杏品种花蕾细胞膜透性和脯氨酸含量与抗寒性的关系*

 试验研究了沙金红、鸡蛋杏、猪皮水杏和金荷包等四个抗寒性不同的杏品种，揭示休眠期间花蕾细胞膜透性和脯氨酸含量变化与抗寒性的关系，经方差分析表明：①抗寒性强的品种沙金红脯氨酸含量高、增幅大，抗寒性弱的反之；②沙金红的电导率在4个品种中上升幅度最小，表现出对低温更强的耐受力，而其它3个品种相对耐受力小；③一元线性回归结果显示，沙金红的回归系数b的绝对值及常数项a值相对较小，表明回归直线的倾斜度比较平缓，即温度的降低对电导率的升高影响较小，对低温有较强耐力。因此得出结论：四个供试杏品种花蕾的抗寒性大小依次为沙金红>鸡蛋杏>猪皮水杏>金荷包。

The Relationship between Bud Cell Membrane Permeability, Proline Levels and Cold Resistance

The study focused on the relationship between bud cell membrane permeability, proline level and cold resistance in 4 different almond varieties (Shangjinhong, Jidanxing, Zhunpishuixing and Jinhebao). The variance analysis revealed that ①the variety of shajinhong with strong cold resistance had a high level of proline, compared with other varieties with poor cold resistance; ②the ascending rate of electrolytic conductivity of Shajinhong was the smallest of these four varieties, which indicated that its cold resistance outperformed than other three varieties; ③the simple regression analysis showed that, the absolute value of regression coefficient b and constant a were smaller, which also indicated its strong resistance to low temperature. Thus, we came to the conclusion that the cold resistance of these four varieties were Shajinhong>Jidanxing>Zhunpishuixing>Jinhebao.