Study on the arbuscular mycorrhizal fungi community ofCinnamomum kanehirae Hayata and inoculation ofcuttings

• Main Authors: Po-Shun Chang Liao, 張廖伯勳
• Other Authors: Chiang Her Yen
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/29129978273952220968

碩士 === 國立中興大學 === 森林學系所 === 102 === Cinnamomum kanehirae Hayata is an endemic precious tree species to Taiwan. The effect of cultivation by nursery cuttings was quite good but the survival rate of plantation was low and prone to the situation of growth retardation. We assumed it was related to the growing media of seedlings. To solve the predicament of plantation by C. kanehirae cuttings, this study investigated arbuscular mycorrhizal fungi in the soil and root system of C. kanehirae forest, either from artificial forests and natural forests in central Taiwan, to understand the relationships among the soil property of the habitat, the composition of arbuscular mycorrhizal fungi, mycorrhizal community and environmental factors. Parts of the dominant arbuscular mycorrhizal fungi species (Acalospora mellea, A. morrowiae and Septoglomus constrictum) in the habitat would then be selected for trial inoculations with C. kanehirae cuttings under forest soil, coal mine spoil and farm soil. Hope to provide suggestions for future forestation of C. kanehirae and to increase its effect. The results showed that the habitat soil was affected by man-made management. There was significant difference for soil available phosphorous between artificial and natural forests. Soil available phosphorous was negatively correlated with sporulation. A total of 12 genera and 21 species of arbuscular mycorrhizal fungi were found the 14 C. kanehirae forest samples, among which Glomus deserticola, A. mellea, Se. constrictum and Sclerocystis rubiformis were most widely distributed. By matrix cluster analysis, principle component analysis and redundancy analysis, one dominant type and 5 non-dominant types were isolated, indicating that the differentiation of mycorrhizal community was affected mainly by environmental factors, including altitude, soil available phosphorous, exchangeable potassium, pH value and total soil nitrogen. After inoculating C. kanehirae cuttings with mycorrhizal fungi, it could improve functions, including net height growth, total net leaf area, total dry weight, S/R ratio, mycorrhizal dependency and nutrition absorption ability.