壳聚糖对酸枣种子萌发及幼苗生长的影响  

Effects of chitosan on seed germination and seedling growth of Ziziphus acidojuba

作　　者：张俊风[1,2] 李庆梅[3] 段新芳[1] 刘广全[4,5] 彭祚登[2] 

机构地区：[1]中国林业科学研究院新技术研究所 [2]北京林业大学森林培育与保护教育部重点实验室 [3]中国林业科学研究院林业研究所 [4]西北农林科技大学 [5]国际泥沙研究培训中心

出　　处：《北京林业大学学报》2010年第6期146-150,共5页Journal of Beijing Forestry University

基　　金："十一五"国家科技支撑计划项目( 2006BAD09B06;2006BAD03A0308);"948"水利部引进项目(200207)

摘　　要：用0.05%、0.1%、0.15%、0.2%4种浓度壳聚糖乙酸溶液对酸枣种子浸种24h,以清水浸种24h为对照。25℃恒温培养15d,每天光照8h,酸枣种子的发芽率、种子活力、α-淀粉酶活性、脱氢酶活性、过氧化物酶活性和过氧化氢酶活性均比对照高,壳聚糖处理的最佳浓度为0.1%;用以上4种浓度壳聚糖乙酸溶液喷施正常生长的酸枣幼苗,清水喷洒为对照,其幼苗生长量、叶绿素含量、可溶性糖和蛋白质含量显著高于对照,壳聚糖浓度为0.1%时效果最佳。Ziziphus acidojuba seeds were soaked in acetic chitosan solutions with different concentrations （0.05% , 0. 10% , 0. 15% , 0.20% ） for 24 h in comparison with seeds in water. Then these seeds were placed in a germinator （controlled at 25℃ and 8 h/d light） for 15 d. The results showed that the germination rate, seed vigor, α-amylasc activity, dehydrogenase activity, POD activity and CAT activity were higher than those of control. The best concentration of acetic chitosan solution was 0.1%. For Z. acidojuba seedlings sprayed with acetic chitosan solutions with four concentrations, their growth, chlorophyll content, soluble sugar content and protein content were higher than those of control. The best concentration of acetic chitosan solution was 0. 1%.

关 键 词：壳聚糖 酸枣 种子萌发 幼苗 

分 类 号：S718.43[农业科学—林学]