甘蔗喷施稀土增产增糖机理的研究 Ⅳ.抗逆性效应的研究

Study on the Mechanism of High Yield and High Sucrose Content of Sugarcane Sprayed with Rare Earth Solution Ⅳ.Study on the Stress Resistauce

稀土能调节细胞的渗透压,维持细胞膜结构和功能的稳定性和完整性,增强细胞壁的伸缩性,提高甘蔗的抗旱性。能改善质膜的透性,提高其选择吸收能力,减轻高浓度 Na^+的毒害,提高甘蔗的耐盐性。

RE can raise the drought resistance of sugarcane by keeping the struc- ture and the effective of the plasmolemma,controlling the osmotic pressure of cells and raising the plasticity of cell walls.It can also raise the salt tolerance of sugarcane by developing the permeability and the selective absorption capacity of plasmolemma,decreasing the harm of high Na^+ content.