温汤处理种球对亚洲百合幼苗耐热性的影响  

Effect of Hot Water Treatment of Bulbs on Heat Tolerance of Lily Young Plants

作　　者：刘雪凝[1] 杨利平[2] 马川[1] 向地英[1] 

机构地区：[1]河北农业大学园艺学院,河北保定071000 [2]长江师范学院生命科学与技术学院,重庆408100

出　　处：《中国农业科学》2010年第6期1314-1320,共7页Scientia Agricultura Sinica

基　　金：河北省自然科学基金项目(C2008000265)

摘　　要：【目的】研究温汤处理种球对亚洲百合幼苗耐热性的影响。【方法】以亚洲百合‘多安娜’(Pollyanna)为试材,研究种球在45℃下,经历不同时间梯度(0、10、20、30、40、50min)温汤处理后,其幼苗抗性生理指标及电阻抗图谱参数对38℃胁迫的反应。【结果】种球热锻炼20min,植株SOD活性及可溶性糖含量分别高于对照51.41%(P<0.01)和23.45%(P<0.01),根系活力比对照增加57.11%(P<0.01),弛豫时间与对照无显著性差异;处理30min后,SOD活性及可溶性糖含量分别达到峰值,但与处理20min差异不显著,且根系活力下降至低于对照。【结论】种球温汤处理20min显著提高亚洲百合‘多安娜’幼苗耐热性。[ Objective ] The aim of the experiment is to study the effect of hot water treatment of bulbs on heat tolerance of lily plants. [Method] Asiatic hybrid ＇Pollyanna＇ was used as the experimental material, and the bulbs were dipped into the hot water at 45℃ for different times of 0, 10, 20, 30, 40 and 50 min. After planting, the physiological indices and the electrical impedance spectroscopy parameters of young plants under heat stress at 38℃ were studied, [Result] Heat shocked bulbs for 20 min promoted the activity of SOD and the content of soluble sugar in the leaves, they were higher than the control by 65.95% （P〈0.01）, and 23.75% （P〈0.01）, respectively. The root activity was higher than the control by 57.11% （P〈0.01）, but there was no significant difference between relaxation time and control. Although SOD activity and soluble sugar content reached the peak after 30 min of treatment, there was no significant difference with 20 min treatment, and the root activity decreased rapidly. [Conclusion] Lily plants can acquire heat tolerance obviously through hot water treatment of bulbs for 20 min.

关 键 词：百合 温汤处理 生理指标 电阻抗图谱参数 耐热性 

分 类 号：S682.29[农业科学—观赏园艺]