| 内生真菌侵染对古侧柏种子萌发及幼苗生长的影响 |
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| 引用本文： | 侯姣姣,余仲东,康永祥,布芳芳,隋韵静.内生真菌侵染对古侧柏种子萌发及幼苗生长的影响[J].西北林学院学报,2016,31(6):110-115. |
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| 作者姓名： | 侯姣姣 余仲东 康永祥 布芳芳 隋韵静 |
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| 作者单位： | （西北农林科技大学 林学院，陕西 杨陵 712100） |
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| 摘 要： | 试验选取8株古侧柏优势内生真菌，采用浸种、灌根法对古侧柏种子及幼苗进行接种处理，通过测定种子发芽率、发芽势、发芽指数和幼苗高、地径、根冠比、干物质量、叶绿素含量等指标，探讨其对古侧柏种子萌发和幼苗生长的影响。结果表明，黑附球菌（Epicoccum nigrum）C-4对种子萌发及幼苗生长均有促进作用，可显著提高侧柏种子的发芽势、发芽指数以及幼苗高、地径、干重、含水量和叶绿素a/b比值，烟曲霉（Aspergillus fumigatus）C-6对侧柏种子的萌发无影响，但促进了侧柏幼苗的生长；链格孢霉（Alternaria alternata）C-5对侧柏种子萌发及幼苗生长均产生抑制作用，哈茨木霉（Trichoderma harzianum）C-1浸种后对种子萌发无影响，但在定期灌根处理后，对侧柏幼苗产生抑制作用；其他供试菌株对侧柏种子萌发及幼苗生长的影响不显著。8株古侧柏优势内生真菌处理对侧柏种子萌发和幼苗生长表现出促进、抑制或无作用，其中C-4和C-6是2株具有促生能力的优势菌，为古侧柏的保护和更新提供基本材料。
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| 关 键 词： | 内生真菌 古侧柏 种子萌发 幼苗生长 |
Effects of Endophytic Fungi on Seed Germination and Seedling Growth of Ancient Platycladus orientalis |
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| HOU Jiao-jiao,YU Zhong-dong,KANG Yong-xiang,BU Fang-fang,SUI Yun-jing. Effects of Endophytic Fungi on Seed Germination and Seedling Growth of Ancient Platycladus orientalis[J].Journal of Northwest Forestry University,2016,31(6):110-115. |
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| Authors: | HOU Jiao-jiao YU Zhong-dong KANG Yong-xiang BU Fang-fang SUI Yun-jing |
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| Institution: | (College of Forestry,Northwest Agriculture and Forestry University,Yangling,Shaanxi 712100,China) |
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| Abstract: | In order to understand the effects of endophytic fungi occurring in ancient Chinese arborvitae on seed germination and seedling growth,eight dominant strains were collected,from ancient Platycladus orientalis leaves were re-inoculated into the seeds and seedlings of arborvitae by seed soaking and root-irrigating.The seed germination rate,germination potential,germination index,seedling height,ground diameter,root shoot ratio,dry weight,water content and chlorophylls were detected,respectively.The results showed that,Epicoccum nigrum C-4 significantly promoted seed germination and seedling growth,under the treatment of C-4 suspension,the germination potential,germination index,and seedling height,ground diameter,dry weight,water content and chlorophyll a/b were all significantly higher than that of the control.Aspergillus fumigatus C-6 just promoted seedling growth.Alternaria alternata C-5 showed obvious inhibiting effect on seed germination and seedling height.Trichoderma harzianum C-1 only showed obvious inhibiting effect on seedling height by root-irrigation of C-1 suspension.Other tested strains were not obvious in the experiment.The eight strains had promotion,inhibition,or no effect on seed germination and seedling growth; C-4 and C-6 were the dominant strains among the tested endophytes,which could become the basic material for ancient P.orientalis protection and regeneration. |
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| Keywords: | endophytic fungi Platycladus orientalis ancient Platycladus orientalis seed germination seedling growth |
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