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10 June 2002, Volume 31 Issue 02 Previous Issue    Next Issue

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Studies on the activities and isoenzymes of peroxidase and polyphenoloxidase in Acacia mangium clones WU Guang-hong, ZHAN Fu-jian, HUANG Zhuo-lie, LUO Huan-liang, ZHAO Feng 2002, 31(02): 1-5.  Abstract ( )   PDF (412KB) ( )   The activities of peroxidase (POD) and polyphenoloxidase (PPO) and both isoenzymes from two clones (P and Q) of Acacia mangium were studied. The results showed that the activities of both enzymes varied significantly in the same organ of different clones and in different organs of the same clone. The experimental results indicated that the isoenzymes of POD and PPO from two clones have same characteristic spectrum and also have their respective spectra in different organs. Related Articles | Metrics

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Study on the bryophytes resources in Matoushan Nature Reserve,Jiangxi Province JI Meng-cheng, WANG Jing, CHEN Yong-jun 2002, 31(02): 6-12.  Abstract ( )   PDF (219KB) ( )   Matoushan Nature Reserve is situated in the middle of Wuyi Mountains, northeast Zixi County, Jiangxi Province. There exists 267 species (including 1 subspecies and 1 variety) under 149 genera, 69 families of bryophytes identified in this nature reserve. According to their economic purpose, the bryophytes resources can be classified into 4 types, i.e. medicinal plant resources, horticultural plant resources, bio-indication plant resources to environmental pollution and winter hosts (mosses) of gallnut aphids. The essential characteristics of bryophytes in Matoushan Nature Reserve are described and some suggestions for protection and exploitation of wild bryophytes resources are put forward. Related Articles | Metrics

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Effects of different thinning measures on the growth of Manglietia yuyuanensis CHEN Dong-hua 2002, 31(02): 13-17,24.  Abstract ( )   PDF (407KB) ( )   The growth of Manglietia yuyuanensis in mixed plantations of China fir and Manglietia yuyuanensis was varied significantly by different thinning measures. It was found that 9th year after planting was the optimal time for the first thinning and timely thinning could lengthen the prime stage of Manglietia yuyuanensis growth and increased the increment of DBH, height and volume. For example, 17 year-old trees were still in fast-growing period. For first thinning at 12th year after planting, the stand density was higher than that at 9th year, the growth was inhibited and the fast growing period was shortened. The proper time for first thinning and proper stand density were important for the effective management of mixed plantations. Related Articles | Metrics

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Studies on the chemical constituents of Clinopodium gracile seed LIN Wen-qun, CHEN Jin-ling, WU Hui-ping, LIU Jian-qiu, CHEN Zhong 2002, 31(02): 18-20.  Abstract ( )   PDF (289KB) ( )   The chemical constituents of Clinopodium gracile seeds have been studied. The results showed that the seed is rich in fatty oil (23.25%) and the main constituents in fatty oil are α-Linoleni acid 66.929%, linolic acid 21.813% and oleic acid 4.596%, the total content of unsaturated fatty acid reaches 93.186%. Eighteen amino acids and eighteen mineral elements are also determined. The seed of Clinopodium gracile has high nutritive and medicinal values. Related Articles | Metrics

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Extraction of flavonoids from stems and leaves of Scurrula parasitica SU Yan-ping, LIU Yu-mei, CHEN Bing-hua, LIU Jian-qiu 2002, 31(02): 21-24.  Abstract ( )   PDF (156KB) ( )   Extraction process of flavonoids from stems and leaves of Scurrula parasitica was studied. Extract of flavonoids from stems and leaves of S. parasitica was filtered with ethanol and purified with polyamide. Using color-developing method, flavonoids were measured with aluminium nitrate that was quantitated at 510nm. For orthogonal experimental design, rutin was used as a standard compound. The results showed that the optimal conditions for extraction from leaves were 70% ethanol, ratio of material to solution (W:V) 1:35, and extracted for 3h at 80℃; and for extraction from stems were 50% ethanol, ratio of W to V 1:15 and extracted for 3h at 80℃. The average yield of flavonoids from leaves and stems were 9.47% and 5.25%, respectively. Related Articles | Metrics

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Study on anatomy of Heptacodium minconioides XU Gen-di, LIU Peng, FANG Yi 2002, 31(02): 25-29.  Abstract ( )   PDF (1346KB) ( )   The anatomical structures of root, stem, leaf and bud of Heptacodium minconioides were observed and the comparison to Viburnum odoratissmum var. awabuki was studied. The results showed that they are identical in general structure:the pith of their stems are strong and developed, leaves are all dorsiventral, palisade tissue cells are two layers and stomatos are found on the lower surface of the lamina, glandular hairs are on the surface of the lamina. Both the species differ mainly in the following structures:the root hairs of H. minconioides are obviously less than those of V. odoratissmum var. awabuki, the shape of their young stems and the shape of the vascular bundle in their stems are different from each other, and the palisade cells of H. minconioides are placed more orderly than those of V. odoratissmum var. awabuki. Related Articles | Metrics

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The wild economic plant resources in Natural Reserve Region of Headwater of Min River,Fujian Province LIU Jian-qiu, CHEN Bing-hua, FANG Yu-lin, LIN Wen-qun, SU Yan-ping, LIU Yu-mei 2002, 31(02): 30-34.  Abstract ( )   PDF (166KB) ( )   Natural Reserve Region of Headwater of Min River is located in the southwest of Jianning county, Fujian Province. On the basis of investigation, there exists 1 058 species and 20 subspecies (or varieties) under 635 genera, 168 families. According to their economic purpose, these wild plants can be divided into 11 types, i.e. fibre plant, tanning plant, fragrant plant, fat plant, starch plant, ornamental plant, honey plant, resin and gum plant, pigment plant, medical plant, rare and endangered plant. Some suggestions to protect and develop the wild plant resources of this nature reserve are proposed. Related Articles | Metrics

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Wild ornamental plant resources in Baiyun Mountain,Zhejiang MEI Xiao-man, LIU Peng 2002, 31(02): 35-39.  Abstract ( )   PDF (166KB) ( )   Situated in the south of Zhejiang Province, Baiyun Mountain is abundant in wild ornamental plant resources. According to the investigation, the characteristics, diversity and distribution of the plant resources are described. There are 792 species of wild ornamental plants under 115 families and 400 genera, including 168 species of trees, 172 species of shrubs, 104 species of vines and 346 species of herbs. Some suggestions for protection and utilization of the wild ornamental plant resources are discussed. Related Articles | Metrics

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Application of Leucaena leucocephala leaves as nitrogen source in the cultivation of edible fungi GUO Cui-ying, LIU Fu-ping, CHEN Fang-shun, HUANG Wei-nan 2002, 31(02): 40-43.  Abstract ( )   PDF (144KB) ( )   The leaves of Leucaena leucocephala were used as nitrogenous additive instead of to partly or wholly rice bran or wheat bran in the media for six kinds of edible fungi. The result showed that Leucaena leucocephala leaves could accelerate the hyphae growth. The yield of Flammuliua velutipes increased when the medium was added with 10% Leucaena leucocephala leaves and 17% wheat bran; the media added with Leucaena leucocephala leaves (10% or 20%) increased the yields of Auricularia polytricha, Pleurotus sajor-caju, Auricularia auricula, Lentinus edodes and Pleurotus florida by 11.4%-39.1%. Related Articles | Metrics

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Integrated control of Oligia vulgaris on Acidosasa edulis HU Feng-yu 2002, 31(02): 44-47.  Abstract ( )   PDF (475KB) ( )   Bionomics and damage characteristics of Oligia vulgaris on Acidosasa edulis were described. Based on the productive practice, integrated control methods of Oligia vulgaris on Acidosasa edulis were put forward. Related Articles | Metrics

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Effects of grafting methods on survival rate of Zizyphus mauritiana HUANG Zhi-fu 2002, 31(02): 48-50.  Abstract ( )   PDF (106KB) ( )   April to June is the optimum time for grafting of Zizyphus mauritiana. The results showed that cut grafting was the best method for young stock (6 months); for 2-year bearing tree, side grafting with short scion and bud grafting were good for regeneration. Related Articles | Metrics

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Survival rate and growth of young Chinese olive grafted seedlings XU Chang-tong, WU Qun-zhong 2002, 31(02): 51-53,69.  Abstract ( )   PDF (136KB) ( )   The effects of varieties, grafting methods, storage time of scion, maturity grade of scion and weather on the survival rate and growth of young Chinese olive grafted seedlings were studied. The results showed that 1-2 year-old scion grafted within 2 days in sunny day is favorable for Chinese olive seedlings. Different varieties varied greatly in survival rate and growth of young grafted seedlings. Related Articles | Metrics

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Current status of rare and endangered plants in Wenzhou Botanical Garden LEI Hai-qing 2002, 31(02): 54-57.  Abstract ( )   PDF (132KB) ( )   After more than thirty years' work, 44 species of rare and endangered plants were successfully ex-situ conserved in Wenzhou Botanical Garden and most of them grow well. According to their adaptability and development value, some plants were recommended as popularized varieties. Related Articles | Metrics

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Advances in tissue culture and genetic engineering of ornamental plants PENG Ai-hong, HE Yong-rui, ZOU Xiu-ping, XU Lan-zhen, ZOU Shao-bing 2002, 31(02): 58-63.  Abstract ( )   PDF (198KB) ( )   The latest advances in tissue culture and genetic engineering of ornamental plants were reviewed in this paper. Related Articles | Metrics

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A review of advances in physiological function of boron in plants SHI Yi-hua, LIU Peng 2002, 31(02): 64-69.  Abstract ( )   PDF (188KB) ( )   The advances in research of physiological function of boron in plants are reviewed. Boron is related to many metabolic activities in plants and plays an important role in the stability of cellular structure. But the physiological function of boron is indirect in these metabolic activities and its mechanism should be further examined. Some suggestions for further studies of physiological function of boron are also proposed. Related Articles | Metrics

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A review of progress in stress physiology in litchi XIAO Hua-shan, LU Liu-xin 2002, 31(02): 70-74.  Abstract ( )   PDF (164KB) ( )   The advances in stress physiology of litchi are reviewed, which include changes of growth and development, biochemistry and physiology under the stress condition, such as temperature, water, mineral nutrition and environmental pollution. The main causes of low yield of litchi are pointed out and some suggestions for further study are also put forward. Related Articles | Metrics