Effect of root trimming on physiological function and root regeneration of four native tree species

• Main Authors: Liao, Fane-ching, 廖芳瑾
• Other Authors: Sheu Bor-Hung
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/03819724131480796270

碩士 === 國立中興大學 === 森林學系 === 86 === The afforestation by seedling often have a question that low survive and grow reduce after transplant to made. And the seedling transplant receives a best rush is that the root system broken and reduced water and nutrient absorb. The water and nutrient absorb reduced is easy made. Water stress in plant and influence photosynthesis. Bischofia javanica cutting root in September and in December have the same survive is 100％, no matter cutting root degree, the cutting root team the same as no cutting root team in water potential in daybreak. But cutting root in September have higher grow measure, and smaller physiological restrain. It is difficulties to made water stress in plant, therefore it is best suit transplant Bischofia javanica in September. When cutting root in December, softly cutting root is not make restrain in grow measure and physiological, but serious cutting root is made. Bischofia javanica''s new root growth not only cutting in September but also cutting in December, the new root growth in after cutting root five days, and it is not influence by cutting month and cutting level. Moreover, in after cutting root five days, the stem and root''s free IAA measure is higher in after cutting root ten days. Ardisia squamulosa cutting root in September and in December have the same survive is 100％, no matter cutting root degree, the cutting root team the same as no cutting root team in water potential in daybreak. Ardisia squamulosa cutting root in September and December is also produce water stress in plant, but it is best serious is December. So transplant Ardisia squamulosa is best in September. When transplant, it is more serious injured in root system the more inhibition growth. Ardisia squamulosa''s new root growth speed id the same with Bischofia javanica ,the new root growth in after cutting root five days, and it is not influence by cutting month and cutting level. Moreover, Ardisia squamulosa cutting root in September and in after cutting root five days, the stem and root''s free IAA measure is higher in after cutting root ten days. Gordonia axillaris have obvious brown and rotten in root system transplant in September, and it is the best serious is transplant not cutting root team, therefore it is have more grow measure, survive and smaller physiological restrain by appropriate cutting root after transplant in September. But no matter cutting root in September or in December, and no mater cutting root degree, the cutting root team the same as no cutting root team in water potential in daybreak. If transplant Gordonia axillaris in December have to reduce the root system break. Cutting root in December have higher survive and the better growth measure. Gordonia axillaris''s new root growth speed is not only cutting root in September but also cutting root in December is the same growth in the fifth day until the tenth day, and it is not influence by cutting month and cutting level. No matter cutting root degree, Sophora tomentosa, the cutting root team the same as no cutting root team in water potential in daybreak. Although it is smaller grow measure, but the survive is 100％by cutting root in September, and the physiological restrain is occur in fourthly week after cutting root. It is more grow measure and reduced the physiological restrain by appropriate in transplant in September. But transplant Sophora tomentosa in December, have to reduce of root amount and root wounded, serious cutting root led to the survive down and produce serious physiological inhibit. Sophora tomentosa have leaf lose in when cutting root in September and December, and it is serious in December, and it is serious in cutting root length''s 3/4. It is show that the Sophora tomentosa have water stress, led to survive down. Sophora tomentosa''s new root growth speed is not only cutting root in September but also cutting root in December is the same growth in the fifth day until the tenth day, and it is not influence by cutting month and cutting level. The stem and root''s free IAA the same as Sophora tomentosa''s new root growth.