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    10 September 2004, Volume 33 Issue 03 Previous Issue    Next Issue

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    Studies on the Morphology of Male and Female Pollen of Wild Vitis quinquangularis in Guangxi Province
    LI Hong-li, PENG Hong-xiang, ZHU Jian-hua, HUANG Hong-ming, HUANG Feng-zhu, LU Gui-feng
    2004, 33(03): 1-3. 
    Abstract ( )   PDF (96KB) ( )  
    The morphology of male and female pollen of wild Vitis quinquangularis in Guangxi Province were studied by using scanning electron microscope. The results indicated that the pollen grains of male and female on wild Vitis quinquangularis are minutiae. The pollen grains characteristics differ in exine ornamentation, especially in type of aperture and shape,so all normal male pollen grains are tricolporate and prolate-type (P/E=1.20),and that of all female pollen grains are acolporate (having no furrows) and subprolate-type (P/E=1.12).
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    Ultrastructural Observation on Integument Cells of Doritis pulcherrima
    WU Cheng-hou, LI Dong-mei, LIANG Cheng-ye, YE Xiu-lin
    2004, 33(03): 4-6. 
    Abstract ( )   PDF (4410KB) ( )  
    The ultrastructure of integument cells of Doritis pulcherrima ovules was studied. The outer integument cells of Doritis pulcherrima are keeping well after 38 days of pollination. But the inner integument cells begin degeneration that the chromatin of nucleus condense, the cristae of mitochondria reduce or even lost, the amount of ribosome on endoplasmic reticulum decrease, and the number of vacuoles in which obtained membrane and something like degenerated organelle structures increase, but the karyotheca keep integrated. The degeneration of the inner integument cells is similar to the programmed cell death.
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    Anatomical Study on the Development of Floral Nectary in Litchi chinensis
    XIAO Mu-zhu
    2004, 33(03): 7-11. 
    Abstract ( )   PDF (1028KB) ( )  
    The floral nectary in Litchi chinensis is a disc nectary located between calyx and ovary on receptacle. The nectary is composed of epidermis nectariferous tissue and vascular bundles. The nectary originates from the outer 2~3 layers cells of receptacle. The nectariferous tissue contains starch grains. It belongs to starch nectary, but the epidermal cell contains no starch grains. The nectariferous tissue is differentiated as PAS reaction, the dense cells distribute by a net and make up the nectar passage. The pale cells distribute in the mesh. The surface of nectary is covered by a cuticle with ripply sculpture and there are spores in it. The trichomes mainly play a protective role. Most nectar exudes out through the pores in cuticle.
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    Biochemical Characteristics of Hybrid Rice Jinyou 63 at Seedling Stage
    HU Yi-hong, JIANG Xiao-cheng, YAO Zhi-ming, ZHANG Liu-hui, KUANG Fei-long
    2004, 33(03): 12-15. 
    Abstract ( )   PDF (155KB) ( )  
    SOD isoenzymes and SOD, POD activities in roots, stems and leaves of hybrid rice Jinyou63 seedlings were studied. The results showed that there were organ specificity of SOD activities among roots, stems and leaves in Jinyou 63 from the 7th day to the 13th day after seeds sowing and the sequence of SOD activities of organs was leave >stem >root; the SOD isoenzyme bands and activities of the same organs varied at different stages, and the SOD activities were related to Mn-SOD to an extent; there were also organ specificity of POD activities among roots, stems and leaves, and POD activities of stems were significantly higher than those of roots and leaves, and the trend of POD activities had relations with those of SOD.
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    Diurnal Change of Photosynthesis of Tobacco at High Altitude Localities
    QIN Peng, LIU Ye-ju, ZENG Shu-hua, LIU Fei-hu
    2004, 33(03): 16-18,21. 
    Abstract ( )   PDF (190KB) ( )  
    All the five tested tobacco cultivars and lines exhibited a similar "double peak" diurnal curve of photosynthetic rate. This would be caused by a coaction of high atmospheric humidity, feasible air temperature and high light intensity. The change of air temperature and CO2 concentration did not alter the diurnal curve of photosynthetic rate in some extent.
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    Preparation of Roselle Red Pigment by Membrane Processes
    HU Jian-nong, ZHENG Xiao-ying
    2004, 33(03): 19-21. 
    Abstract ( )   PDF (123KB) ( )  
    A new method for the preparation of Roselle (Hibiscus sabdariffa) red pigment by membrane processes was developed, including the selection of proper operating conditions for the MF membrane process and the NF membrane process. The results showed that membrane separation technique is a new potential technique for the preparation of natural pigment.
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    Effects of Potassium on Green Degree and Quality of Centipedegrass
    YOU Ming-hong, LIU Jin-ping, MAO Kai, BAI Shi-qie
    2004, 33(03): 22-25,28. 
    Abstract ( )   PDF (169KB) ( )  
    Potassium application has a positive effect on changing the color, prolonging the green period and improving the quality on turf. In proper time, applying potassium to centipedegrass (Eremochloa ophiuroides) with proper amount could increase chlorophyll content. Potassium benefited to prolong the green period, especially when applying with 4.5g/m2 K2O. It also increased density, strengthened hardiness, resulting in improving the quality of turf at different periods. Equal amount of potassium applied with different frequencies gave the best results than single dose application. Each amount of application could not greater than 2.0g/m2 K2O, and annual amount not greater than 6.0g/m2 K2O. Potassium was required at different growing periods, but the better results were given under high and low temperature conditions.
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    Effect of Different Substrates on Some Physiological Determinations and Fruit Quality of Cucumber
    LUO Shi, ZHENG Zhi-bo, MO Wei-qin, JIANG Nan
    2004, 33(03): 26-28. 
    Abstract ( )   PDF (130KB) ( )  
    Planting cucumber on three different substrates, i.e., rockwool, gravel and wood, some physiological determinations were examined. The results varied on different substrates and at different growing stages. Planting with rockwool gave the best result, and obtained the high yield and best quality. Rockwood, therefore, was a good substrate for soilless culture.
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    A Probation of SOD Preparation in Ponkan Production
    ZHONG Lian-sheng, YE Shui-xing, YE Jian-ming
    2004, 33(03): 29-30. 
    Abstract ( )   PDF (99KB) ( )  
    A probation of SOD preparation was made in Ponkan production. The result showed that spraying "Yiwei"SOD preparation to the adult bearing tree of Ponkan gave excellent effects on SOD activity in fruit and fruit quality. It is recommended that the optimal concentration of SOD preparation was 0.16g/L, continued 3~4 times at 30-day intervals.
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    A Preliminary Study on Antibaeterial Activity of Porphyridium cruentum and its Polysaccharide
    YE Jin-lin, WANG Ming-zi
    2004, 33(03): 31-33. 
    Abstract ( )   PDF (97KB) ( )  
    Using the tube disc method, the research results of the Porphyridium cruentum extracts and the antibacterial and antifungal properties of its polysaccharide are presented in this paper. The results indicated that all the tested samples had antibacterial power, and the water extraction and the extracellar secretion had more antibacterial powerful. Through the comparison analysis, polysaccharide is the essential component for antibacteriae. There was a relatively significant bacteriostatic activity for gram-positive bacteria, especially for Staphylococcus aureus and Sarcina sp.. It, therefore, has the potential value for development.
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    The Effects of Different Flower Organs of Heptacodium miconioides on the Callus Inducement
    CAI Jie-jie, XU Dong-qing, ZHANG Yue-qin
    2004, 33(03): 34-36. 
    Abstract ( )   PDF (127KB) ( )  
    Different flower organs (including calyx, petal, filament, style, anther and flower bud) of Heptacodium miconioides were cultured on MS+6-BA 1.0mg/L+2,4-D 0.6mg/L medium for callus inducement. The result showed that there was a higher inducement percentage when taking flower bud, calyx and petal as explants, and the callus grew quickly.
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    Micropropagation of Amomum villosum
    LIU Jin-ping
    2004, 33(03): 37-38,33. 
    Abstract ( )   PDF (151KB) ( )  
    Taking the buds as explants, Multiple-shoot multiplication of Amomum villosum were studied. The results showed that the best initiation multiplication medium was MS+5mg/L BA+5ml/L 20% Na2S2O3, and the differentiation percentage and multiplication rate were 62.5% and 5.36, respectively. Shoots were rooted on 1/2 MS+1mg/L IBA+0.5mg/L IAA, rooting rate was 94.6%.
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    Effects of TDZ and CPPU on Rapid Propagation of Anthurium andraeanum
    HUANG Qun-sheng
    2004, 33(03): 39-41,44. 
    Abstract ( )   PDF (152KB) ( )  
    Taking leaves and leafstalks as explants, the effects of TDZ and CPPU on rapid propagation of Anthurium andraeanum were studied. The results showed that the activities of TDZ and CPPU were greater than that of 6-BA; a combination of TDZ 1.0mg/L+6-BA 0.5mg/L was optimal for explant dedifferentiation of Anthurium andraeanum, resulting in increasing callus induction rate by 50.0%~166.0%. Callus could be differentiated on MS+TDZ 0.3mg/L+NAA 0.1~0.4mg/L or MS+CPPU 0.3mg/L+NAA 0.1~0.4mg/L and could produce into plantlets.
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    Influential Factors on Multiplication and Differentiation of Phalaenopsis Protocorm-like Body (PLB)
    YAO Li-juan, XU Xiao-wei, LIN Shao-sheng, YOU Ju-bin, CHEN Zhong-lin
    2004, 33(03): 42-44. 
    Abstract ( )   PDF (146KB) ( )  
    Rapid multiplication of PLB and inducement into young plant is the key to realized commercial production of Phalaenopsis. The first generation of PLB grew well after 2.5 to 3 months cultivation, which were formed from 3 month-old embryo. The young plant grew vigorously after differentiation. The multiplication percentage of PLB was up to 332% after 30 days cultivation on 1/2 MS medium. MS medium was advantageous to differentiation. The descending of multiplication percentage of PLB was 6-BA, KT, Ad+KT, Ad, which supplemented with different cytokinins. NAA 0~1.0mg/L gave little effect on multiplication and differentiation of PLB.
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    An Investigation on Cultivation and Growth of Cycas revoluta
    ZHANG Xiu-ying
    2004, 33(03): 45-47. 
    Abstract ( )   PDF (98KB) ( )  
    Cycas revoluta has been introduced and Cycas garden developed since 1962. An investigation was made on its cultivation, biological characteristics and growth in 2001. The results showed that Cycas revoluta grew well; the blooming time was from May to June and the seed maturation was from October to November; the plant grew slowly so that its annual growth was only 3.026cm in height and its diameter was 0.726cm.
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    A Primary Study on Introduction and Cultivated of Salak in Xishuangbanna
    HU Jian-xiang, ZHENG Ling-li
    2004, 33(03): 48-50. 
    Abstract ( )   PDF (168KB) ( )  
    Salak is one of the tropical commercial plants of palmae, the fruit is edible when fresh, it is widely grown in some southeast Asia countries. It has been introduced and cultivated in Xishuangbanna Tropical Botanic Garden. The growth, florescence, fruit bearing and propagation of Salak were studied and is also discussed in this paper.
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    Evaluation on the Ornamental Characteristics and Utilization of the National Key Protected Species in Guangdong Province
    JIANG Qian-cai, LI Qing, LI Dong-wen, CHEN Jia-jie, TAN Zong-jian
    2004, 33(03): 51-54. 
    Abstract ( )   PDF (153KB) ( )  
    There are 65 national key protected species in Guangdong Province. Based on the evaluation of ornamental characteristics of the resources, some suggestions for their rational development and utilization are put forward.
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    The Water Plant Resources in Xiamen Area and their Horticulture Uses
    LIN Pei-xun
    2004, 33(03): 55-58. 
    Abstract ( )   PDF (410KB) ( )  
    The water plant resources in xiamen area are described. The horticulture uses of the water plant are also discussed.
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    Tissue Culture and Rapid Propagation of Lilium cordelia
    WANG Feng-lan, ZHOU Hou-gao, HUANG Zi-feng, ZHANG Shi-jun
    2004, 33(03): 59-59. 
    Abstract ( )   PDF (58KB) ( )  
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    Tissue Culture and Rapid Propagation of Lycium chinense
    WANG Ya-ying, YANG Zhong-geng, CHEN Han-xin, XU Yu-qin
    2004, 33(03): 60-60. 
    Abstract ( )   PDF (89KB) ( )  
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    In Vitro Germination and Plantlet Regeneration from Seed of Grammatophyllum
    WEI Cui-hua, CHEN Qin, HUANG Qi
    2004, 33(03): 61-61. 
    Abstract ( )   PDF (88KB) ( )  
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    A New Method of Immersing Litchi Fruit Specimen
    YIN Jin-hua, LI Zao-wen, LUO Shi, WU Mei-liang, HU Rui-qing
    2004, 33(03): 62-63. 
    Abstract ( )   PDF (86KB) ( )  
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    A Review of the Advances on Signal Transduction in Plants and Male-sterile Mechanism of Rice
    XIA Kuai-fei, LIANG Cheng-ye
    2004, 33(03): 64-68. 
    Abstract ( )   PDF (162KB) ( )  
    The advances in studies of the relationship between Ca2+、GAs、IAA and genic male sterility of rice are reviewed in this paper.
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    A Review of Effects of 1-Methylcyclopropene Treatment on Postharvest Physiology of Banana
    LI Min, HU Mei-jiao, YANG Feng-zhen
    2004, 33(03): 69-72. 
    Abstract ( )   PDF (133KB) ( )  
    The effects of 1-methylcyclopropene on postharvest physiology of banana are reviewed. Several influential factors on the effect and some problems of 1-methylcyclopropene are also discussed.
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    A Review of Physiological and Biochemical Changes and Regulation during Flower Senescence
    ZENG Qiu-lian, XU Jie, YIN Han-ping, DONG Yu-liang
    2004, 33(03): 73-76. 
    Abstract ( )   PDF (140KB) ( )  
    Changes in physiology and biochemistry during the flower senescence, and the regulation of several factors to the flower senescence are summarized in this paper.
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