叢枝菌根菌Acaulospora scrobiculata對羅氏鹽膚木苗木生長之效應

自雲林縣古坑鄉草嶺崩塌地區，羅氏鹽膚木根圈土壤中分離出優勢叢枝菌根菌，Acaulospora scrobiculata，經繁殖後，接種至羅氏鹽膚木苗木，7個月後，觀察對苗木之苗高、根頸直徑、生物量、葉面積、葉片數及節間長度之影響。叢枝菌根菌A .scrobiculata可與羅氏鹽膚木苗木根部形成良好之叢枝菌根，單一介質接種組(P1M1)苗木平均苗高淨生長量36.00±1.85 cm、根頸直徑淨生長量6.88±0.32 mm、總乾重28.89±1.50 g、總葉面積1596.70±72.15 平方公分、葉片數55.67±1.15片、節間長度3.25±0.29 cm，均顯著高於單一介質未接種組(P1M0)者之平均苗高淨生長量18.63±0.83 cm、根頸直徑淨生長量5.45±0.22 mm、總乾重14.40±0.40g、總葉面積966.77±46.37平方公分、葉片數46.33±1.53片、節間長度2.25±0.29 cm。且混合介質之生長也比單一介質為佳。本研究證實叢枝菌根菌A. scrobiculata可有效促進羅氏鹽膚木苗木之生長。

關鍵字

叢枝菌根菌； Acaulospora scrobiculata ；羅氏鹽膚木

並列摘要

The objective of this study was to examine the effects of mycorrhizal fungi on growth of Rhus chinensis seedlings. Rhus chinensis seedlings were inoculated with a dominant arbuscular mycorrhizal fungus, Acaulospora scrobiculata, which was isolated from the rhizosphere of Rhus chinensis growing in the landslide of Chao-Ling, Gu-Keng, Yun-Lin county. After seven months of incubation, roots of Rhus chinensis seedlings were found to form arbuscular mycorrhiza with A. scrobiculata. The averaged net height (36.00±1.85 cm), net root collar diameter (6.88±0.32 mm), total dry weight (28.89±1.50 g), leaf area (1596.70±72.15 cm^2), leaf blades length (55.67±1.15 cm), and internode length (3.25±0.29 cm) of single-medium inoculated seedlings (P1M1) were significantly higher than the single-medium non-inoculated ones (P1M0) which had averaged net height (18.6±0.83 cm), net root collar diameter (5.45±0.22 mm), total dry weight (14.40±0.40 g), leaf area (966.77±46.37 cm^2), leaf blades length (46.33±1.53 cm), and internode length (2.25±0.29 cm). The growth of the seedlings was greater in mixed medium than in single medium. This study showed that A. scrobiculata could stimulate the growth of Rhus chinensis.

並列關鍵字

Arbuscular mycorrhizal fungus ； Acaulospora scrobiculata ； Rhus chinensis

國際替代計量

叢枝菌根菌Acaulospora scrobiculata對羅氏鹽膚木苗木生長之效應

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