赤霉素(GA_3)对叶用莴苣抽薹特性的影响  

Effects of GA_3 on Leaf Lettuce Bolting Characteristics

作　　者：张润花 刘旭东 王斌才 周国林 黄兴学 汪爱华 林处发 

机构地区：[1]武汉市农业科学技术研究院蔬菜科学研究所,430065

出　　处：《长江蔬菜》2016年第22期67-69,共3页Journal of Changjiang Vegetables

基　　金：武汉市农科院英才计划项目--叶用莴苣抽薹调控效应及机理研究(YC201401);武汉市农科院科技创新项目--蔬菜产品安全生产与质量溯源研究(CX201604)

摘　　要：以叶用莴苣耐抽薹品种意大利生菜和易抽薹品种佰根绿为试验材料,采用营养钵基质栽培法,研究了外源GA_3处理对叶用莴苣抽薹特性(薹中心柱长、抽薹率)的影响。试验结果表明,GA_3可显著促进叶用莴苣抽薹,显著增加薹高及抽薹率,佰根绿的薹高、抽薹率分别是对照(不喷GA_3)的5.7倍、2.25倍,意大利生菜的薹高、抽薹率分别是对照的5.5倍、2.01倍,易抽薹品种的抽薹特性对GA_3的响应较为敏感。This paper researched the effects of exogenous GA3 on leaf lettuce bolting characteristics including peduncle center column length and bolting rate using nutrimental bowl substrate cultivation method with Italy lettuce, the bolting resistant cultivar and Baigenlv, the bolting susceptible cuhivar as the test material. The results showed that GA3 can Significantly promote the leaf lettuce bolting, significantly increase the peduncle height and bolting rate. The peduncle height and bolting rate of Baigenlv was 5.70 and 2.25 times respectively than control treatment （no GA3）. The peduncle height and bolting rate of Italy lettuce was 5.50 and 2.01 times respectively than the control cultivar. The bolting characteristics of the bolting susceptible cuhivar were more sensitive to GA3 than others.

关 键 词：叶用莴苣 抽薹 赤霉素 生长调节剂 

分 类 号：S636.2[农业科学—蔬菜学]