禾本科植物内生真菌研究10——内生真菌共生体的苗期生物学特性  

Grass endophyte research 10——Seedling properties of Neotyphodium endophyte-host complexes

作　　者：于汉寿[1] 纪燕玲[1] 翁忠贺[1] 王志伟[1] 

机构地区：[1]南京农业大学生命科学学院,江苏南京210095

出　　处：《草业科学》2009年第10期150-154,共5页Pratacultural Science

基　　金：国家自然科学基金资助项目(30070019)

摘　　要：有些禾本科植物内生真菌能为宿主植物带来抗病虫害、抗旱、促进苗期生长和分蘖等性能。研究利用种子中Neotyphodium属内生真菌含菌率不同的苇状羊茅Festuca arundinacea、多年生黑麦草Lolium perenne和野生鹅观草Roegneria kamoji进行了室内发芽试验、室外和人工气候箱内的盆栽试验以及室内外蚜虫接种试验,调查了内生真菌对其宿主苗期生物学特性的影响。发现种子含菌率比较高的苇状羊茅和多年生黑麦草分蘖多,幼苗抗虫性明显提高;种子含菌率比较高的鹅观草发芽率高,出苗整齐,生长快,分蘖多,但幼苗无明显的抗虫性。研究结果进一步说明了禾本科植物内生真菌在农业上具有广阔的利用前景。Abstract： Some endophytic fungi involved in gramineous plants could provide better resistance to pests and planl pathogens, belier tolerance to drought, better plant growth and tilleringof the host. In this study, the seed germination, seedling growth and aphid resistance of several varieties of tall fescue （Lolium arundinaceum ）, perennial ryegrass （L. perenne） and wheat grass （Roegneria kamoji ） conraining endophytic fungi at different levels were tested both in growth chamber and pot. More tillers and better aphid resistance were significantly observed from both tall rescue and perennial ryegrass varieties containing higher levels of endophytic fungus in the seeds, while seedlings of wheat grass infected higher level of endophytic fungi had higher seed germination rate, better growth and more tillers.However, endophytie fungi infected in wheat grass did not cause better aphid resistance of the host. These indicaled 1hat the application of these endophydc fungi in agriculture was promising.

关 键 词：禾本科植物 内生真菌 共生体 生物学特性 促生长 抗虫 

分 类 号：S688.4[农业科学—观赏园艺] S182[农业科学—园艺学]