水杨酸对铁皮石斛幼苗部分生理指标的影响  

Effects of Salicylic Acid on Some Physiological Indexes of Dendrobium officinale Seedlings

作　　者：王静[1] 吴泽芳[1] 唐小利[1] 向柳[1] 扬森[1] 段辉国[1,2] 

机构地区：[1]内江师范学院生命科学学院,四川内江641112 [2]特色农业资源研究与利用四川省高等学校重点试验室,四川内江641112

出　　处：《贵州农业科学》2013年第1期75-76,79,共3页Guizhou Agricultural Sciences

基　　金：四川省教育厅重点研究项目"水杨酸(SA)对盐胁迫植物生理生化特性影响研究"(09ZA054);内江师范学院重点建设学科项目"生物化学与分子生物学"[内师学研(2012)3];内江师范学院大学生科研项目"水杨酸处理对铁皮石斛幼苗部分生理指示的影响"(11NSD-162)

摘　　要：为筛选适宜的水杨酸浓度,提高铁皮石斛的产量、质量和抗逆性,研究了不同浓度外源水杨酸对铁皮石斛幼苗叶绿素、蛋白质、脯氨酸和可溶性糖含量的影响。结果表明:外源SA能不同程度地提高铁皮石斛幼苗叶绿素a、叶绿素b、蛋白质和脯氨酸含量,降低可溶性糖的含量。其中,1mmol/L SA对幼苗的叶绿素a、叶绿素b、蛋白质、可溶性糖含量的作用效果最佳,1.5mmol/L SA预处理对提高脯氨酸含量效果最好。表明,外源水杨酸能不同程度地促进铁皮石斛幼苗的生长,增强铁皮石斛幼苗的抗逆性。Effects of different concentrations of salicylic acid （SA） on chlorophyll of leaves, protein, soluble sugar and proline of stems of D. officinale seeding were studied to screen the optimum SA concentration to enhance yield, quality and stress resistance of D. officinale. The results showed that contents of chlorophyll, protein and proline were increased and content of soluble sugar was decreased after pretreatment of SA. 1 mmol/L SA showed the most effect on contents of chlorophyll, protein and soluble sugar. While 1.5 mmol/L SA could improve content of proline preferably. These results show that pretreatment of SA can promote the growth of D. officinale seeding and enhance its ability of stress resistance.

关 键 词：水杨酸 铁皮石斛 生理指标 

分 类 号：S311[农业科学—作物栽培与耕作技术]