长枝木霉T6菌株对小麦耐盐性的影响

发布时间：2018-01-06 06:42

本文关键词：长枝木霉T6菌株对小麦耐盐性的影响　出处：《干旱地区农业研究》2016年04期 　论文类型：期刊论文

【摘要】：利用NaCl溶液模拟盐胁迫条件,测定了长枝木霉T6菌株耐盐性及其对小麦耐盐性的影响。结果表明:当NaCl溶液浓度为30~50 mg·m L~(-1)时,其对长枝木霉T6菌株生长具有显著的抑制作用,并且其影响作用随着NaCl溶液浓度的升高而增强,随着处理后培养时间的增加而逐渐减小,但当NaCl溶液浓度为10、20 mg·m L~(-1)时,与对照相比其对长枝木霉T6菌株生长无显著影响,且表现出较强的耐盐性;长枝木霉T6菌株对NaCl溶液胁迫下小麦种子的发芽率、发芽势、萌发指数、胚芽和胚根长度具有明显的促生作用,且与对照相比分别增加了3%~15%、6%~14%、4%~16%、9%~34%和9%~31%。因此,长枝木霉T6菌株具有较强的耐盐性和解盐促生作用。
[Abstract]:To simulate the salt stress by NaCl solution, longibrachiatum strain T6 of salt tolerance and its effect on salt tolerance of wheat was determined. The results show that when the concentration of NaCl is 30~50 mg m L~ (-1), which has a significant inhibition on the growth of long branch of Trichoderma strain T6, and its influence with the increasing of the concentration of NaCl solution and increased with increasing incubation time after treatment decreased gradually, but when the concentration of NaCl is 10,20 mg m L~ (-1) when compared with the control of the long branch of Trichoderma strain T6 growth had no significant effect, and showed stronger salt tolerance; long the germination rate of Wheat seed branch, Trichoderma strain T6 of NaCl solution stress on the germination potential, germination index, plumule and radicle length has obvious promoting effect, and were increased by 3%~15%, compared with 6%~14%, 4%~16%, 9%~34% and 9%~31%. so longibrachiatum strain T6 has strong resistance and salt of Salt promoting effect.

【作者单位】：甘肃农业大学植物保护学院;
【基金】：甘肃省农牧厅生物技术专项(GNSW-2009-04,GNSW-2013-19) 甘肃省教育厅项目(042-03)
【分类号】：S512.1;S182
【正文快照】： 近年来,土壤盐渍化已成为一个世界性问题,日益威胁着人类赖以生存的土地资源和农业生产[1-2]。据统计,全世界盐碱土面积约占土地总面积的7%左右,并有逐年增加的趋势[3]。我国盐渍化土壤面积约为1.0×108hm2,约占土地总面积37%[4]。张金盛等[5]研究表明温室中黄瓜(Cucumissativ

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