EFFECT OF LOW TEMPERATURE STRESS ON PHYSIOLOGICAL AND BIOCHEMICAl INDEXES OF FOUR BECKWELL SPECIES | 低温胁迫对4个柏科植物品种生理生化的影响
2013
Yao Hong, Inner Mongolia Agricultural University,Huhhot（China） | Jin Hong, Inner Mongolia Agricultural University,Huhhot（China） | Pan Qinghua, Beijing Academy of Agriculture and Forestry Sciences, Beijing（China），Institute of Pomology and Forestry
中国人. 以金色侧柏、绿色侧柏、蓝色天空和蓝箭4个柏科植物品种为试材,分别在0℃、-10℃、-20℃、-30℃、-40℃低温胁迫处理后,测定其叶片的细胞膜透性、可溶性糖和脯氨酸含量,探讨其生理生化指标的变化及抗寒性。结果表明,随温度的降低,4种柏科植物的相对电导率值、脯氨酸含量、可溶性糖含量总体均呈升高趋势。通过拟合Logistic方程,得出金色侧柏、绿色侧柏、蓝色天空、蓝箭等4种植物的LT50分别为-23.57℃、-29.7℃、-32.32℃、-38.99℃,4个柏科植物的抗寒性强弱分别为：蓝箭〉蓝色天空〉绿色侧柏〉金色侧柏。
显示更多 [+] 显示较少 [-]英语. Under the low temperature stress , 1 -year- old doimant branches of four beckwell species were used as test materials to determine the electro -conductivities, soluble sugar, and proline content. They are Juniperus formosana Blue Arrow, Platycladus orien- talisGreen oriental, Juniperus scopulorumBlue Heaven＇and Platycladus oriental Golden oriental： The aim is to study the changes of physiological and biochemical indexes and the cold resistance of different plants. Results show that the value of the relative conductivity , proline （Pro） content, the soluble sugar content has been increasing in the temperature decreases. According to Logistic equation fit- ting, the semi - lethal low temperatures were - 23.57℃, - 29.7℃, - 32.32＇E, - 38.99℃. The four beckwell types of plant cold tol- erance of pruning intensity as follows ： Blue arrow 〉 Blue sky 〉 Gold Platycladus orientalis 〉 Green Platycladus orientalis.
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