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30 March 2019, Volume 48 Issue 01 Previous Issue    Next Issue
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Plant physiology
Plant ecology, resources and taxonomy
Plant tissue culture and plant protection
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Plant physiology

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Quinclorac Influence on the Growth, Development and IAA Content of Barnyardgrass (Echinochloa crusgalli) ZENG Wen-jie, XIAO Zi-yong, JIN Chen-zhong, BAI Lian-yang, PENG Qiong 2019, 48(01): 1-6.  DOI: 10.3969/j.issn.1009-7791.2019.01.001 Abstract ( )   PDF (11633KB) ( )   The effects of quinclorac on growth characteristics, protein concentration, peroxidase activity, superoxide dismutase activity and auxin content in Echinochloa crusgalli were studied by applying quinclorac and auxin. The results showed that the treatment of 800 g·hm-2 quinclorac for 24 h did not significantly inhibit the growth of S-type barnyardgrass. However, the average fresh weight of R-barnyardgrass was significantly increased by quinclorac treatment alone and the treatment of quinclorac with IAA. Under the conditions of no medicine application, quinclorac treatment alone and the treatment of quinclorac with IAA, the protein concentration of R-type barnyardgrass increased by 23.5%, 29.8% and 64.0% than that of S-type barnyardgrass respectively. R-type barnyardgrass showed higher tolerance. After treated with quinclorac, the SOD activity of two biotypes of barnyardgrass increased and the POD activity decreased. Exogenous IAA can enhance the POD activity of S-type barnyardgrass; while there was no significant effect on SOD, POD activity of R-type barnyardgrass. The increase of auxin content promoted the growth of R-type barnyardgrass. References | Related Articles | Metrics

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Effects of 60Co-γ Irradiation on Seed Germination and Seedling Growth of Camellia drupifera ZHA Qian-hui, HUANG Yong-fang, HUANG Li-ying, ZHANG De-yi, WANG Guo-xing, WANG Guo-ping 2019, 48(01): 7-10.  DOI: 10.3969/j.issn.1009-7791.2019.01.002 Abstract ( )   PDF (7436KB) ( )   In order to study the effect of 60Co-γ irradiation on seed germination and seedling growth of Camellia drupifera, seeds from two excellent C. drupifera cultivars were treated by different doses of 60Co-γ irradiation (0, 40 Gy, 50 Gy, 60 Gy and 70 Gy). The germination rate, survival rate and morphological indices including height, ground diameter, leaf length, leaf width and leaf area of C. drupifera were measured. Results showed that 60Co-γ irradiation had a small effect on germination rate, but inhibited survival rate and the growth of height, ground diameter, and leaf. High doses irradiation (60 Gy and 70 Gy) could cause serious damage to the seeds, had a strong impact on seed germination and seedlings growth. With the treatment of high doses of irradiation, the seedlings growth were inhibited and the seedlings were weak and thin, seedling plants were dwarfed compared with the control group. The leaf growth was also inhibited under high does irradiation. Under 60Co-γ irradiation, the half lethal dose of ‘Fanlong 3’ was 64 Gy, and ‘Fanlong 5’ was 57 Gy. References | Related Articles | Metrics

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Effect of Magnesium Fertilizer on Growth and Element Accumulation of Pinus massoniana Seedlings WU Xiu-rong, ZHOU Yun-chao, YU Xing 2019, 48(01): 11-16.  DOI: 10.3969/j.issn.1009-7791.2019.01.003 Abstract ( )   PDF (471KB) ( )   In order to investigate the responses of Pinus massoniana leaf nutrition and growth to different magnesium fertilizer levels, 1-year-old seedlings of P. massoniana from the superior provenances were used as experimental materials. Four magnesium fertilizer gradients(42 g·m-2, 85 g·m-2, 170 g·m-2, 339 g·m-2) were set up to determine the growth index and leaf nutrient content of P. massoniana seedlings. Results showed that application of Mg could promote the accumulation of P, K, Ca, Fe, Cu and Zn, and inhibit the accumulation of N, Mg and Mn. When the amount of Mg fertilizer was 85 g·m-2, the inhibition of N, Mg and Mn accumulation was not significant, but the promotion of P, K, Ca, Fe, Cu and Zn accumulation was the greatest, seedling growth was the best. So the optimum amount of fertilization was 85 g·m-2. Magnesium application could not promote the absorption of magnesium by seedlings, but could change the soil environment of nutrient supply, thus changing the proportion of plant to other nutrients and affecting the growth of plants. The growth of seedlings was most closely related to Fe, P, K, followed by Mg, Mn, Ca, N, Cu, Zn. References | Related Articles | Metrics

Plant ecology, resources and taxonomy

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Chromium and its Transfer Characteristics in Soil-vegetable System in Fujian HUANG Yan 2019, 48(01): 17-20.  DOI: 10.3969/j.issn.1009-7791.2019.01.004 Abstract ( )   PDF (5021KB) ( )   This paper investigated the transfer characteristics of Cr from soil to vegetable based on the investigation from 28 vegetables and its soil in Fujian. The main results were as follows: The average contents of total Cr of soil was 53.61 mg·kg-1, which was lower than the Cr limit for agricultural land in the Chinese soil environmental quality standard (pH<6.5, dryland<150 mg·kg-1). The average content of available Cr of soil was 0.92 mg·kg-1. The Cr contents of edible parts of vegetables ranged between 0.001—0.321 mg·kg-1. The Cr contents of vegetable samples in the investigation areas were all lower than the national standard of food safety. The Cr contents of turnip and swamp cabbage had significant positive correlation with the soil total Cr. The Cr contents of edible parts of most vegetables species had not significant correlation with the soil available Cr. Using the DPS statistical software, the transfer coefficient of Cr from soil to vegetable was categorized into three categories: the low, the medium and the high transfer capacity, which would give scientific guiding to planting vegetables. References | Related Articles | Metrics

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Seed Dormancy Mechanism and Its Ecological Significance of Endangered Species Rosa praelucens PAN Li-jiao, GUAN Wen-ling, LI Yi-hang 2019, 48(01): 21-25.  DOI: 10.3969/j.issn.1009-7791.2019.01.005 Abstract ( )   PDF (6983KB) ( )   Seed structure and its water permeability of Rosa praelucens were studied, and the effects of GA3 treatment on embryo were determined. Meanwhile, the activities of crude extract from shell, testa and endosperm were carried out. The results showed that: (1) The testa of R. praelucens is composed of multiple thick-walled cells, arranging compactly, endopleura is composed of hard and dense palisade tissue. (2) The testa has a greater resistance to seed expansion, and the water absorption rate of untreated seed is low. The increment after water absorption 13 d is 18.82%. (3) The average seed setting rate of fruit is 0.69%, and there are no full seeds in most fruits. (4) Pretreatment with 100 mg·kg-1 GA3 can accelerate the germination rate of embryo; (5) Endogenous inhibitors are found in shell, testa and endosperm. The seed dormancy of R. praelucens is a combinational dormancy caused by its morphological and physiological characteristics. References | Related Articles | Metrics

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Factors for Promoting Growth of Phoebe bournei Cultivated in Pinus massoniana Forest LIN Su-jiao 2019, 48(01): 26-30.  DOI: 10.3969/j.issn.1009-7791.2019.01.006 Abstract ( )   PDF (5041KB) ( )   Effects of different management and canopy density on height, DBH (diameter at breast height), volume of individual tree of Phoebe bournei was carried out by randomized block design. The results showed that three kinds of multiple layered patterns of interplantation extremely significantly improved the growth of P. bournei compared with cutting-blank forestation. The height, DBH and the current annual volume of individual tree and average increment showed a yearly increase in 1—12 years, showing 1—12 years old was fast growing stage. The multiple layered pattern of interplanting P. bournei with long-term canopy density at 0.4 to 0.5 would greatly help the growth of P. bournei and would be one of the key techniques managing the multiple layered P. bournei forest. References | Related Articles | Metrics

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Stand Density Index of Scenic Forest of Rhododendron moulmainense in Wutong Mountain, Shenzhen WANG Ding-yue, SHI Bo, CHEN Shi-qing, LI Wen-hua, LIN Jin-tao 2019, 48(01): 31-35.  DOI: 10.3969/j.issn.1009-7791.2019.01.007 Abstract ( )   PDF (498KB) ( )   Density index of Rhododendron moulmainense aesthetic forest was studied. Results showed that R. moulmainense had sufficient growth space when the density of upper tree was 250—350 plants·hm-2. According to standard survey, the lower density of R. moulmainense, the better its growth. Considering the continuity of ecological landscape, and avoiding large forest window, the lowest density of R. moulmainense was confirmed by crown coefficient method. The lowest density of R. moulmainense in Wanhuaping was 437 plants·hm-2. The lowest density of Xiaowutong was 733 plants·hm-2. References | Related Articles | Metrics

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Community Characteristics and Protection Measures of Wild Camellia sinensis var. pubilimba in Renhua County LIU Yi-rong, LIU Jia, HUANG Yan-shuang, CHEN Zai-xiong, ZHAO Wan-yi, FAN Qiang, LIAO Wen-bo 2019, 48(01): 36-44.  DOI: 10.3969/j.issn.1009-7791.2019.01.008 Abstract ( )   PDF (7869KB) ( )   Four artificial bamboo communities and one virgin community of Camellia sinensis var. pubilimba in Renhua county, Guangdong province were studied by quadrate investigation and community ecology analysis. The results showed that: (1) In 5 wild Camellia sinensis communities, there were 177 species of vascular plants, belonging to 119 genera in 63 families, including 21 species of pteridophytes belonging to 17 genera in 13 families, and 155 species of seed plants belonging to 101 genera in 49 families. (2) The dominant species in the tree layer were Phyllostachys heterocycle & Cunninghamia lanceolate (artificial bamboo community) or Machilus chinensis & Luculia gratissima (virgin community); the dominant species in the shrub layer were Camellia sinensis var. pubilimba, Alchornea trewioides, Lindera nacusua; The dominant species in the herb layer were Blechnum orientale, Microstegium fasciculatum, Tetrastigma hemsleyanum. (3) In addition to the secondary forests, Simpson index, Shannon-wiener index and evenness of herb layer in other communities were higher than those of tree layer and shrub layer, which may be the result of the combined action of natural succession process and human logging activity. (4) Wild Camellia sinensis var. pubilimba was more suitable for secondary forest under moderate disturbance. The relatively wet sunny slope was conducive to its development. (5) There were 258 wild Camellia sinensis var. pubilimba strains in 5 communities, but they were all seedlings, and the growth condition was not very well. Effective protection and moderate interference should be taken, meanwhile, the public education should be carried out to protect the existing wild resources. References | Related Articles | Metrics

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Wild Survival Situation and Protection of Lirianthe championii WANG Ya-ling, WANG Jing, ZHANG Shou-zhou 2019, 48(01): 45-49.  DOI: 10.3969/j.issn.1009-7791.2019.01.009 Abstract ( )   PDF (5071KB) ( )   Based on herbarium and wild investigation, the wild survival situation and endangered reasons of Lirianthe championii were studied. Results showed that, the distribution altitude of wild L. championii showed a decreasing trend and tended to distribute along ditches because of the deterioration of its living environment. Human damage was not the direct reason of the decline of wild L. championii population. Reproductive ability decline and inability of its physiological and ecological characteristics to the existing habitat was the direct cause. Wild L. championii population had been in a state of continuous decline and should be classified as ‘UV(Vulnerable)’ protection level. References | Related Articles | Metrics

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Morphological Variation and Reproductive Application of Michelia maudiae var. rubicunda LANG Xiao-an, YANG Lei-lei, ZHANG Su-zhou, LI Ling-fei, ZHANG Shou-zhou 2019, 48(01): 50-55.  DOI: 10.3969/j.issn.1009-7791.2019.01.010 Abstract ( )   PDF (5719KB) ( )   Michelia maudiae var. rubicunda is a new variety of Magnoliaceae that has been rapidly applied in landscape since discovered in 2007. On the basis of literature review and field investigation, this paper analyzed the discovery history, character variation, propagation technology and application of M. maudiae var. rubicunda. The results showed that it was a native tree species, but few distributed in wild. Character segregation could be easily appeared among the seedlings thus provide valuable resources for development of its germplasm. The current breeding of this variety is mostly through grafting. The right grafting methods and the cultivation management can effectively obtain enough seedlings. References | Related Articles | Metrics

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Landscape Application of Several Native Groundcover Plants with Shade and Drought Tolerance in Pearl River Delta LI Yu, YANG Liu-hui, WU Xian, HUANG Xiao-feng, WU Yong, FENG Xin-xin 2019, 48(01): 56-62.  DOI: 10.3969/j.issn.1009-7791.2019.01.011 Abstract ( )   PDF (15272KB) ( )   Twelve sample plots from Guangzhou Baiyun mountain, Zhaoqin Dinghu mountain, Shenzhen Wutong mountain, Huizhou Nankun Mountain, Dongguan Yinping mountain and Shuilianshan were setting up, comprehensive assessment of native ground cover plants in sample plots were surveyed by linearity weighted integrative method of mathematical model. According to live form, habitat and height of plant, 70 species of native wild groundcover plants were selected for application to landscape, 8 species native groundcover plants with shade and drought tolerance were especially introduced, such as Ardisia japonica, Ardisia squamulosa, Strobilanthes cusia. In application practice, they grew very well in Dongguan Botanical Garden. References | Related Articles | Metrics

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Evaluation on Promotion of Colored Landscape in Xiamen Huandao Road Based on Analytic Hierarchy Process LIN Hui, CHEN Jun-hui 2019, 48(01): 63-69.  DOI: 10.3969/j.issn.1009-7791.2019.01.012 Abstract ( )   PDF (5181KB) ( )   This study uses analytic hierarchy process (AHP) to construct the evaluation model of flower-colored landscape promotion in Xiamen-Huandao Road from five aspects of ecological value, landscape value, subjective perception, economic applicability and functionality. 22 indicators such as species richness, vegetation type diversity, plant monomer ornamental characteristics, plane composition, color composition, artistic conception beauty, cultural connotation, and plant health are used. The evaluation criteria are used to evaluate and grade 77 landscape units, and 16Ⅰ-level landscape units are obtained as references for future landscape promotion, and several improvement suggestions are proposed for the flower-colored landscape promotion project in Xiamen City based on the evaluation results. References | Related Articles | Metrics

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Alien Plants from Sanqingshan Mountain in Jiangxi Province HU Wan-ting, ZANG Min, Lin Zhi-hui, WANG Xiao-wan, WEI Pan-qin, ZOU Tian-e 2019, 48(01): 70-76.  DOI: 10.3969/j.issn.1009-7791.2019.01.013 Abstract ( )   PDF (5088KB) ( )   Based on investigation and related literatures, the species composition, origin areas, life forms, invasive methods of alien plants were analyzed in Sanqingshan Mountain. The results showed that a total of 140 species were identified in alien plants, belonging to 103 genera in 47 families, accounting for 6.94%, 24.23% and 11.73% of the total amount of species, families and genera of vascular plants in Sanqingshan Mountain, respectively. Among them, a total of 82 species were identified in alien invasive plants，belonging to 56 genera in 31 families , accounting for 58.57%, 65.96% and 53.85% of the total amount of species, families and genera of alien plants. The dominant families were Asteraceae, Leguminosae, Amaranthaceae, Cucurbitaceae, Solanaceae, Cruciferae, Chenopodiaceae and Convolvulaceae. The alien plants were mainly from America. Terrestrial herbs were the primary in life forms. Intentionally introduced by human being was the main pathway. The main incursive injury was gradeⅡaccording to the damage grades of these species. References | Related Articles | Metrics

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Two New Ilex (Aquifoliaceae) Species from Fujian HE Guo-sheng 2019, 48(01): 77-80.  DOI: 10.3969/j.issn.1009-7791.2019.01.014 Abstract ( )   PDF (1509KB) ( )   Two new species of Aquifoliaceae, Ilex tainingensis G. S. He, I. nanpingensis G. S. He, are described from Fujian, China. The new species I. tainingensis young branchlets with terra brown short hair, no angular and sulcate, leaf ovate or ovate-elliptic, corolla orchid, surface has thin striate and a sulcate in the middle of the back, differs from I. sugerokii Maxim. I. nanpingensis is similar to I. subficoidea S.Y. Hu, but differs in its fruit oval, smooth (not densely tuberculate), and pyrenes top have two sharp corner. References | Related Articles | Metrics

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New Records of Three Species of Plants in Fujian Province CHEN Xin-yan 2019, 48(01): 81-83.  DOI: 10.3969/j.issn.1009-7791.2019.01.015 Abstract ( )   PDF (8324KB) ( )   One genus and three species were reported as new records to Fujian Province, China, i.e. Sinojohnstonia chekiangensis, Desmodium heterocarpon subsp. angustifolium, and Hedyotis effusa. All of them are new recorded species in Fujian Province. The Sinojohnstonia is a new recorded genus in Fujian Province. References | Related Articles | Metrics

Plant tissue culture and plant protection

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Screening Optimal Medium for Inducing Callus and Buds of Polygonatum cyrtonema YE Yu-xin, REN Meng-ting, YI Wei-hao, QI Qing, PENG Dai-yin, XING Shi-hai 2019, 48(01): 84-87.  DOI: 10.3969/j.issn.1009-7791.2019.01.016 Abstract ( )   PDF (6063KB) ( )   Rootstocks of Polygonatum cyrtonema were used as explants, and the effects of different plant growth regulators and their combinations on the callus induction were studied by L9(34) orthogonal test. The well medium was screened for directly buds formation by organogenesis of this medicinal plant. The results showed that the effect of callus induction was remarkable in medium containing 2,4-D and KT. The optimum medium for callus induction was MS + 6-BA 2.0 mg·L-1 + 2,4-D 0.5 mg·L-1 + NAA 0.1 mg·L-1 + KT 1.0 mg·L-1, and the callus induction rate reached up to 39.10%. The medium of MS + 6-BA 4.0 mg·L-1 + NAA 0.2 mg·L-1 was optimal for inducing adventitious buds. References | Related Articles | Metrics

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Infectivity Comparison of Two Botrytis Species on Petals and Leaves of Different Lilium Varieties LIU Xu-yan, LI Kui-xiu, DUAN Lian-jie, LIU Guan-ze 2019, 48(01): 88-90.  DOI: 10.3969/j.issn.1009-7791.2019.01.017 Abstract ( )   PDF (5571KB) ( )   Botrytis cinerea and Botrytis elliptica were determined for infection of different Lilium cultivars, aiming at clarification of the pathogenicity of the two Botrytis species. The main cultivated lily varieties in Yunnan Province were collected and in vitro inoculated with the two Botrytis species. The results showed that lesions caused by B. cinerea in petals occurred earlier than that in leaves. On the other hand, the occurrence time of the lesions caused by B. elliptica in petals varied in different lily cultivars (48 h or later). There was no lesion caused by B. elliptica on leaves of ‘Conca D’or’ after 96 h inoculation, while the lesion on petal caused by B. elliptica was observed after 48 h inoculation, which suggested that the leaves of ‘Conca D’or’ were more resistant than the petals to infection by B. elliptica. References | Related Articles | Metrics

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Resistance Identification of Potato Germplasm Resources to Phytophthora infestans WANG Hong-yang, LIU Jing, DONG Jin-mei, ZHANG Ting-ting, ZHENG Nan-nan, YAN Yi, LI Can-hui 2019, 48(01): 91-95.  DOI: 10.3969/j.issn.1009-7791.2019.01.018 Abstract ( )   PDF (3928KB) ( )   In this study, 43 potato germplasm were evaluated by inoculating Phytophthora infestans on leaves in vitro, and ‘Désirée’ and ‘Jiaxiang 1’ were used as susceptible and resistance controls, respectively. The results showed that 5 germplasm with high resistance to P. infestans were identified, including 3 Solanum phurejia germplasm (No. 1, No.2, and No. 3) and 2 S. tuberosum?ssp. andigena germplasm (No. 4 and No. 5), according to the disease symptoms of ‘Désirée’ and ‘Jiaxiang 1’ leaves after inoculation for 5 days. In addition, 14 moderate resistant materials (No. 7 to No. 20) were identified. The results indicated that there were plenty of disease resistance germplasm in wild and S. tuberosum?ssp. andigena germplasm, which could be used as parent material in late blight resistance breeding. References | Related Articles | Metrics

Review

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Advances in Research on Ornamental Plant Heat Tolerance XU Lan-xin, TIAN Ru-nan 2019, 48(01): 96-102.  DOI: 10.3969/j.issn.1009-7791.2019.01.019 Abstract ( )   PDF (5107KB) ( )   Based on the research status of plant heat resistance all over the world, this review briefly showed changes of anatomy structure and cell micro-structure in plants under heat, and the influences of physiological characteristics including photosynthesis, transpiration, osmotic adjustment and gene expression changes in plants under high temperature stress. This review briefly summarized series of measures enhancing the heat resistance, and put forward suggestions about heat resistance of ornamental plants. References | Related Articles | Metrics