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30 August 2020, Volume 49 Issue 04 Previous Issue    Next Issue
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Plant physiology and biochemistry
Plant ecology, resources and taxonomy
Plant protection
Herbal textual research
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Plant physiology and biochemistry

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Effects of Foliar Sprayed Methyl Jasmonate on Potato Minituber Growth and Yield YANG Tian-yu, HAN Xiao-nü, XU You-xian, TANG Jin-xiang, ZHAN Kang, WU Jin-song, WANG Lei 2020, 49(04): 247-252.  DOI: 10.3969/j.issn.1009-7791.2020.04.001 Abstract ( )   PDF (280KB) ( )   In this study, using greenhouse-grown Solanum tuberosum ‘Yunshu 505’ plants as experimental material, we measured the levels of jasmonic acid in four early tuberization stages, and explored the effect of foliar sprayed methyl jasmonate on the growth and yield of minituber. The results indicated that the levels of jasmonic acid were increased as tubers enlarged. During minituber cultivation, 100 μmol·L-1 methyl jasmonate (MeJA) solution or mock solution (CK) was sprayed by different frequencies on leaf surface, and the statistical changes in agronomic trait and yield were analyzed. Our results showed that compared with CK, the average stem diameter with once per day treatment was increased by 36.1%, and the chlorophyll content in twice per day treatment was reduced by 20.1%. Moreover, no significant difference was detected after MeJA treatment between groups in either morphological traits including leaf color, stem color, flower color, plant architecture, or tuber traits including tuber uniformity, tuber shape, peel color, flesh color, peel type, eye depth, crack tuber rate, large-sized tuber hollow rate. Moreover, the plant survival rates in twice per day, once per day, once every 2 days, and CK treatment were 45.57%, 100.00%, 100.00%, and 87.29%, respectively. Compared with CK, the equivalent yields in MeJA treatment above were increased by -15.61%, 8.77%, and 12.11%, respectively. Taken together, our results showed that the levels of jasmonic acid were increased at the early stages of tuberization, and the potato plants which were foliar sprayed with 100 μmol·L-1 methyl jasmonate once every 2 days had the maximal yield without the cost of growth. References | Related Articles | Metrics

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Morphological and Physiological Response of Paspalum wetsfeteini to Nutrient Deficiency Stress WANG You-sheng, LIN Xiu-feng, JIAN Li-hua, WANG Yi-he, LIAO Zhuo-wu 2020, 49(04): 253-257.  DOI: 10.3969/j.issn.1009-7791.2020.04.002 Abstract ( )   PDF (504KB) ( )   To explore the mechanism of Paspalum wetsfeteini under nutrient deficiency stress, the identical genotype seedlings was bred by tillering reproduction to test the contents of chlorophyll, proline, soluble sugar, soluble protein and the activities of SOD, POD and CAT. The results showed that SOD and POD activities reached the highest value after 20 days of nutrient deficiency, the contents of proline, soluble sugar, soluble protein and CAT activities peaked after 30 days of nutrient stress. Chlorophyll content did not change significantly (P>0.05) in 10 to 30 days under nutrient deficiency until 40 days and later (P<0.05). Malondialdehyde showed no significant difference in 10 to 20 days after stress, but increased significantly after 30 days (P<0.05). After 60 days of stress, the plant height, leaf length, leaf width, total root length and root surface area were 55.61%, 64.85%, 65.0%, 140% and 136% of fertilization treatment, respectively. At the same time, mesophyll cells became narrower and longer, and leaf back villi shortened to be about 5% of the fertilization treatment. References | Related Articles | Metrics

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Effects of Harvesting Time on Quality and Storability of Psidium guajava ‘Hongxin’ Fruit JIN Yi, WU Shao-bin, CHEN Hong-bin, ZHANG Chao-kun, JIANG Xuan-jing 2020, 49(04): 258-263.  DOI: 10.3969/j.issn.1009-7791.2020.04.003 Abstract ( )   PDF (384KB) ( )   In order to investigate the effects of different harvest times on the storability and quality of ‘Hongxin’ guava (Psidium guajava) fruit, the physiological characteristics of the harvested fruits were studied. ‘Hongxin’ guava cultivated in Zhangzhou, Fujian were used as the experimental material. The three harvest dates chosen for the experiment were 95 d after anthesis (harvest time Ⅰ), 105 d (harvest time Ⅱ) and 115 d (harvest time Ⅲ). The commercially acceptable fruit rate, weight loss rate, respiration intensity, relative electrical conductivity, hue angle, hardness, soluble solids, titratable acid, vitamin C and total sugar content of ‘Hongxin’ guava fruits on different harvest times were estimated during storage at room temperature (25±1 ℃) and 85% relative humidity. The results showed that the ‘Hongxin’ guava fruit softened rapidly and the peel color changed from green to yellow quickly after harvest. With increasing storage time, the commercially acceptable fruit rate, hardness, hue angle, titratable acid, vitamin C and total sugar of guava fruit decreased whereas the weight loss rate and the relative permeability of cell membrane increased. The ‘Hongxin’ guava fruit at harvest time Ⅰ showed better storability than harvest time Ⅱ and Ⅲ. Therefore, it was suitable to be harvested at harvest time Ⅰ for long storage and transport, whereas the other two harvest periods could be sold locally for ‘Hongxin’ guava fruit. References | Related Articles | Metrics

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Optimization of Deproteinization Process of Polysaccharides Extracted from Smilax glabra Roxb. by Response Surface Methodology LI Cong, QIU Kun-cheng, XIE Zhi-kuan, XIE Yu-bin, ZHU Wei 2020, 49(04): 264-269.  DOI: 10.3969/j.issn.1009-7791.2020.04.004 Abstract ( )   PDF (353KB) ( )   To investigate the deproteinization process of polysaccharides extracted from Smilax glabra Roxb. by response surface methodology. Polysaccharide was extracted by water?extraction and alcohol?precipitation.?And a sevage method was used in the deproteinization progress. Through the detection of deproteinization efficiency and polysaccharide retention rate, the deproteinization process of polysaccharides extracted from S. glabra Roxb. was optimized by response surface methodology. The results showed that the best deproteinization conditions were as follows: sevage reagent:the test liquid=1:3; shaking intensity, 8 (range1-10); shaking time, 10 min; and deprieinization times, 5; giving a percentage of deproteinization of 97.39% and polysaccharide retention of 74.13%. The optimized process had good repeatability and small error, and could be used in the process of S. glabra Roxb. polysaccharide deproteinization. References | Related Articles | Metrics

Plant ecology, resources and taxonomy

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Ecological Stoichiometry of Common Parasitic Plants and the Relationship with Their Hosts in Xishuangbanna, Yunnan MEN Shi-zheng, LIU Wen-yao, MO Yu-xuan, ZHANG Ting-ting, FAN Xiao-yang 2020, 49(04): 270-278.  DOI: 10.3969/j.issn.1009-7791.2020.04.005 Abstract ( )   PDF (409KB) ( )   In order to explore the ecological stoichiometric characteristics and homeostasis of common parasitic plants in tropical Yunnan, two dominant hemiparasitic species Scurrula chingii var. yunnanensis, Dendrophthoe pentandra and one dominant holoparasitic plant Cuscuta japonica and their hosts were selected in tropical area of Xishuangbanna, Yunnan. The results showed that the leaves of two hemiparasitic plants had lower C, N contents and N:P ration but higher P content compared with common terrestrial plants; holoparasitic plant C. japonica had higher N and P contents, but lower N:P. The C:N, C:P ratios of the two hemiparasitic plants were significantly higher than those of holoparasitic plant C. japonica. There was not significant seasonal variation in stoichiometry of C, N and P of the hemiparasitic and holoparasitic plants. Compared with the holoparasitic plants, the hemiparasitic plants had a stronger correlation with their hosts. The homeostasis indexes of C, N, P stoichiometry of holoparasitic plant C. japonica were significantly higher than those of two hemiparasitic plants. The homeostasis indexes of the holoparasitic plant C. japonica in the rainy season were significantly higher than those in the dry season. References | Related Articles | Metrics

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Preliminarily Studies on Functional Diversity and Adaptability of Angiosperms in Special Habitat from Mengdong River Valley, Hunan Province TAN Lu, DENG Tao, ZHANG Dai-gui, LIU Bing, CHEN Gong-xi 2020, 49(04): 279-285.  DOI: 10.3969/j.issn.1009-7791.2020.04.006 Abstract ( )   PDF (303KB) ( )   To explore the relationship between the functional properties and ecological adaptability of angiosperms in the special habitat of the Mengdong River Valley in Hunan, the method of combining line survey and sample survey was adopted to investigate and analyzed from life habits, leaf properties, sexual system, fruit type and seed transmission of angiosperms in the Mengdong River Valley. The results indicated that: (1) The Life habits in this area was mainly herbaceous, indicating that the valley habitat was more suitable for the development and survival of herbaceous. (2)The shape of leaf organs was dominated by papery leaves, leaf two sides glabrous and the middle leaf type, forming a series of features adapted to river valley habitats. (3) In terms of sexual system composition, the family was dominated by two or more sexual systems, and the genus and species were dominated by hermaphroditism, indicating that the plant propagation in the river valley habitat were diverse. (4)The fruit types were abundant, among which capsules, berries and achenes appear more frequently, and with dried fruit based, indicating that the river valley habitat was highly heterogeneous and was also suitable for the survival of dried fruit plants. (5) The main method of seed transmission was mechanical transmission, showing that the gradient of the river valley was steep hence it was suitable for the seeds to roll automatically for a long distance to spread. References | Related Articles | Metrics

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Analysis of Vegetation Structure of Typical Cunninghamia lanceolata Forest in Shimen National Forest Park WANG Zhi-he, MA Hong-yan, ZHANG Hui-lin, LI Jun-jie, ZHU Zi-piao, MA Zi-hao, LAI Wu-ting 2020, 49(04): 286-291.  DOI: 10.3969/j.issn.1009-7791.2020.04.007 Abstract ( )   PDF (337KB) ( )   The present study aimed to investigate the composition and diversity of arbor, undergrowth, inter and herbaceous layers of the represented south subtropical Cunninghamia lanceolata forest in Shimen National Forest Park. It was found that C. lanceolata accounted for 39.7% to 68.7% of the composition of the arbor layer while other tree species (e.g. Schima superba, Pinus massoniana, Diospyros morrisiana, Machilus chinensis and Schefflera octophylla) occupied about 31.3% to 60.3% of the composition of the arbor layer. There were 50 species of undergrowth plants and shrubs, 21 interlayer species and 19 herbaceous species, evidencing high plant diversity in the forests. The overall Shannon-Wiener diversity index of undergrowth plants was 2.73. The results provide an important basis for the conservation, development and promoting the succession of forest vegetation to a higher stage in south subtropical zone, especially for Shimen National Forest Park. References | Related Articles | Metrics

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Analysis of Plant Application to Low Impact Development Facilities of Park Green Space in Guangdong GAO Hong-juan, SHI Zheng-jun, XU Yan, LEI Jiang-li 2020, 49(04): 292-298.  DOI: 10.3969/j.issn.1009-7791.2020.04.008 Abstract ( )   PDF (308KB) ( )   Based on general inspections of parks in Guangzhou, Shenzhen and Zhuhai, nine parks with low-impact development facilities were selected as survey sites, and field investigations, records, and analysis of types, structures, scales, and plant landscape of low-impact development facilities were carried out. The results showed that the most commonly used types of low-impact development facilities in park green space were planting ditch, rain gardens and dry streams. A total of 87 species of plants were recorded in the low-impact development facilities, belonging to 79 genera in 49 families, and most of them were Fabaceae and Poaceae. Different planting areas of low-impact development facilities had different requirements for plant tolerance according to water accumulation. Rain gardens and dry streams were the most abundant in terms of plant species and configuration landscapes. Finally, in view of the widespread problems in the application of low-impact development facilities in park green space, suggestions were recommended based on plant selection, landscape configuration and post-maintenance. References | Related Articles | Metrics

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Two Newly Recorded Species of Orchids from Guangdong, China PAN Yun-yun, CHEN Jian-bing, CHEN Yu-ning, RAO Wen-hui 2020, 49(04): 299-302.  DOI: 10.3969/j.issn.1009-7791.2020.04.009 Abstract ( )   PDF (663KB) ( )   Bulbophyllum yongtaiense J. F. Liu, S. R. Lan & Y. C. Liang and Liparis formosana Rchb.f. were reported as newly recoded taxa from Guangdong province, China. Description and photos were provided. Living plants were stored in the National Orchid Conservation Center, and voucher specimens were stored in the herbarium of the Orchid Conservation & Research Center of Shenzhen (NOCC). References | Related Articles | Metrics

Plant protection

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Active Regularity of Monochamus alternatus Adults in Xinluo District, Longyan, Fujian WANG Shao-neng 2020, 49(04): 303-306.  DOI: 10.3969/j.issn.1009-7791.2020.04.010 Abstract ( )   PDF (287KB) ( )   Using the APF-Ⅰtype and ZM-808 type trap developed by Fujian Agriculture and Forestry University to trap the adults of Monochamus alternatus, the law of their activities in Xinluo District of Longyan City, Fujian Province was found out, which provided the basis for the scientific implementation of Bursaphelenchus xylophilus prevention and control technology. The results showed that the adults of M. alternatus started to move in late March, which was the early stage. The activity peak period was from mid-May to mid-July, the activity final stage of M. alternatus was from late July to early November and there was no activity from mid-November to early March of the following year. A total of 824 adult beetles were collected throughout the year, including 701 females and 123 males, with a ratio of 1:0.18 males to females. The number of female adults was far more than that of males. To control of B. xylophilus, trapping and killing of M. alternatus should be carried out from late March to mid-late October. All dead trees of unknown reason found before the end March should be cleaned up. At the same time, the prevention and control of the adults of M. alternatus in the forest should be strengthened, and the hidden dangers of transmission should be completely eradicated. References | Related Articles | Metrics

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Occurrence of Phauda flammans Walker in Xiamen LIN Qi-tian, LIN Hui, XIE Chang-wei, LIN Li, HONG Chen-jie, OU Yun-feng 2020, 49(04): 307-311.  DOI: 10.3969/j.issn.1009-7791.2020.04.011 Abstract ( )   PDF (673KB) ( )   Phauda flammans is an important leaf-feeding insect in Ficus. According to fieldwork, P. flammans has widely distributed in Xiamen. It mainly damages F. microcarpa and F. benjamin, caused a minor harm to F. altissima and F. microcarpa ‘Golden Leaves’. P. flammans has three generations a year in Xiamen. The population of P. flammans young larvae has peaks in early May for generation 1, mid July for generation 2 and mid October for generation 3, which are the suitable periods for the application of pesticides. References | Related Articles | Metrics

Herbal textual research

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Herbal Textual Research of Duheng in Bencao Tujing CHEN Yu-yan, CHEN Xue, HUANG Ze-hao 2020, 49(04): 312-316.  DOI: 10.3969/j.issn.1009-7791.2020.04.012 Abstract ( )   PDF (581KB) ( )   Duheng, a traditional Chinese medicine record in the Bencao Tujing, was researched on its nomenclature, characteristic, geographical distribution, efficacy and illustration by consulting ancient books and modern documents, and explored the original plant. The results showed that the original plants of Duheng recorded in Bencao Tujing might include two species, Asarum forbesii Maxim and Asarum ichangense C. Y. Cheng et C. S. Yang. The results could provide new evidence for comprehensive understanding the original plants of Duheng and reference for clinical application of Duheng. References | Related Articles | Metrics

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Research on Jianzhou Medicine Plant Illustrations in Bencao Tujing YANG Hong-xia, SHEN Xian-juan, HUANG Ze-hao 2020, 49(04): 317-322.  DOI: 10.3969/j.issn.1009-7791.2020.04.013 Abstract ( )   PDF (796KB) ( )   There were a total of 22 kinds of medicines marked as produced in Fujian in the medicine illustrations attached to Bencao Tujing, of which there were 3 kinds produced in Jianzhou (present Nanping, Fujian), namely Jianzhou Tianmendong, Jianzhou Qianhu, Jianzhou Zhizi. This paper verified the medicine illustrations and written records, and believed that Jianzhou Tianmendong should be the present Asparagus cochinchinensis (Lour.) Merr. (Liliaceae), and Jianzhou Qianhu should be the present Ostericum citriodorum (Hance) Yuan et Shan (Umbelliferae), Jianzhou Zhizi should be the present Gardenia jasminoides Ellis (Rubiaceae). References | Related Articles | Metrics

Review

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Research Advances in Quality Deterioration and Storage Technologies of Harvested Passion Fruit CHEN Guo, LIN Yu-zhao, GUO Xin, LIN He-tong 2020, 49(04): 323-328.  DOI: 10.3969/j.issn.1009-7791.2020.04.014 Abstract ( )   PDF (284KB) ( )   Passion fruit (Passiflora caerulea) is a characteristic subtropical and tropical fruit with rich nutritious value. However, the postharvest passion fruit is prone to quality deterioration, which is the main factor limiting the shelf life of harvested passion fruit. In order to provide the theoretical direction for maintaining the fruit quality and extending the shelf life of harvested fresh passions, the research advances of quality deterioration (i.e. fruit shrinkage, weight loss, changes in pericarp color, decrease of nutrient content and postharvest disease occurrence), and the storage technologies including low temperature, heat treatment, packaging, 1-methylcyclopropene (1-MCP), polysaccharide and chemical preservatives at home and abroad were reviewed in this paper. References | Related Articles | Metrics