosphatase exuded by roots,the tissue location of the enzyme, and the relationship between the enzyme activity and phosphorus efficiency of wheat were studied. The results showed that the activity of acid phosphatase exuded by wheat 81(85)5 3 3 3 and NC37 under P sufficiency treat were lower than those under P deficiency, and the enzyme activity of the former variety was significantly higher than that of the latter. There was a significant difference in the enzyme activity among 12 wheat genotypes grown under P deficiency treat. Acid phosphatase was exuded by epidermis cell of root, especially by epidermal cell of root apex. Thus, there was a linear relationship between the enzyme activity and the surface area of root or the number of root apexes. It implied that the enzyme activity was markedly related to the size of root system. The linear relationship between relative grain yield and acid phosphatase activity was significant. It indicates that the enzyme activity could be used as an early indicator to select P efficient wheat genotypes.
出处
《应用生态学报》
CAS
CSCD
2002年第3期379-381,共3页
Chinese Journal of Applied Ecology
基金
国家自然科学基金重大项目 (3 9790 10 0 )
关键词
小麦
根系
缺磷
酸性磷酸酶活性
磷效率
Wheat, Location of acid phosphatase, Phosphorus efficiency.
