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10 March 2004, Volume 33 Issue 01 Previous Issue    Next Issue

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Effects of exogenous ABA and GA3 treatments on the changes of pigments in peel of Cara cara (Citrus sinensis) WANG Gui-yuan, XIA Ren-xue, HU Li-ming 2004, 33(01): 1-4.  Abstract ( )   PDF (155KB) ( )   The contents of chlorophyll and carotenoid in peel of Cara cara during fruit development were determined and effects of exogenous ABA and GA3 treatments before colour break on changes of chlorophyll, carotenoid content were also investigated. The results showed that the contents of total chlorophyll and carotenoid in peel of Cara cara reached maximum on Sep.20 and Dec.20 respectively, which was 0.1469mg/g·fw and 0.0321mg/g·fw,respectively. ABA treatment accelerated chlorophyll degradation and inhibited carotenoid accumulation; GA3 treatment delayed chlorophyll degradation and inhibited carotenoid accumulation and biosynthesis seriously. Related Articles | Metrics

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Dynamics of ethylene and calmodulin during pear fruit storage ZHANG Hong-yan, PENG Shu-ang 2004, 33(01): 5-7,11.  Abstract ( )   PDF (210KB) ( )   Calmodulin (CaM) contents in flesh and seeds, ethylene (C2H4) production in peel, flesh and core during pear (Pyrus pyriforlia cv. Huanghua and Xiangnan) fruit storage were analyzed. The main results were as follows:(1) C2H4 production of Huanghua fruit and its different parts were higher than those of Xiangnan, and the time when ethylene peaks occurred in Huanghua were earlier than those of Xiangnan; (2) The sequences when ethylene peak occurred in tissues of two cultivars were the same, and the time when ethylene peak of core occurred was the earliest while that of peal was the latest; (3) The CaM content increased with the increasing of ethylene production, and after the ethylene concentration reached its peak, the CaM content decreased and fruit entered senescence process. Related Articles | Metrics

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Influence of GA3 pretreatment on senescence of petals of coldly stored cut lily SONG Li-li, PENG Yong-hong 2004, 33(01): 8-11.  Abstract ( )   PDF (173KB) ( )   The influence of GA3 pretreatment on the physiological and biochemical changes of petal of cut lily coldly stored for 10 days were investigated. 200mg·L-1 GA3 pretreatment before cold-storage increased the contents of water, soluble carbohydrate and CAT activity and delayed the decrease of protein content, inhibited the rise of POD activity and reduced the accumulation of MDA in cold-stored cut lily petal. In the meantime, the vase life and flower quality were improved. Related Articles | Metrics

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Effects of foliar spray of N and Fe on cold resistance of centipedegrass in late autumn LIU Jin-ping, YOU Ming-hong, MAO Kai, ZHANG Xin-quan 2004, 33(01): 12-15.  Abstract ( )   PDF (166KB) ( )   Various rates of complex fertilizer of urea and EDTA-Fe were applied on centipedegrass leaves in late autumn to evaluate the effects of N and Fe on cold resistance of centipedegrass. The results showed that treatments of Fe or N+Fe increased the contents of matter correlated with cold resistence. 0.6L/m2 Fe fertilizer increased the contents of proline, soluble carbohydrate and catalase by 25%, 310% and 180%, respectively; 0.4g/m2N+0.6L/m2 Fe fertilizer increased the contents of proline, soluble carbohydrate and catalase by 41%, 182% and 160%, respectively and gave the best result for cold resistance of centipedegrass. Foliar spray of N+Fe prolonged the green period of centipedegrass and dropped the medial lethal temperature for 3~4℃. Related Articles | Metrics

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Effects of Na or K on the growth and some physiological indexes of tomato and maize LUO Ying-bo, HUANG Sheng-qin, LIN Ji-yu 2004, 33(01): 16-18.  Abstract ( )   PDF (170KB) ( )   Tomato and maize seedlings were cultured in three kinds of solution (with K nil Na, with Na nil K, nil Na nil K) to evaluate the effects of Na or K on the growth and some physiological indexes of tomato and maize. The results showed that the contents of free proline of tomato and maize were lower and the contents of soluble sugars and the ratio of chla to chlb were higher when cultured in the solution with Na nil K than those cultured in the solution nil Na and nil K included. Na could promote the activity of peroxidase. It is concluded that Na instead of K can promote the growth of tomato and maize to a certain degree. Related Articles | Metrics

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Changes of several physiological determinations in loquat leaves under water stress LUO Hua-jian, LIU Xing-hui 2004, 33(01): 19-21,25.  Abstract ( )   PDF (158KB) ( )   Using the grafted seedlings of two loquat varieties (Changhong No.3 and Jiefangzhong) as experimental materials, the effects of water stress on physiological determinations in loquat leaves were studied. With the increase of water stress, the content of proline in loquat leaves increased and the content of protein decreased. The activities of H+-ATPase in organelles of loquat leaves increased under light or moderate water stress. Under severe water stress, the activities of H+-ATPase in cytoplasm decreased greatly, being lower than those of the control, while the activities of H+-ATPase in mitochondria and chloroplast were still higher than those of the control. Under the same level of water stress, the decrements of protein in loquat leaves of Changhong No.3 was less than that of Jiefangzhong, while the increments of H+-ATPase activities in mitochondria and chloroplast were higher than those in Jiefangzhong. These showed that Changhong No.3 was better than Jiefangzhong in the resistance to drought. Related Articles | Metrics

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Bacteriostatic activities of extracts from 20 medicinal pteridophytes CAI Jian-xiu, WU Wen-jie, GE Qing-xiu 2004, 33(01): 22-25.  Abstract ( )   PDF (160KB) ( )   The water extracts (PWE) and alcohol extracts(PAE) from 20 species of medicinal pteridophytes from Quanzhou were used for study the bacteriostatic activities on Staphylococus aureus, Escherichia coli, Sarcina lutea, Proteus species, Bacillus subtilis and Saccharomyces cerevisiae. The results showed that each extract from 20 medicinal pteridophytes had bacteriostatic activity against at least one tested microorganism. The bacteriostatic activity of PAE were more effective compared to that of PWE, and the average diameters of the inhibition zone of PWE and PAE were 10.12mm and 11.92mm, respectively. The bacteriostatic activity of pteidophyte against B. subtilis was the highest and against S.cerevisiae was the lowest. The differences of bacteriostatic activitgies between the aerial part and the underground part of the ferns varied with different species. Related Articles | Metrics

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Effects of different preservative formulas on cut Gerbera jamesonii flower ZHANG Yu-ping, XIAN Zhao-yan, CHENG Xiao-ying 2004, 33(01): 26-28.  Abstract ( )   PDF (136KB) ( )   The effects of different preservatives on vase life and quality of cut Gerbera jamesonii flower were studied. The results showed that prescription T7 (20g/L Suc+200 mg/L 8-HQC+150mg/L CA+75mg/L KH2PO4·3H2O+1g/L CaCl2) was the best of the 7 various preservatives. It could extend the vase life of cut G. jamesonii flower significantly. Preservative no.7 (T7) decreased decomposition rate of anthocyanidin and retarded the increase of pH value and relative plasmalemma permeability in petals of cut G. jamesonii flower. Related Articles | Metrics

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A rapid and efficient mini-isolation of DNA for PCR analysis ZHANG Zhi-zhong, WU Jing-hua, LU Liu-xin, CHEN Gui-xin 2004, 33(01): 29-30.  Abstract ( )   PDF (58KB) ( )   A modified method for DNA minipreparation suitable for screening transgenic plants is presented in this paper. The method is rapid and efficient. The total DNA extracted by this method can be used for PCR, RAPD, restriction enzyme digestion. Related Articles | Metrics

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Phonological phase and cold resistance of introduced tree species in hill mountains in Southern Fujian YE Gong-fu, ZHU Shi-wei, LUO You-ning, LIN Jie, SHEN De-yan 2004, 33(01): 31-36,41.  Abstract ( )   PDF (257KB) ( )   For the sake of conserving and utilizing the tropical and subtropical timber tree species, some tree species were introduced to Xiangxi State-owned Forestry Farm in Xiamen. The phonological phases of 35 main tree species were observed. The results showed that the leaf buds and tender leaves grew in March, flowers developed from Feb. to Jun., and seeds matured from Jul. to Oct.. Base on the chilling injury investigation of 117 tree species, 83 species survived during winter without or just slightly cold injury; 16 species were damaged at some degree during winter, such as Duabanga grandiflora and Tutcheria speetabilis; and 18 species were damaged severely during winter, such as Tectona grandis and Albizzia procera. Most tree species grew normally during summer, and 90 species could flower and bear fruit. Among them, 109 species were not damaged by diseases and insects, and 8 species were attacked severely, such as Fortunella hindsii and Amesiodendron chinense. There were 110 species whose survival rates were higher than 80%. All these indicate that the tree species has diversity on ecological adaptability, and there are great differences in growth and adaptability among different tree species. Related Articles | Metrics

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Floristic analysis of the seed plants in Niumulin Nature Reserve in Yongchun County,Fujian Province GUO Zhi-jian, ZOU Xiu-hong, LIU Si-tu, WU Li-qing 2004, 33(01): 37-41.  Abstract ( )   PDF (188KB) ( )   Floristic analysis of seed plants in Niumulin in Yongchun County, Fujian Province was made in this paper. There are 950 species belonging to 462 genera of 119 families of the seed plants in the region. The floristic analysis of geographic elements indicated that the flora of Niumulin Nature Reserve is derived typically from tropics (64.7% of the total), and dominated by pan-tropic elements (25.0%). Meanwhile, a large number of temperate elements (22.4%) are established in this region. Related Articles | Metrics

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Plant disposition and characteristics of vegetation landscape of parks in Guangzhou City,Guangdong Province WENG Shu-fei, CHEN Xi-mu 2004, 33(01): 42-45.  Abstract ( )   PDF (345KB) ( )   Based on a survey and the photographs taken from the vegetation landscape in Guangzhou parks, the correlation of plant disposition and vegetation landscape was studied by means of the SBE(Scenic Beauty Estimation Procedures) and LCJ (The Law of Comparative Judgment) of Psychological paradigm. Data were assessed with the SAS (Statistical Analysis System) system. The best plant disposition model was acquired, which embodied the characteristics of landscape architecture of Lingnan style and the south subtropical features. And the scientific basis for plant lanscaping was also provided. Related Articles | Metrics

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Yield effect of spring peanut covered with double degradation film LAN Hai-bin 2004, 33(01): 46-48.  Abstract ( )   PDF (121KB) ( )   Based on field experiment, the effects of double degradation film on spring peanut were studied. The results showed that double degradation film preserved the soil temperature and moisture and promoted the growth of plants. Thus covering double degradation film increased the production of spring peanut. Related Articles | Metrics

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Introdution and cultivation techniques of Iris hollandica LIN Bing, HUANG Min-ling, CHEN Shi-lin, WU Jian-she, YE Yi-yuan 2004, 33(01): 49-50.  Abstract ( )   PDF (98KB) ( )   Related Articles | Metrics

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Tissue culture and plant regeneration of Petunia hybrida QUAN Hong, QI Ying, SHI He-ping 2004, 33(01): 51-52.  Abstract ( )   PDF (188KB) ( )   The light green compact callus was developed from leaf explant of Petunia hybrida var. grandiflora when cultured on MS medium supplemented with 6-BA 1.0mg/L+NAA 0.1 mg/L for 3 weeks. When calli were transferred into the differentiation medium, MS+6-BA 0.5 mg/L+4-PU 0.5 mg/L+NAA 0.1mg/L for 1 week, adventitious buds were formed. Transferred the buds with 3cm high into the root induction medium (1/2MS+NAA0.1mg/L+GA3 0.5mg/L) for 10d, roots were induced. Related Articles | Metrics

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Tissue culture and propagation of Spathiphyllum floribundum ‘Supreme’ ZHU Gen-fa 2004, 33(01): 53-55.  Abstract ( )   PDF (96KB) ( )   Tissue culture and rapid propagation of Spathiphyllum floribundum 'Supreme' were studied with explants such as shoot tips, leaves, leafstalks and young inflorescence. The suitable media were obtained for rapid propagation of shoot tips, callus induction and plant regeneration of leaves and leafstalks, embryoid induction of inflorescence and plant rooting. MS medium with 255 mg/L KH2PO4 was suitable for shoot propagation and 1/2MS+0.50mg/L NAA was optimal for rooting. Related Articles | Metrics

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Tissue culture and plantlet regeneration from leaves of Euphorbia pulcherrima SHI He-ping, QI Ying 2004, 33(01): 56-56.  Abstract ( )   PDF (58KB) ( )   Related Articles | Metrics

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Differentiation of some confusable varieties of Chinese herbal medicine (Ⅲ) LIU Qing-kai 2004, 33(01): 57-59,63.  Abstract ( )   PDF (151KB) ( )   Based on some literatures and work experiences, 22 confusable varieties of Chinese herbal medicine which were divided into 8 groups were continued 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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A review of application and research progress in ricin ZENG You-wei, SONG Guang-quan, PENG Yong-hong, LIANG Guan-sheng 2004, 33(01): 60-63.  Abstract ( )   PDF (138KB) ( )   Ricin is a ribosome-inactivating protein that can be easily isolated from castor bean seeds (Ricinus communis). It consists of a 32KD A chain (RTA) linked by a disulfide band to a 34KD B chain (RTB). The structure and physical properties of ricin, toxic mechanism, extraction method, and the application of this protein toxin are reviewed in this paper. Related Articles | Metrics

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A review of chemical constituents,medicinal function of Opuntia and their development and utilization TAO Mei-hua, ZENG Fu-hua, LU Xiang-yang 2004, 33(01): 64-68.  Abstract ( )   PDF (165KB) ( )   The advances in Opuntia are introduced in this paper, the biological characteristics, distribution, chemical constituents and use are involved. It provides some references for further research of hygienic food and medicine. Related Articles | Metrics

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A review of progress in cytomorphology,physiology and biochemistry of male sterility in tobacco LIU Qi-yuan, LIU Fei-hu, HE Kuan-xin, HU Ri-hua 2004, 33(01): 69-72.  Abstract ( )   PDF (124KB) ( )   The research progress in cell morphology, physiology and biochemistry of tobacco male sterility are reviewed, including the differentiation, development and morphological characteristics of flower, the characteristics of anther tapetum, the difference of mitochondrial protein, and the activities of several enzymes in tobacco male sterile line and its counterpart maintainer. Related Articles | Metrics

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A review of senescence and preservation of fresh cut flowers CHEN Dan-sheng, WANG Jing-ming, DING You-xiong 2004, 33(01): 73-76.  Abstract ( )   PDF (127KB) ( )   During senescence of cut flowers, the water metabolism, nutrients metabolism, changes of plant hormones and cell membrane are reviewed. The advances of cut flowers preservation techniques are also summarized. Related Articles | Metrics