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10 March 1996, Volume 25 Issue 01 Previous Issue    Next Issue

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Nutrient Diagnosis of Citrus,Longan and Litchi as a Guidance in Correction for the Symptom of Nutrition Disorder Zhuang Yimei, Wang Renji, Xie Zhinan, Xu Wenbao 1996, 25(01): 1-7.  Abstract ( )   PDF (427KB) ( )   Based on the criteria of diagnosing nutrient status of subtropical frui trees and orchard soil (Citrus,Longan and Litchi),the effect of correction for symptomof nutrition disorder guiding by technology of nutrient diagnosis was discussed. Related Articles | Metrics

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Effects of Exogenous Cholesterol on Mcmbrane Lipids and Cold Resistance of Rice Seedlings Lai Menghong, Guo Jinquan, Chen Wentao 1996, 25(01): 8-12.  Abstract ( )   PDF (290KB) ( )   The changes of membrane lipids and their fatty acids of rice seedlings were measured before and after low temperature stress. The results indicated that when the rice seedlings were sprayed with cholesterol,then stressed by low temperature,the reductions of LPC,PS,PG,linolenic acid (18:3) and IUFA and the additions of PA and palmitic acid (16:0) were less than those of the control both in leaves and roots. This result suggests that the sensitivity of rice seedlings to cold stress is closely related to PA and their unsaturated fatty acids component.Treating with exogenous cholesterol not only can prevent mernbrane lipids from chilling injuries but also enhance the cold re-sistance of rice seedlings. Related Articles | Metrics

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Translation of Hydrogen Uptake Genes into Rhizobium japonicum Long Minnan, Zhang Fengzhang, Xu Liangshu 1996, 25(01): 13-16.  Abstract ( )   PDF (284KB) ( )   The cosmid pAL618 containing the hydrogen uptake genes of Rhizobium leguminosarum was transferred into Rhizobium Japonicum (Glycine max meer 292-C) by triparent mating system,Two transconjugants 292-C2 and 292-C3 were selected in Rhizobium mininal medium containing Ampicillin (25 mg/L) and Tetraeycline (10 mg/L).The expression of hydrogenase activities of transconjugants were studied.The transconju-gants 292-C2 and 292-C3 showed high hydrogenase activity both in free-living and symbi-otic state whiie the recipient showed no hydrogen uptake activity in free-living state and hydrogen evolution in symbiotic state. Related Articles | Metrics

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Effect of Fungicides and Waxing on Ripe-softening and Postharvest Diseases of “Zihua” Mango Tang Youlin, Zhou Yuchan, Yang Qian 1996, 25(01): 17-21.  Abstract ( )   PDF (298KB) ( )   waxing treatment with SF wax delayed turning yellow and ripe-softening of postharvest "Zihua" mango fruits,increased the lustre of peel,decreased the rate of fruit weight lose and shrinkage of peel,improved the storage quality,and increased the effect of fungicides,TBZ or Prochloraz,on anthracnose and stem end rot.In various treatments with different concentrations of SF wax,1:1 (wax:water) dilution of SF wax was more suitable for waxing of postharvest "Zihua" mango fruit. Related Articles | Metrics

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Biomass, Leaf Area Index and Chlorophy11 Content of Acidosasa edulis Bamboo Shoot-stand Chen Songhe, Zheng Qingfang 1996, 25(01): 22-27.  Abstract ( )   PDF (379KB) ( )   The biomass of Acidosasa edulis bamboo shoot stand was as high as 30375 kg/ha.The above-ground and underground proportion of the biomass ranged from 1.2 to 1.5.The biomass of culms was twice as much as that of branches and leaves.The leaf area index (LAI) of A.edulis bamboo shoot-stand had a parabolic curve with the age of bamboo and was related to its diametcr,height,clear height and crown area.The chlorophyll content in leaves of A.edulis was negatively related to its age and positivelyto solar irradiance. Related Articles | Metrics

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Effect of Streptomycini Sulfas on Asparagus Stem Blight Hu Cuifeng, Jiang Liming, Gao Rixia 1996, 25(01): 28-31.  Abstract ( )   PDF (260KB) ( )   The effect of streptomycini sulfas on asparagus stem blight (Phoma asparagi Sacc.)was studied through spore germinative inhibition test and field control experiment.The results showed that the streptomycini sulfas was effective on inhibiting the germination of spores of the pathogenic fungi,limiting the expansion of the lesions and reducing the number of new lesions of the disease.The control efficiency of thestreptomycini sulfas on the disease was 64%,which was more effective than that of 800-fold mildothane in field.It suggests that streptomycini sulfas might be used as a biological agent for controlling asparagus stem blight. Related Articles | Metrics

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A Preliminary Report on the Histopathologic Observations of Loquat Leaf Parch Blight Disease Lin Youjian, Gao Quanzhun, Hu Cuifeng, Gao Rixia 1996, 25(01): 32-34.  Abstract ( )   PDF (167KB) ( )   The histopathologic observations of the veins infected with loquat leaf parch blight disease were carried out by ultrathin section and electronmicroscope technique.The results revealed that there was a large number of mycelioid organisms of bodies in the phloem cells of the veins infected with the disease,but not in the healthy ones.The mycelioid organisms were 37~100×1500~? nm in sizes,but their naturel was still unknown.It was considered that the disease might be associated with the organisms. Related Articles | Metrics

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Blooming Characteristics of Anoectochilus roxburghii Chen Yu, Lin Kunrui, Guan Qikuan, Chen Jingming 1996, 25(01): 35-37.  Abstract ( )   PDF (178KB) ( )   Observations were made on blooming characteristics of wild and eco-nomic cultivation of Anoectochilus roxburghii during 1990~1992.The results were as follows:the blooming period was in middle September to early November.The blossom was found at midnight.The abundant fIowers occures when temperature was 22~26℃ and relative humidity 86%~95%.Flower opening at high aItitude was earlier than that at low altitude.No fertility occured in late flowering. Related Articles | Metrics

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A Preliminary Study on Flora of Luoboyan Natural Reserve in Sanming, Fujian Chen Guolong 1996, 25(01): 38-42.  Abstract ( )   PDF (312KB) ( )   Luoboyan NaturaI Reserve is located at subtropical zone in ShanxiangLi,Sanming,Fujian.It consists of 127 families,340 genera and 595 seed plant species,including 10 rare and endemic plant species.Meanwhile,the components of this flora are ancqlyzed with the resuIt of different proportions of various genera.In additon,this flora has a close relation with that of Wuyi Mountain. Related Articles | Metrics

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Research Advances in the Reltionship between Polyamine Metabolism and Growth and Development of Horticultural Crops Zheng Yusheng, Zhang Qiuming 1996, 25(01): 43-50.  Abstract ( )   PDF (531KB) ( )   The relationship between polyamine metabolism and growth and devel-opment of horticuItural crops has been reviewed in this article in the following aspects:pathways of polyamine biosynthesis,its regulation on plant growth and development,and its applications on horticultural crops. Related Articles | Metrics

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Brief of Fusarium Research Lin Qinghong, Huang Zhihong 1996, 25(01): 51-56.  Abstract ( )   PDF (407KB) ( )   The classification advance,identification,harm and control measures of Fusarium are summarized in this paper. Related Articles | Metrics

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Alternanthera purpurea——A Potential Carpet Herb Ke Hezuo, Chen Yunying, Chen Liyun, Chang Yontian 1996, 25(01): 57-58.  Abstract ( )   PDF (139KB) ( )   Alternanthera purpurea Y. T. Chang et Lai is a beautiful ornamental car-pet herb native to Fujian and Taiwan. The present paper describes the morphological characters,distribution, ornamental and medicinal uses of this species. Related Articles | Metrics