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10 September 2003, Volume 32 Issue 03 Previous Issue    Next Issue

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The nutrient elements distribution in Casuarina equisetifolia seedlings under salt stress YANG Tao, YAN Chong-ling, LIANG Jie, LI Yu-hong, TANG Hui-hua 2003, 32(03): 1-4.  Abstract ( )   PDF (163KB) ( )   Based on pot experiments, the distribution of nutrient elements in Casuarina equisetifolia seedlings under salt stress were studied. The results showed that there were obviously effects on growth and distribution of nutrient elements in C. equisetifolia seedlings under salt stress. Low salt content (5g/kg) promoted the growth, while high salt content (20, 25g/kg) inhibited the growth. With the increase of salt content in soil, the contents of nutrient elements such as N, P, K in roots, N, P in stems and N in twigs increased, and the contents of K in stems and twigs and Ca in twigs decreased. It is suggested that the proportion maladjustment of nutrient elements is one of the causes resulted in salt damage. Salt content affected Mg content on a low level. Related Articles | Metrics

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Studies on cytology and reproductive biology in the genus Paspalum MA Guo-hua, ZHAO Nan-xian 2003, 32(03): 5-9.  Abstract ( )   PDF (182KB) ( )   Distribution, florescence, cytology and reproductive modes of the genus Paspalum were studied. The results revealed its cytological characteristics and reproductive diversity. Related Articles | Metrics

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Water balance and some physiological changes in cold-stored cut Gladiolus flowers LIAO Li-xin, PENG Yong-hong, XU De-cheng, ZENG You-wei, XU Liang-xiong 2003, 32(03): 10-15.  Abstract ( )   PDF (225KB) ( )   Water metabolism and some physiological indexes of fresh cut Gladiolus flowers and cold-stored cut Gladiolus flowers in vase were investigated. The results showed that water uptake and water loss of cold-stored cut Gladiolus flowers were less than those of fresh ones at early stage. Compared with fresh cut Gladiolus flowers in the same phase in vase, soluble protein content of petals and bracts in different site of cold-stored cut Gladiolus flowers was lower, MDA content was higher, activities of CAT and POD were lower. Factors that caused the degradation of quality of cold-stored cut Gladiolus flowers were also discussed. Related Articles | Metrics

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Respiration characteristics and quality changes of wampee fruits during storage QU Hong-xia, JIANG Yue-ming, LI Yue-biao, LIN Wen-bin, SU Xin-guo, DUAN Xue-wu 2003, 32(03): 16-20.  Abstract ( )   PDF (158KB) ( )   Using 3 cultivars of wampee (Clausena lansium), i.e. "Large chicken heart", "Small chicken heart" and "Round species" as experimental materials, differences of respiration rate, productive rate of ethylene and quality of wampee fruits as well as their changes during storage at room temperature (28±2℃) were investigated,. The results showed that the rate of edible fruit, contents of total soluble solids and Vc decreased significantly, and rate of weight loss and contents of soluble pectin and protopectin increased significantly. Content of titratable acidity decreased rapidly within 2 days and increased 2 days later. Respiration rate raised remarkably after 4 days of storage, but no respiration climax was observed, which suggested that wampee belonged to the non-respiration climacteric fruit. Respiration rate of "Large chicken heart" was much higher than that of "Small chicken heart" and "Round species" in the late period of storage. Ethylene productive rate of wampee fruits increased within 4 days of storage, and then "Large chicken heart" and "Small chicken heart" decreased apparently while "Round species" continued increasing. Related Articles | Metrics

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Genetic correlation analysis of yield character of Eucalyptus grandis family ZOU Xiao-xing, LIANG Yi-chi, SUN Xiao-xia 2003, 32(03): 21-24.  Abstract ( )   PDF (159KB) ( )   The genetic correlation of characters of E. grandis family was analyzed in this paper. The results showed that different families had highly significant correlations in characters, and the correlation between DBH and volume was more significant than that between height and volume. Genetic correlation coefficients were higher than phenotypic coefficients and it was more effective to select E. grandis indirectly by genetic correlation coefficients. The path analysis revealed that DBH was the most important element to volume of E. grandis individuals. Related Articles | Metrics

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Preliminary study on high grafting techniques of Newhall navel orange with multiple linear stepwise regression ZHOU Kai-bing, XIA Ren-xue 2003, 32(03): 25-27,15.  Abstract ( )   PDF (155KB) ( )   Field experiments were conducted on high grafting techniques of Newhall navel orange on Citrus unshiu interstock and Poncirus trifoliate rootstock. The multiple linear stepwise regression analysis revealed that the canopy volume was positively correlated with the grafting height (37~116cm) 3 years after grafting, the yield efficiency was positively correlated with the grafting height (≤54cm) and was negatively correlated with it when the grafting height was above 54cm. The yield of individual plant had unitary square function relation to the grafting height and it could be used to determine the grafting height. To evaluate the grafting techniques and to calculate the yield, it was feasible for applicating the multiple linear stepwise regression to study the high grafting techniques. Related Articles | Metrics

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Diagnosis of leaf yellowing disease for Huanghua pear plants on red earth ZHENG Hui-zhang, HUANG Xin-zhong, XIE Zhi-nan, LI Jian, XU Wen-bao 2003, 32(03): 28-30.  Abstract ( )   PDF (123KB) ( )   According to the leaf symptoms and the analysis of nutrient elements in leaf and soil, it was determined that the leaf yellowing of Huanghua pear plants in Jianning county of Fujian Province was attributed to Ca deficiency. The Ca level of Huanghua pear plants with yellowing leaves was lower than those of normal plants. It was suggested that Ca deficiency in plants was caused by the low contents of exchangeable Ca and low pH value in soil. Related Articles | Metrics

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Cuttage experiment of main shoot of Ficus microcarpa HE Bing, HUANG Rui 2003, 32(03): 31-34.  Abstract ( )   PDF (126KB) ( )   The survival rate of old shoot cutting of Ficus microcarpa is generally low and the rooting ability is getting lower with the rising of shoot age. Based on the cuttage experiment, some measures for improving the survival rate of F. microcarpa were recommended. They include proper longitudinal carving on the surface of shoot, disinfecting the cutting shoot and the soil, using the growth regulators for rooting, illumination and water management after cutting. Related Articles | Metrics

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Comparative studies on fiber morphology and chemical composition between Toona sinensis wood from plantation and natural forest FAN Zhen-fu, GAO Rui-long, WANG Jie-ling 2003, 32(03): 35-37,34.  Abstract ( )   PDF (157KB) ( )   Based on the determination and comparative analysis of fiber morphology and chemical composition of Toona sinensis from plantation and natural forest, the character of fiber morphology and chemical composition and the law of change in fiber morphology with age as well as differences of fiber morphology and chemical composition between T. sinensis wood from plantation and natural forest were studied. The results showed that T. sinensis from plantation reached technological maturity at about 10 ages. The length of wood fiber, the ratio between length and width, ash and extractive contents of wood were lower than those from natural forest, the width of wood fiber and the contents of cellulose, pentosan and lignin were higher than those from natural forest. T. sinensis wood can be used as fiber material in forest products industry. Related Articles | Metrics

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Investigation on angiosperm plants in Sanqingshan Mountain,Jiangxi Province ZANG Min, BIAN Xin-min 2003, 32(03): 38-41,49.  Abstract ( )   PDF (160KB) ( )   There are 1602 species (varieties and formas) of angiosperm plants in Sanqingshan mountain, Jiangxi Province, which belong to 691 genera and 148 families. Among these 1 300 species, 544 genera and 122 families represent the dicotyledoneae, 302 species, 147 genera and families are the menocotyledoneae. The flora features of angiosperm plants have been evaluated and the rare and endangered plants in Sanqingshan Mountain have been introduced. Related Articles | Metrics

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Resources and utilization of succulents in Xiamen Botanical Garden ZHOU Qun, WANG Cheng-cong 2003, 32(03): 42-46.  Abstract ( )   PDF (180KB) ( )   The status and characteristics of species resources of succulents in Xiamen Botanical Garden are described. The utilization and development value in landscaping, food and medicine industry are also evaluated. Related Articles | Metrics

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In vitro culture of distant hybrid of wild Vitis quinquangularis LU Ta-shan, PENG Hong-xiang, ZHANG Ying, TAN Si-hua, LI Rong-bai 2003, 32(03): 47-49.  Abstract ( )   PDF (126KB) ( )   Stem callus cultures of wild Vitis quinquangularis and its distant hybrids 213, 741, 196, 296 and B2 were used to study the effects of various basal media (MS, 1/2MS and GS) supplemented with different proportions of growth regulators (6-BA 1.0mg/L+IAA 0.1mg/L and 6-BA 1.0mg/L+NAA 0.1mg/L) on germination of axillary buds. The results showed that 1/2MS was optimal for bud induction. The bud germination of wild V. quinquangularis and its distant hybrids (except B2) were inhibited when treated with NAA. The alternate treatment with NAA and IAA could promote the germination of axillary buds. Related Articles | Metrics

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In vitro culture of Begonia×Manni leaves and the establishment of industrialized breeding system WEI Cui-hua, HUANG Qi, CHEN Qin 2003, 32(03): 50-52.  Abstract ( )   PDF (131KB) ( )   The leaves of Begonia×Manni were used for in vitro culture. The results showed that B5 medium is appropriate for the induction of differentiation of leaf-derived adventitious buds. The propagation rate of adventitious buds on the B5+BA 0.5mg/L+IBA 0.05mg/L was 6.06. B5+IBA 0.5mg/L was best for rooting and the rooting rate could reached 100%, the average number of root was 4.5. The results also indicated that regulator-free medium was effective for the growth of healthy plantlet and low concentration of sucrose in culture medium played an important role in maintaining the normal morphology of plantlet. Based on the investigation, a industrialized breeding system of Begonia×Manni was established. Related Articles | Metrics

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Differentiation of some confusable varieties of Chinese herbal medicine LIU Qing-kai 2003, 32(03): 53-56.  Abstract ( )   PDF (145KB) ( )   Based on some literatures and work experiences, 31 confusable varieties of Chinese herbal medicine which were divided into 13 groups were differentiated in this paper. The biological characteristics, vegetative characters and medicinal values of these herbs were also introduced. Related Articles | Metrics

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Study on reproductive growth of Cattleya LU Fu-bing, WANG Bi-qing 2003, 32(03): 57-58.  Abstract ( )   PDF (88KB) ( )   Related Articles | Metrics

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A review of recent advances in TDZ CHEN Xiao-Ying, YE Qing-Sheng, LIU Wei 2003, 32(03): 59-63,58.  Abstract ( )   PDF (130KB) ( )   TDZ (Thidiazuron) is widely applicated in plant tissue culture, and a number of physiological and biochemical features in plants are likely to be influenced by TDZ. The recent researches are clearly beginning to reveal the details of a variety of underlying mechanisms. TDZ plays a role in modulation of the endogenous plant growth regulators either directly or as a result of induced stress. The current advances on biochemical mechanism of TDZ are reviewed in this paper. Related Articles | Metrics

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A review of strategy to enhance the production of secondary metabolites by plant cell culture REN Zhi-hua, LI Ling 2003, 32(03): 64-67.  Abstract ( )   PDF (137KB) ( )   The ways to enhance the production of secondary metabolites by plant cell culture are reviewed in this paper. Related Articles | Metrics

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A review of research on Anoectochilus roxburghii CAI Wen-yan, XIAO Hua-shan, FAN Xiu-zhen 2003, 32(03): 68-72.  Abstract ( )   PDF (153KB) ( )   In this paper, researches on the rare medicinal herb Anoectochilus roxburghii including biological characteristics, distribution, medicinal value, ingredient analysis, molecular studies, tissue culture and cultural practices are reviewed. It provides a scientific basis for further study, development and utilization of A. roxburghii. Related Articles | Metrics

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A review of phytoremediation to chemical air pollution and plant species selection for greening LU Hai-qiang, LIU Fu-ping 2003, 32(03): 73-77.  Abstract ( )   PDF (151KB) ( )   The process and mechanism of phytoremediation to chemical air pollution are introduced in this paper. The main measures and the tolerance index for the research in pollutant-resistant ability of plants, and the scientific basis of plant species selection for greening are described. Related Articles | Metrics