关键词: 发展路径, 发展路径

Abstract: To investigate some mechanisms, which allow strawberry genotypes to adapt to soils which are low in available P. The root weights , lateral root number, root length, root/shoot-ratio, and acid phosphatase activity(APA) were investigated in four strawberry genotypes(Hong Yan, Zhang Ji, Tian Cha Li,Tong Zi Yi Hao) grown under P-deficient and P-sufficient conditions in hydroponic culture. The results revealed that the root weights, lateral root number, root/shoot-ratio(R/S), and acid phosphatase activity(APA) of the seedlings were all obviously higher during the P-deficiency than they were in the P-sufficient. On the contrary, the root length decreased remarkably under the condition of P-deficiency compared with the P-sufficient. It indicates that the mechanism in morphology and physiology to increase P uptake from the outer environment by which the strawberry seedlings adapt to the P-deficiency. Furthermore, Tian Cha Li compared with other strawberry cultivars has the better environmental adaptability to low phosphorus stress.