低温胁迫对花叶细辛生理生化及生长的影响  

Effects of low temperatures on physiological and biochemical indexes and growth of Asarum splendens

作　　者：蔡仕珍[1] 潘远智[1] 陈其兵[1] 叶充[1] 

机构地区：[1]四川农业大学林学院,四川雅安625014

出　　处：《草业学报》2010年第1期95-102,共8页Acta Prataculturae Sinica

基　　金：四川省林业科技"先导计划"重点创新研究项目(研究06-12)资助

摘　　要：以花叶细辛为材料,研究冬季自然降温和室内4,0,-4℃低温胁迫对叶片电解质渗透率、丙二醛含量、游离脯氨酸含量和可溶性糖含量4个抗寒指标的影响。结果表明,田间叶片的4个指标值从2007年11月开始,均逐月增加;室内4,0和-4℃处理植株,叶片的4个指标值均随处理温度降低而上升,随处理时间延长(即每增加12 h胁迫时间)亦呈上升趋势。生长恢复试验表明,田间植株及室内4和0℃处理后的植株均能恢复正常生长,但-4℃处理的植株,生长受到明显抑制。综合形态分析认为,花叶细辛能抵抗0℃以上低温,但不能抵抗-4℃以下低温。Physiological and biochemical indexes, including electrolyte leakage, malondiadehyde, free proline and soluble sugar content of Asarum splendens leaves were measured in both natural and room controlled temperatures of 4℃, 0℃ and -4℃. The above indexes increased from November 2007 to January 2008 as temperatures decreased. The measured indexes increased as the stress time extended. The field plants grew well in conditions of natural low temperature and the room plants also grew well in conditions of cold stress at 4℃ and 0℃, but the room controlled plants could not grow and develop well with a stress of -4℃. Comprehensive analysis indicated that A. splendens could resist low temperatures above 0℃, but not --4℃ or below.

关 键 词：低温胁迫 生理生化指标 恢复生长 花叶细辛 

分 类 号：S682.19[农业科学—观赏园艺]