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10 November 2005, Volume 34 Issue 04 Previous Issue    Next Issue

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Induction and Conservation of Callus from Loquat Leaves YANG Feng-Ling, LIN Shun-Quan 2005, 34(04): 1-5.  Abstract ( )   PDF (1495KB) ( )   Loquat leaves of medium maturity was optimum for callus induction. MS+6-BA 1.0mg/L+2,4-D 0.5mg/L induced the callus with optimal quality and MS+6-BA 0.5~1.0mg/L+2,4-D 0.1~0.2mg/L gave the best result for subculture of loquat. Related Articles | Metrics

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Anatomy Structure of Leaf of Cultivars in Cynodon dactylon×Cynodon transvaalensis and Their Rub-resistant Character XIAO Mu-zhu, LIU Jian-xiu 2005, 34(04): 6-9.  Abstract ( )   PDF (547KB) ( )   Microstructure of the leaves of 7 turfgrass cultivars in Cynodon dactylon×C. transvaalensis was studied. They all have the typical structure of leaf of C4 plant, but out of the ordinary is that the structure of the midrib is alike the parallel veins and there is a layer of fiber cells between the phloem and the bundle-sheath of vein in the midrib and big parallel veins while the outer wall of the bulliform cells is less cuticularized. Comprehensive comparing the thickness of cuticle, the quantity of sclerenchyma and the density of vein-bundles of the leaves of 7 cultivars, a comprehensive index of rub-resistant character of leaf was gained as one of tramp-resistant character indexes. The cultivar with the hightest index was C. dactylon×C. transvaalensis cv. ‘TifSport’. Related Articles | Metrics

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Changes of Soluble Protein and Reducing Sugar Content in Papaya Plants Infected by PRSV ZENG Yong-san, YANG Shou-jian, MAI Yan-ling, CHUI Xi-ying 2005, 34(04): 10-13,16.  Abstract ( )   PDF (277KB) ( )   An experiment was conducted to analyze the dynamic process of soluble protein and reducing sugar contents in papaya plants infected by Papaya Ring Spot Virus (PRSV), and their relationships to disease resistance. The results showed that peak value of the percentage of changes in soluble protein content in susceptible variety(‘Ling nan zhong’) appeared earlier and greater than that in resistant one (‘Shui zhong hong-48’) after inoculated with PRSV; as to the former, when the peak appeared at 24h after inoculation, its value was 54.6%, while the later, when the peak appeared at 48h, its value was 38.2%. The soluble protein bands appearing in uninoculated susceptible variety were one more than those in resistant one. But at early stage of infection by PRSV (at 24h after inoculation), the bands in resistant variety were one more than those in susceptible one, its Rf value was 0.602. The peak of percentage of changes in the reducing sugar content in resistant variety was at 48h after inoculation and the value was 12.3%. But the percentages of change in the reducing sugar content in susceptible variety were all negative after inoculation. Related Articles | Metrics

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Study on the Inhibition of Polyphenoloxidase and Peroxidase Activities in Chinese White Olive Fruit ZHAN Jia-hong 2005, 34(04): 14-16.  Abstract ( )   PDF (156KB) ( )   Under different temperatures, the effects of several inhibitors on the activities of polyphenoloxidase (PPO) and peroxidase (POD) in Chinese white olive fruit were studied. The results indicated that PPO activity was highest at 27℃ and POD was at 45℃. The inhibition of PPO activity was more significant than that of POD during low temperature. Ascorbic acid and sodium sulfite could significantly inhibit the activity of PPO. Meanwhile, ascorbic acid and magnesium chloride had significant inhibition on the activity of POD. Related Articles | Metrics

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Effects of Fulivc Acid on the Growth and Uptaking Heavy Metals of Nephrolepis cordifolia LIN Jie, ZHENG Zhong-fang, KE Jin-lian 2005, 34(04): 17-19,24.  Abstract ( )   PDF (189KB) ( )   Treated with fulivc acid, the growth of Nephrolepis cordifolia which applied sewage sludge as fertilizer was studied. The results showed that the dry weight of plant, the length, width and pairs of leaves increased significantly with the increasing of irrigation times of fulivc acid. Meanwhile, the content of heavy metals in Nephrolepis cordifolia increased significantly. The irrigation method was proposed as an enhanced-phytoremediation technology applied in polluted sewage sludge with heavy metals. Related Articles | Metrics

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Seed Dormancy Mechanism and Ways to Accelerate Germination of Syagrus romanzoffiana and Arenga engleri LIANG Yu-qin, YANG Sheng-chang 2005, 34(04): 20-24.  Abstract ( )   PDF (274KB) ( )   Using the seeds of Syagrus romanzoffiana and Arenga engleri as experiment materials, the dormancy mechanism of seed and the technique for germination hastening were studied. The results showed that there were germination inhibitors in pulp and endosperm, the germination percentage and germinating power of seeds were related to the maturity of seeds. Seed soaking with GA3 100mg/L or NAA 100mg/L could increase the percentage of germination. Related Articles | Metrics

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Influence of Two Kinds of Hybrid Rootstocks on the Growth and Some Physiological and Biochemical characters of Young Trees for Navel Orange ZHOU Kai-bing, GUO Wen-wu, XIA Ren-xue, HUANG Ren-hua, HU Li-ming, YANG Rong-gen 2005, 34(04): 25-27,35.  Abstract ( )   PDF (198KB) ( )   Using Citrus reticulata+Poncirus trifoliata, C. reticulata+C. jambhiri, C. grandis×P. trifoliata, C. sinensis×P. trifoliata (CK) as rootstocks, the growth and some physiological and biochemical characters of navel orange young trees were studied through two years potted experiment. The results were as follows. The growth of navel orange with rootstocks of somatic hybrid and C. tranolis×P. trifoliata were greater than that of CK. The contents of soluble sugar in leaves of C. reticulata+C. jambhiri and CK were higher than those of the others. The content of chlorophyll in leaves with rootstock of C. reticulata+C. jambhiri was significantly higher than those of the other treatments. The activities of POD in leaves were negatively correlated with the current crown volume within two years. Related Articles | Metrics

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Study on the Fractal Relation of Growth Pattern of Eremochloa ophiuroides under Different Light Conditions LI Jun, MAO Kai 2005, 34(04): 28-31.  Abstract ( )   PDF (184KB) ( )   By using the principles and methods of fractal geometry theory, the growth pattern of Eremochloa ophiuroides was studied under different light conditions. The results showed that Eremochloa ophiuroides had a self-similarity growth process. It had different fractal dimensions and disciplinarian of biomass accumulation under different light conditions. The velocity of biomass accumulation increased with the increasing of fractal dimension value. And the ability of divarication and inhabiting space of Eremochloa ophiuroides was showed by fractal dimension. The clonal population of Eremochloa ophiuroides could adjust growth pattern according to the environment. This is a kind of adaptable ecological policy. Related Articles | Metrics

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Relationship between Embryo Growth and Seeds Sprouting of Bletilla Striata Zhang Jian-xia, Fu Zhi-hui, Li Hong-lin, Yang Bo 2005, 34(04): 32-35.  Abstract ( )   PDF (709KB) ( )   With the increasing age of Bletilla Striata embryo, the maturity of embryo was enhanced, and the rate of albuminous seed and the sprouting rate of seed increased, while the sprouting time began to shorten. It was the best time to pick the capsules when the embryo had attained the age of 20wk, thus, giving the highest albuminous seed rate and 100% sprouting rate of seed, and it merely took one week to sprout. After germination, the embryos first developed into PLBs, then multiplicated and differentiated into leaves and roots, and formed complete plantlet. The medium added with Huabao No.1 1g/L+Huabao No.2 2g/L+10% coconut milk gave the best result for seeds sprouting and seedlings growth. The medium was more simple and convenient than the general medium supplemented with growth regulator. Related Articles | Metrics

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Toxicity of Extract from Exopleura of Ginkgo biloba against Pieris rapae LIN Qing-hong, ZENG Xin-ping, LIU Fu-ping, ZHANG Ning, HUANG Wei-nan 2005, 34(04): 36-37,40.  Abstract ( )   PDF (159KB) ( )   Toxicity of extract from exopleura of Ginkgo biloba against Pieris rapae was evaluated in the study. The results showed that the mortality of extract at the concentration of 0.75g/ml against 3-instar larvae of P. rapae was 76.6% and extract of 0.15g/ml was 53.3%. Fed on the cabbage leaves treated with extracts (0.75g/ml, 0.15g/ml), the death rate of 3-instar larvae was 63.3% and 43.3%, respectively. The toxicity of extract (0.75g/ml) against 5-instar larvae of P. rapae was lower (33.3%) than that against 3-instar larvae. After 5d, the corrected mortality of extract at the concentration of 0.75g/ml was 63.6% in the field trial. Related Articles | Metrics

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Relationships between Colors and Some Physiological and Biochemical Indexes of Leaves from Nandina domestica WEN Guo-qin, HE Dao-wen, HE Zhen 2005, 34(04): 38-40.  Abstract ( )   PDF (152KB) ( )   Some physiological and biochemical indexes (i.e. contents of chlorophyll, anthocyanin and soluble sugar, density of stoma, activities of POD and CAT) of leaves in different colors from Nandina domestica were measured. The results showed that the contents of anthocyanin and soluble sugar in red leaf were higher than those in green leaf while green leaf had a higher content of chlorophyll. The red leaf had less and smaller stoma than the green leaf. The activities of POD and CAT of green leaf were higher than those of red leaf. Related Articles | Metrics

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Some Newly Recorded Seed Plants from Hainan Island SHAN Jia-lin, ZHENG Xue-qin 2005, 34(04): 41-42.  Abstract ( )   PDF (122KB) ( )   Three genera, six species of seed plants are newly recorded from Hainan Island, of which 3 species have been fine naturalized and widespread in Hainan Island, and usually become harmful exotic weeds in orchard farmland, rubber tree forest and fallow. Related Articles | Metrics

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Medicinal Plant Resources of Guanshan Nature Reserve in Jiangxi Province YAO Zhen-sheng, XU Xiang-rong, CHEN Jing, GE Fei 2005, 34(04): 43-47,51.  Abstract ( )   PDF (266KB) ( )   A survey of medicinal plant resources revealed that there exists 1 378 species of medicinal plants, including 210 species of common traditional medicinal plants, in Guanshan Nature Reserve, Jiangxi Province. There are 4 species of medicinal algae, 26 species of medicinal fungi, 36 species of medicinal mosses, 5 species of lichens, 93 species of medicinal pteridophytes, 642 species of medicinal spermatophytes, 94 species of rare and endangered plants, 124 species of medicinal ornamentals, 127 species of medicinal animals and agricultural pharmaceutics in this district. Moreover, 9 species of new distribution in Jiangxi were found. The development and utilization of medicinal plant resources in the reserve were also introduced. Related Articles | Metrics

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Pteridophytic Resources and its Comprehensive Utilization in Chebaling National Nature Reserve,Guangdong Province BAI Yin, BAO Ying-hua, XIAO Rong-gao, RAO Ji-teng, FENG Cheng-hao 2005, 34(04): 48-51.  Abstract ( )   PDF (186KB) ( )   The pteridophytic resources are rich in Chebaling National Nature Reserve, Guangdong Province. There exists 195 species of pteridophytes in this area, which belong to 80 genera of 38 families. The pteridophytic resources in this area are classified as medicinal ferns, edible ferns, industrial ferns, indicator ferns, and rare and endemic ferns according to its economic values, application and growing situations. Some suggestions for comprehensive exploitation and utilization are put forward in this paper. Related Articles | Metrics

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Direct Seeding Technique of Turf and Its Conservation ZENG Yu-xin 2005, 34(04): 52-54,59.  Abstract ( )   PDF (183KB) ( )   Related Articles | Metrics

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Relationship Between City Green Land and Urban Heat Island Effect WANG Yan-xia, DONG Jian-wen, Wang Yan-zhen, Wu Nan-sheng 2005, 34(04): 55-59.  Abstract ( )   PDF (209KB) ( )   With the development of urbanization, UHI (urban heat island) effect has attracted more and more attentions. UHI's changes and the effects of city green land on UHI intensity were studied in this paper. The diminished methods and measures of UHI intensity were also discussed. Related Articles | Metrics

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Development and Utilization of Endangered Plant Cercidiphyllum japonicum MAI Miao-miao, SHI Da-xing, WANG Mi-li 2005, 34(04): 60-62.  Abstract ( )   PDF (153KB) ( )   The geographical distribution and the cultivation technique of Cercidiphyllum japonicum are reviewed in this paper. The value of Cercidiphyllum japonicum in the field of medicine, industry and landscaping are also discussed. Related Articles | Metrics

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Tissue Culture and Plant Regeneration of Limonium sinuatum LEI Kai-rong, LIN Qing, WU Hong, HAO Feng 2005, 34(04): 63-63.  Abstract ( )   PDF (127KB) ( )   Related Articles | Metrics

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Tissue Culture and Plantlet Regeneration of Kalimeris indica(Aster indi-cus) WEN Guo-qin, HE Dao-wen 2005, 34(04): 64-64.  Abstract ( )   PDF (91KB) ( )   Related Articles | Metrics

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Tissue Culture of ‘Donghuzao’ Loquat YAN Zheng 2005, 34(04): 65-65.  Abstract ( )   PDF (90KB) ( )   Related Articles | Metrics

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A Review of Interaction in Plant Hormone Signaling HUANG Chao, LI Ling 2005, 34(04): 66-70.  Abstract ( )   PDF (359KB) ( )   The advances in interaction in hormone signaling, including the identification of special genes involved in hormone signal transduction, interaction of hormone signaling, interaction of plant hormone and sugar, and effects of hormone on germination and development of seed, are reviewed in this paper Related Articles | Metrics

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A Review of Molecular Marker Application in the Study of Germplasm Resources of Ornamental Plants LI Dong-mei, ZHU Gen-fa, YE Qing-sheng 2005, 34(04): 71-75.  Abstract ( )   PDF (219KB) ( )   The main type and characteristic of molecular markers are introduced. The application of molecular markers in the fields of ornamental plants such as genetic diversity, classification, origin, evolution, cultivar identification, determination of hybrid purity, construction of molecular genetic map, location and cloning of character genes and ornamental breeding are reviewed in this paper. Related Articles | Metrics

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A Review of Progress in Tissue Culture of Plum ZOU Ying-ning, LI Guo-huai 2005, 34(04): 76-80.  Abstract ( )   PDF (317KB) ( )   The advances in tissue culture of plum (Prunus) in the world, including culture of shoot tip, stem segment with bud, embryo, protoplast and leaf, are reviewed. The influencing factors, especially different carbon sources and adding matters are evaluated in this paper. Some suggestions for further studies are also put forward. Related Articles | Metrics