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| 甜瓜枯萎病拮抗内生细菌筛选 | |
| 引用本文： | 高增贵,李天来,赵玥,陈捷. 甜瓜枯萎病拮抗内生细菌筛选[J]. 西北农林科技大学学报(自然科学版), 2005, 33(Z1): 85-87 |
| 作者姓名： | 高增贵 李天来 赵玥 陈捷 |
| 作者单位： | 1. 沈阳农业大学,植物保护学院,辽宁,沈阳,110161 2. 沈阳农业大学,园艺学院,辽宁,沈阳,110161 3. 上海交通大学,农业与生物学院,上海,201101 |
| 基金项目： | 辽宁省自然科学基金(20032087);沈阳农业大学园艺学院博士后研究项目 |
| 摘 要： | 从2~5叶期甜瓜根茎部共分离纯化了内生细菌81株,平皿对峙试验结果表明,有6株内生细菌对甜瓜枯萎病菌的生长有明显的拮抗作用,其中Z46,Z53,Z54和Z56菌株的拮抗性较强。上述4株拮抗菌的5倍发酵滤液对镰刀菌的抑制率分别为62.8%,66.8%,63.0%,64.7%。温室内防效试验结果表明,Z56对甜瓜枯萎病的防效最高,200倍和400倍发酵液的防效分别为80.0%和60.0%,同时对寄主具有明显的促生作用。说明Z56菌株具有潜在生防功能。 |
| 关 键 词： | 甜瓜枯萎病 内生细菌 拮抗性,防效测定 |
| 文章编号： | 1671-9387(2005)S0-0085-03 |
| 修稿时间： | 2005-07-08 |
Selection of endophytic bacteria for suppression of melon wilt caused by Fusarium oxysporium |
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| GAO Zeng-gui,LI Tian-lai,ZHAO Yue,CHEN Jie. Selection of endophytic bacteria for suppression of melon wilt caused by Fusarium oxysporium[J]. Journal of Northwest A&F University（Natural Science Edition）, 2005, 33(Z1): 85-87 | |
| Authors: | GAO Zeng-gui LI Tian-lai ZHAO Yue CHEN Jie |
| Affiliation: | GAO Zeng-gui~1a,LI Tian-lai~1b,ZHAO Yue~1a,CHEN Jie~2 |
| Abstract: | 81 endophytic bacteria strains were obtained by isolating 2-5-leaf stage plants of 2 melon cultivars.Plate confrontation test showed that 6 bacteria strains inhibited the growth of Fusarium oxysporium.Among these,antagonistic effect of Z46,Z53,Z54 and Z56 showed the best.Fermentation inhibition effect of the 4 antagonistic bacteria strains against the growth of pathogen were 62.8%,66.8%,63.0% and 64.7% respectively.Z56 strain could effectively control melon wilt,the control efficacy of fermented solution diluted by 200 and 400 times were 80.0% and 60.0% in greenhouse test. |
| Keywords: | melon wilt endophytic bacteria antagonistic control efficacy |
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