化感物质己二酸二异丁酯对茄子黄萎病及幼苗生长的效应  被引量:5

Allelopathy of Hexanedioic Acid,Bis (2-methylpropyl) Ester to Verticillium Wilt (Verticillium dahliae) and Eggplant Seedling Growth

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作  者:刘娜[1] 周宝利[1] 李轶修[1] 张健[1] 陈丰[1] 贾倩[1] 鲁博[2] 

机构地区:[1]沈阳农业大学园艺学院,沈阳110161 [2]上海市农业科学院农业科技信息研究所,上海201106

出  处:《园艺学报》2009年第7期1065-1070,共6页Acta Horticulturae Sinica

基  金:国家自然科学基金项目(30771469);‘十一五’国家科技支撑计划重点项目(2008BADA6B02);国家‘863’计划项目(2004AA247010);辽宁省教育厅高等学校创新团队项目(2006T118)

摘  要:采用模拟的方法,研究了化感物质己二酸二异丁酯对茄子黄萎菌及茄子种子萌发、幼苗生长的效应。结果表明,己二酸二异丁酯在黄萎菌培养的前阶段极显著地抑制了菌丝的生长,培养7d时,1.0mmol.L-1的抑制作用最大。田间抗病试验结果表明,各浓度己二酸二异丁酯均提高了茄子幼苗对黄萎病的抗性,其中以0.5mmol.L-1处理最好。己二酸二异丁酯低浓度时促进了茄子种子的萌发,增加了幼苗的株高、茎粗、地上和地下部干鲜质量、叶绿素含量和根系活力,而随着浓度增大,促进作用减弱或者表现出抑制作用。低浓度的己二酸二异丁酯对叶片丙二醛(MDA)含量和细胞膜相对透性起化感抑制作用,并随浓度增加作用强度增大;但浓度增至1.0mmol.L-1时,表现化感促进作用。Allelopathy of hexanedioic acid, bis (2-methylpropyl) ester exudated by grafted eggplant roots to Verticillium wilt ( Verticillium dahliae) and seedling growth was studied by using simulative method. The results showed that hexanedioic acid, bis (2-methylpropyl) ester had a significant suppression to the mycelium growth in early stage during culturing Verticillium dahllae. When the mycelium growing to 7 d, 1.0 mmol·L^-1 had the best inhibitory effect. The results of field investigation indicated that hexanedioie acid, bis (2-methylpropyl) este enhanced the disease resistance of eggplants at all the concentrations and the best effect presented in 0. 5 mmol· L-1 treatment. Hexanedioic acid, bis (2-methylpropyl) ester exhibited allelopathic promotion at a low concentration and allelopathic inhibition at a high concentration on eggplant seed germination, seedling growth. While the MDA content and relative electricity conductivity were inhibited by hexanedioic acid, bis (2-methylpropyl) ester at a low concentration, and the inhibitory rates were enhanced with the increasing concentration. Up to 1.0 mmol·L^-1, hexanedioic acid, bis (2-methylpropyl) ester presented allelopathic promotion.

关 键 词:茄子 根系分泌物 化感作用 黄萎菌 

分 类 号:S641.1[农业科学—蔬菜学]

 

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