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10 June 2007, Volume 36 Issue 02 Previous Issue    Next Issue

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Studies on Aroma Compounds of ‘Zill’ Mango at Fruit Maturity Stage WEI Chang-bin, MA Wei-hong, WU Hong-xia, WANG Song-biao, SUN Guang-ming 2007, 36(02): 1-3.  Abstract ( )   PDF (225KB) ( )   Determination on aroma compounds of Zill mango with headspace solid-phase micro-extraction (HP-SPME) and GC-MSD showed that 22 aroma compounds were detected at the commercial ripe stage and ripening stage of mango, and there were 14 and 10 aroma compounds at the commercial ripe stage and ripening stage, respectively.There were mainly terpenes、aldehydes and acids in all detected compounds.α-myrcene, α-humulene were all detected at the two stages of mango, but their contents were different at the two stages.The main aroma compounds were (+)-2-carene at the commercial ripe stage and δ-3-carene at the ripening stage. Related Articles | Metrics

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The Traits of Leaf Lifespan of 51 Evergreen Broad-leaved Species and Analysis on the Influencing Factors of Mt.Meihuashan, Fujian Province TIAN Yu-peng, CAI Yong-li, WANG Hong-wei, LIU Zhi-guo, QIU Yun-xing, CHEN Zhao-feng 2007, 36(02): 4-8.  Abstract ( )   PDF (286KB) ( )   In order to study the characteristics of the leaf lifespan and its influencing factors, the authors chosed 51 evergreen broad-leaved species in Meihuashan Mountain of Fujian Province as research objects.The lifespan was studied by using life-table method.The results were as follows:(1) The leaf lifespan of 51 evergreen broad-leaved species mostly ranged from 1 to 1.5 years and from 2 to 2.5 years.The leaf lifespan of Vaccinium bracteatum was the shortest (0.64a), and the leaf lifespan of Machilus oreophila was the longest (3.66a).The leaf lifespan varies 4.71-fold between them.(2) In regard to the average value, the leaf lifespan of shrubs was 2.01 years and followed by that of large trees (1.97a), the small trees was 1.83a.(3) Among the 51 plant species, the leaf lifespan of dominant species (1.65a) were shorter than that of companion species (2.02a), and the leaf lifespan of sun plants (1.88a) were shorter than that of shade plants (2.15a).(4) The leaf lifespan of the same species became longer with the increasing of altitude, this is the life history countermeasure of improving the capability of gaining carbon, and also is the results of adapting to the environment. Related Articles | Metrics

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The Genetic Relationship among Common Loquat, Daduhe Loquat and Oakleaf Loquat, According to RAPD and AFLP Analysis YANG Xiang-hui, LIU Cheng-ming, LIN Shun-quan 2007, 36(02): 9-12.  Abstract ( )   PDF (328KB) ( )   Twenty-four random primers and 5 AFLP primer-combinations were used to assess the genetic relationship among common loquat, Daduhe loquat and Oakleaf loquat by RAPD and AFLP analysis.The results showed that genetic relationship between common loquat and Oakleaf loquat was the least, Daduhe loquat was located in between common loquat and Oakleaf loquat, and more close to Oakleaf loquat.On the other hand, we calculated the band's additivity when common loquat, Daduhe loquat and Oakleaf loquat were viewed as putative hybrid, the outcome suggested that in RAPD or AFLP analysis, the band's additivity was the highest when using Daduhe loquat as putative hybrid and the additivity was decreased when common loquat or Oakleaf loquat were examined as the hybrid.The results above suggested that Daduhe loquat is perhaps a hybrid from common loquat and Oakleaf loquat. Related Articles | Metrics

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Study on Genetic Stability of Cymbidium goeringii Seedlings in Vitro by ISSR Markers GAO Li, YANG Bo, LI Hong-lin 2007, 36(02): 13-14.  Abstract ( )   PDF (228KB) ( )   Inter-simple sequence repeats (ISSR) markers were used to investigate genetic stability for clonal plants of Cymbidium goeringii with verge line pattern leaves.The results showed that the culture clonal plants appeared without variations as compared with their original plants in substance of heredity and had no difference on the level of DNA. Related Articles | Metrics

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Effect of Exogenous ABA on Adventitious Root Formation in Hypocotyl Cuttings of Mung Bean WAN Xiao-rong, GUO Dong-liang, XIE Zi-hua, LIU Ling, LI Ling 2007, 36(02): 15-18.  Abstract ( )   PDF (420KB) ( )   Pre-treatment of germinating seeds of mung bean with 10-4 mol/L of abscisic acid (ABA) significantly promoted adventitious root formation from rooting zone of hypocotyl cuttings of mung bean.Root number and rooting zone from each 4-day-old cutting were increased by 174% and 45%, respectively, when compared with those of the control cuttings.The enzyme activities of tryptophan aminotransferase, indole pyruvate decarboxylase and indole acetaldehyde dehydrogenase (three enzymes involved in indole acetic acid biosynthetic pathway) in rooting zone of 4-day-old hypocotyl cuttings, were increased by 49.1%, 90.6% and 105.4%, respectively, resulting in a 63.9% increase of IAA content, when compared with those of the control cuttings.Cell number in S-phase of a cell cycle in the rooting zone of 2-day-old cuttings was increased by 13% with the treatment of 10-4mol/L ABA.These results suggested that ABA was possibly promoted adventitious root formation by stimulation of DNA and IAA synthesis. Related Articles | Metrics

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Study on the Chemical Constituents of Lysimachia congestiflora WANG Ding-yong, LIU En-gui, FENG Yu-jing 2007, 36(02): 19-21.  Abstract ( )   PDF (261KB) ( )   Seven compounds were isolated from Lysimachia congestiflora and identified as stigmasterol (1), eugenin (2), quercetin (3), myricetin (4), myricitrin (5), taraxerol (6) and myricanone (7) by means of spectral analysis.Compounds (2), (6), (7) were obtained from the plant for the first time. Related Articles | Metrics

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Influencing Factors of Adsorbing and Separating Total Flavonoids from Scurrula parasitica by AB-8 Macroporous Resin GUO Jing, LI Ting, CHEN Bing-hua, CAI Wan-ling, BAO Wei-xia, HUANG Wei-wei 2007, 36(02): 22-26.  Abstract ( )   PDF (294KB) ( )   Influencing factors of static adsorption and dynamic desorption by AB-8 macroporous resins for total flavoniods from Scurrula parasitica were studied, and effects of concentration of sample of extract solution and pH value, surroundings temperature and oscillatory rate on static adsorption capacity, and effects of ethanol concentration on dynamic elution were systematically analyzed.The results showed that concentration of sample and pH value of extract solution had significantly effect on resin absorption properties.The technological conditions of adsorption and desorption for total flavonoids were as follows:the concentration of extract 1.2~2.0 mg/ml;pH 3.0~4.0;the oscillatory rate 160r/min;room temperature;adsorption time 2~3 h;the eluting regent 50% ethanol (5 folds the volume of the resin);eluting rate 1.5 ml/min.Under the optimal conditions, the maximum adsorbing capacity of AB-8 resin for total flavoniods was 29.0 mg/g, with the dynamic elution ratio of 95.0%, the purity of flavonoids obtained was 46.0% and yield 5.5% as well. Related Articles | Metrics

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Distribution Pattern of Cyclosorus acuminatus Population in Longwangshan Mountain, Hubei Province FANG Yuan-ping, WANG Zhi-fei, XIANG Jun 2007, 36(02): 27-30.  Abstract ( )   PDF (275KB) ( )   The coverage and densities of Cyclosorus acuminatus populations in different habitats was investigated by the successive sampling.The distribution pattern of C. acuminatus was determined according to the calculation of the deviation coefficients and t-test.The results showed that the population of C. acuminatus was observed to be gregarious distribution, with patches of 3.0~3.5 m.The developing trend of C. acuminatus population was estimated. Related Articles | Metrics

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The Analysis of Species Composition of Urban Forest in Zhanjiang City WU Liu-ping 2007, 36(02): 31-35.  Abstract ( )   PDF (303KB) ( )   The survey investigated the 100452 individual trees at 159 sites of roadside niches, urban parks and institutional ground.Compared by the species diversity, species composition, relative abundance (RA), species importance (SI), the results were as follows.(1) There were 204 tree species belonging to 52 families of Zhanjiang urban forest, the species diversity was abundant.The species composition of urban forest was influenced significantly by the different land uses, habitats and urban cultures, etc.(2) The species composition reflected the character of zonal flora of the tropical monsoon forest.Exotic group had 96 species and the exploitation of native trees was not enough.(3) Most trees were derived from a small group of dominant species.The RA of the former 25 species at roadside was 89.66 and there were the most uncommon species in parks.(4) There were only 26 species of SI (species importance)>1.Seven key species reflected the basic feature of Zhanjiang urban forest. Related Articles | Metrics

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Introduction and Effects of Different Harvest Way on the Yield and Quality of New Bulb of Curcuma alismatifolia YE Xiu-xian, HUANG Min-ling, CHEN Yuan-quan, WU Jian-she, LIN Bing 2007, 36(02): 36-38.  Abstract ( )   PDF (157KB) ( )   Through the experiment, the adaptability of introduction and cultivation of Curcuma alismatifolia were observed in Fuzhou, and the effects of the different harvest way of cut flower on the yield and quality of new bulbs were studied.The results showed that Curcuma alismatifolia grew well in open ground and the reproductive rate of bulbs was 3.6;the harvest way with one leaf on the cut flower result in the best yield and quality. Related Articles | Metrics

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Preliminary Study on Establishing Aseptic Strain in Rhododendron simsii WU Lian-song, CHEN Gui-xin 2007, 36(02): 39-41.  Abstract ( )   PDF (143KB) ( )   The terminal bud of Rhododendron simsii was used as explants to study the influence on establishing an aseptic strain by the different color of flowers, the different disinfect time and the different hormone combinations in medium.The results showed that the surface disinfection of 0.1% HgCl2 for 10 minutes was best for the explants.Under the same disinfecting condition, the ratio of pollution of white flower type was lower than that of red-flower type, the ratio of browning of red-flower type was lower than that of white-flower type.The initial culture medium with high concentration of ZT resulted in low browning ratio of the explants. Related Articles | Metrics

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The Determination of Imidacloprid Residue in Vegetable Soybean by High-performance Liquid Chromatography CAI En-xing 2007, 36(02): 42-44.  Abstract ( )   PDF (246KB) ( )   An analytical method of imidacloprid residue in vegetable soybean by high-performance liquid chromatography (HPLC) was developed.The vegetable soybean sample was extracted with dichloromethane by ultrasonic method purified through aluminium oxide chromatography column and cleaned up with petroleum ether to remove some fatty impurities.The HPLC conditions were Agilent TC-c18 column, 0.2% Acetic acid liquor-Acetonitrile=70:30(V/V) as mobile phase, and UV detection at 270 nm.The foritified recoveries of imidacloprid in vegetable soybean samples were ranged from 84.0% to 102.8%, and the relative standard deviation (n=6) was 6.8%~10.9%.The minimum detectable concentration in the sample was 0.003 mg/kg. Related Articles | Metrics

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Evaluation of Heavy Metal Contamination in Vegetable Soils of Zhangzhou, Fujian Province LIN Xiang-hua 2007, 36(02): 45-47,50.  Abstract ( )   PDF (190KB) ( )   The contents of heavy metals as Cd, Pb, Hg, Cr and As in vegetable soils of Zhangzhou were investigated and the heavy metal contamination was evaluated by taking the ways of single pollution index and complex pollution index.It showed that, by taking the background value of soil of Fujian as the evaluation standard, soils of some vegetable lands of Zhangzhou were polluted by heavy metals with a pollution order of single pollution index as Cd (2.39) >Hg (2.00) >Pb (1.40) >Cr (0.63) >As (0.57) and the main pollution elements were Cd, Pb and Hg of which the pollution of Cd and Hg ranked medium grade, meanwhile the complex pollution index was 1.75 which ranked light grade.By taking the second grade standard of soil environmental quality as the evaluation standard, the complex pollution index was 0.14, belonging to non-pollution grade. Related Articles | Metrics

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Study on Nursery Technique for Spondias cytherea LIN Jie, YAN Yang-dong, CHEN Deng-xiong, ZHANG Qing-mei 2007, 36(02): 48-50.  Abstract ( )   PDF (149KB) ( )   Nursery technique of Spondias cytherea was studied.The results showed that the fruits were not suitable for raising seedlings;the ripe seeds had higher germination percentage;in container nursery, seedlings could avoid being damaged and be transplanted easily.Maintained high soil humidity, 80~90% relative humidity of air, and 30% shade density were favorable for germination and growth of seedlings. Related Articles | Metrics

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Study on Wild Poisonous Plants in Laoshan Mountain, Shandong Province WANG Sen-lin, GAO De-min 2007, 36(02): 51-55.  Abstract ( )   PDF (206KB) ( )   The poisonous wild plants in Laoshan Mountain of Shandong Province, about 123 species belonging to 94 genera in 50 families were described.The poisonous wild plants are about 11.5% of wild plants in Laoshan Mountain.These plant resources were evaluated and their strategies on protection and exploitation were put forward. Related Articles | Metrics

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The Ornamental Character of Bamboos and Artistic Means of Landscape Architecture CHEN Jun, CHEN Xian-de 2007, 36(02): 56-59,64.  Abstract ( )   PDF (256KB) ( )   The ornamental characters of bamboo were described and the artistic measures with essential factors for landscaping were discussed in this paper.Some principles of landscape architecture of bamboo were also proposed. Related Articles | Metrics

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Resources of Red-leaf Plants and Their Application to Landscape in Pan'an County, Zhejiang Province YANG Hai-jun, WANG Xiang-long 2007, 36(02): 60-64.  Abstract ( )   PDF (284KB) ( )   The investigation on the red-leaf plants resources and their application to landscape in Pan'an county of Zhejiang Province, showed that there were 37 species of red-leaf trees, belonging to 26 genera and 19 families.These trees included arbor, shrub and vine, and deciduous arbors occupied most part of the red-leaf trees by the ration 56.8%.According to the changes of the color of the leaves, these trees could be divided into 4 types, including the trees with leaves turned to red in autumn, the trees with red tender leaves, the trees with red tender leaves and leaves changed red in autumn, and the trees with red leaves over years.The trees with leaves changed red in autumn were dominant, and occupied 70.3% of all red-leaf trees in the county. Related Articles | Metrics

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In vitro Cultrue and Plantlet Regeneration of Cymbidium goeringii LI Li, LUO Jun-qin 2007, 36(02): 65-66.  Abstract ( )   PDF (140KB) ( )   Related Articles | Metrics

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Tissue Culture of Dendrobium strongylanthum LI Hong-lin, GAO Li, YAO Jun, YANG Bo 2007, 36(02): 67-67.  Abstract ( )   PDF (84KB) ( )   Related Articles | Metrics

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Progress of Studies on Sex Determination in Three Model Plants XU Ji-ming, XIANG Tai-he 2007, 36(02): 68-72.  Abstract ( )   PDF (210KB) ( )   The progress of sex determination of model species such as Silene latifolia, Zea mays and Cucumis sativus were reviewed.According to the finished study of sex determination, the further work was proposed. Related Articles | Metrics

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Advances in the Research of Lycoris LINGHU Yu-wei, LI Duo-wei 2007, 36(02): 73-76.  Abstract ( )   PDF (182KB) ( )   This article focuses on the advances and some important results about the resources distribution, chemical constituents, extraction and separation, pharmacological action, introduction and domestication, ecological benefit and garden application in Lycoris.Some suggestions for the resources development and sustainable utilizations of Lycoris were put forward. Related Articles | Metrics

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Recent Advances in Jackfruit (Artocarpus heterophyllus) LI Rui-mei, HU Xin-wen, GUO Jian-chun, HE Ying-dui 2007, 36(02): 77-80.  Abstract ( )   PDF (183KB) ( )   This paper presented the advances of Jackfruit (Artocarpus heterophhyllus Lam.), from their phytomorphology and resources, their biological characteristics and breeding, their nutrition and pharmacology and development, and aimed at driving the development of Jackfruit in the tropics and subtropics of our country. Related Articles | Metrics