【摘要】 通过使用外渗电导法结合植物体内丙二醛含量的变化,在-20℃至-40℃,设置5种温度梯度处理,以外界温度为对照,对新疆野生樱桃李不同生境,不同类型的20棵定点树和栽培李品种的一年生休眠枝的抗寒性进行了测定比较,研究结果表明大部分新疆野生樱桃李可以抵抗-25℃低温,少数可以抵抗-30℃的低温,抗寒顺序依次是:北方1号>绥李3号>牛心李>新疆野生樱桃李;而在野生樱桃李中,生境不同,基因型不同其抗寒力也有差异。更多还原

【Abstract】 In order to know the resistance to coldness of dormant shoots from Prunus divaricata Xinjiang wild cherry plum,it has been determined by means of electrical conductivity combined with the changes of MDA content.Five temperature gradient treatment from-20 ℃ to-40 ℃ were designed,which were used as controls,compared with the temperation in outside.The results indicated: the majority of Prunus americana can be resistant to the low-temperature below(-25 ℃) and few of them can be resistant to the low-temperature below-30 ℃.The order of the resistance to coldness of these plum specieses are: Beifang1>Suili3>Niuxin plum>Prunus divaricata respectively;Among Prunus divaricata,living condition is different and genotype is different,resistance to coldness is different too.更多还原