Screening Strains of Trichoderma spp for Plant Growth Enhancement in Taiwan

篩選可促進瓜類生長之木黴菌

羅朝村(Chaur-Tsuen Lo) ； 林俊義(Chien-Yih Lin)

《植物病理學會刊》 11卷4期 (2002/12) Pp. 215-220

https://doi.org/10.6649/PPB.200212_11(4).0007

摘要

由台灣各地區之作物根圈與根圈土壤分離出來的本黴菌菌株，經直接針對胡瓜種子發芽與根系生長所作的測試；顯示約有2.8%的木黴菌菌株可促進胡瓜根生長與增加側根之數量。這些有益木黴菌菌株經與土壤混合至106 cfu/g soil後，於溫室中作接種試驗，發現多株Trichoderma harzianum及T. virens等主要種類菌株，除可增加苦瓜、絲瓜及胡瓜根系分佈外；植株高度、葉面積及根乾重量亦有提高之現象。另外測試瓜葉片之葉綠素亦發現有木黴菌處理者其濃度較無處理者有顯著性提高；然測試根圈纏繞能力與促進瓜類生長關係則無顯著之相關性。

關鍵字

木黴菌 ； 生物防治 ； 根分布 ； 葉綠素

並列摘要

Several strains of Trichoderma spp. isolated from rhizosphere soils and rhizoplane of agricultural crops in Taiwan were selected to detect the root growth of bitter gourd, loofah, and cucumber. Some strains of tested species of Trichoderma in this study promoted the root growth of these cucurbitaceous crops as compared with untreated plants. Tests in greenhouse showed the strains of the Trichoderma species significantly increased of 26 to 61 % in seedling height, 85-209% in root exploration, 27 to 38% in leaf area, and 38 to 62% in root dry weight for 15 days after sowing seeds of bitter gourd. Similarly, These Trichoderma strains also increased seedling growth of loofah and cucumber. In a test of chlorophyll concentration, the results indicated that the concentration of chlorophyll (mg/cm2 of leaves) was significantly increased in the plants treated with Trichoderma. Based on regression tests, there was no relationship between percentage of root colonization of Trichoderma and enhanced plant growth.

並列關鍵字

Trichoderma spp. ； biological control ； root exploration ； chlorophyll