大蒜植株超声波浸提液对不同受体蔬菜的化感作用  

Allelopathy of ultrasonic extract of garlic plant on different receiver vegetable crops

作　　者：王春会[1] 程智慧[1] 牛青[1] 梁静娜[1] 薛书浩[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2009年第7期103-109,共7页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家"十一五"科技支撑计划项目(2006BAD07B02);国家"十五"科技攻关项目(2004BA516A09);西安市科技攻关计划项目(YF07086)

摘　　要：【目的】初步探讨3个大蒜品种G57、G89、G09植株超声波浸提液对6种受体蔬菜种子发芽和幼苗生长的化感效应及其机理。【方法】将3个大蒜品种G57、G89、G09植株的超声波浸提液分别配成0.005,0.01,0.02,0.03和0.04 g/mL 5个质量浓度,以番茄、辣椒、大白菜、莴苣、黄瓜、萝卜为受体蔬菜,通过种子发芽生物测试法,测定受体蔬菜的发芽率、发芽指数、苗高、根长、地上部鲜质量和根鲜质量等指标。【结果】3个大蒜品种各质量浓度超声波浸提液对萝卜苗高、地上部鲜质量均有促进作用,对根长、根鲜质量却有抑制作用;当质量浓度为0.04 g/mL时,3个大蒜品种超声波浸提液对莴苣、辣椒的发芽率、发芽指数、苗高、根长、根鲜质量均有明显的抑制作用;在质量浓度为0.04 g/mL时,G09超声波浸提液对萝卜、莴苣发芽率产生显著的抑制作用,但是对番茄、大白菜、黄瓜和辣椒的发芽率无明显影响。3个大蒜品种超声波浸提液对不同受体蔬菜幼苗生长的抑制作用强弱为:G57>G89>G09。【结论】3个大蒜品种同一质量浓度的超声波浸提液对同一受体蔬菜的化感效应不同,且同一大蒜品种超声波浸提液各质量浓度对不同受体蔬菜各指标的化感效应也不同。[Objective] A primary study was conducted on allelopathy to explore its mechanism of ultrasonic extracts of three garlic varieties on seed germination and seedling growth of six receiver vegetable crops. [Method] The ultrasonic extracts of three garlic varieties were prepared in five concentrations of 0. 005,0.01,0.02,0.03 and 0.04 g/mL,and then with tomato,hot pepper,Chinese cabbage,lettuce,cucumber and radish for receiver vegetable crops. The seed germination rate, germination index, seedling length, root length,top fresh weight and root fresh weight of receiver vegetable crops were measured by seed germination bioassy method. [Result] The concentration of three garlic variety ultrasonic extracts showed promotion effects on seedling length and the top fresh weight of radish,but inhibitory effects on root length and root fresh weight;The 0.04 g/mL of three garlic plant ultrasonic extracts significantly inhibited the seed germination rate,germination index,seedling length,root length and root fresh weight of lettuce and hot pepper;when at the 0.04 g/mL of garlic plant extract, the ultrasonic extracts of G09 garlic variety significantly inhibited the seed germination rate of radish and lettuce, but had no obvious effects on tomato, Chinese cabbage, hot pepper and cucumber. The intensity of inhibitory effects of three garlic cultivar ultrasonic extracts to seedling growth of different receiver vegetable crops was ：G57〉G89〉G09. [Conclusion] The same concentration ultrasonic extracts of three garlic varieties showed different allelopathic effects on the same receiver vegetable crops and there were differences among different concentrations of the same garlic variety to different receiver vegetable crops.

关 键 词：大蒜 超声波浸提液 育苗试验 化感作用 

分 类 号：S633.409.9[农业科学—蔬菜学]