树木的细胞膜透性与抗盐性

The Relationship of Permeability of Plasma Membrane and Salt Resistance of Woody Plants

在盐逆境条件下，研究了１６个针阔叶树种的细胞膜透性与抗盐性，其结果表明：细胞膜透性是研究抗盐性的理想指标。抗性强的树种细胞膜不易被破坏，透性小，抗性差的树种细胞膜被破坏的严重，透性大。针叶树中樟子松、华山松、红松的抗盐性较强，臭松抗性中等，落叶松、红皮云杉抗性较差；阔叶树中白榆、水曲柳抗性较强，黑林３号杨，中绥１２号杨及紫椴抗盐性处于中等水平，１１８号杨、７９８６０１号杨、白桦的抗盐性最差。

The permeability of plasma membrane and salt resistance of 16 conifers and broadleaf species (line) were studied under salt stress. The results showe that the permeability of plasma membrane is the ideal measure to study the salt resistance. Plasma membrane of the resistant species are difficult to be destroyed and the permeabibity is less than that of the sensitive species whose plasma membrane are seriouly destroyed.The most resistant conifers species were Pinus sylvestris var. mongolica , Pinus armandi Franch, Pinus koraiensis . Abies nephrolepis was mediate resistant to salt, and the resistance of Larix and Picea asperata were poor. The most resistant species in the broadleaf species were Vlmus pumila , Fraxinus mandshurica , followed by Heilin 3, Zhongsui (12 two lines of Populus ) and Tilia amurensis , and the most sensitive species were 118, 798601(two lines of Populus ) and Betula platyphylla .The resistant difference among species provided material basis for choosing resistant species.