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植物标样多元素测定的五种前处理方法比较 被引量:33
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作者 吴建之 葛滢 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 1999年第3期369-372,共4页
本文采用植物样品的五种前处理方法,即干灰化法、硝酸+硫酸+高氯酸法、硝酸+硫酸+高氯酸+氢氟酸法、硫酸+过氧化氢法、灰化+碱熔法,对植物标样GBW07603作样品分解,试液用ICP-AES法进行十九种常量及微量元素的... 本文采用植物样品的五种前处理方法,即干灰化法、硝酸+硫酸+高氯酸法、硝酸+硫酸+高氯酸+氢氟酸法、硫酸+过氧化氢法、灰化+碱熔法,对植物标样GBW07603作样品分解,试液用ICP-AES法进行十九种常量及微量元素的测定。通过分析结果的比较,为植物学和植物生态学等学科的化学元素分析选择适用的前处理方法提供依据。 展开更多
关键词 植物标样 ICP AES 植物生态学 元素分析
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Survey and Conservation of Indigenous Fruits of Western Ghats
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作者 Prakash Chandra Tripathi Ganesan Karunkaran +1 位作者 Vadivel Sankar Rathnam Senthil Kumar 《Journal of Agricultural Science and Technology(A)》 2015年第7期608-615,共8页
Western Ghats region of India is one of the biodiversity hotspots of the world. The topography, wide rainfall variation and varied temperature conditions enable inhabitancy of several plant species. This plant wealth ... Western Ghats region of India is one of the biodiversity hotspots of the world. The topography, wide rainfall variation and varied temperature conditions enable inhabitancy of several plant species. This plant wealth is being used in various forms by tribes and natives of the area for centuries. These gain further importance due to the fact that ripe fruits serve as a source of food and medicine to tribes throughout the year. These wild fruits are source of minerals and vitamins in the diet of the rural people. The potential productivity and floristic diversity of the area have attracted the experts. There are more than 50 wild edible fruit species are available in Western Ghats region. These belong to 25 families and 38 genera. Out of the 25 families, the important ones as a source of fruits are Apocynaceae, Anacardiaceae, Euphorbiaceae, Moraceae, Sapotaceae and Sapindaceae. The fruiting period of different species ranges between two and six months. The highest number of species mature from April to May. The availability of these fruits reduces after October. Some of these fruits, such as Mangifera indica, Artocarpus heterophyllus, Carissa carandas, Emblica officinalis and Syzygium cuminii, have been given emphasis in order to identify high yield and high fruit quality clones and standardization of production technologies. The collection, conservation and utilization on some of the fruits, such as Garcinia indica and Garcinia gummigutta have started at various research organizations. Some other fruits, namely Chrysophyllum roxburghii (Family Sapotaceae), Canthium parviflora Lamk syn. Plectronia parviflora (Lam.) Bedd. (Family Rubiaceae), Elaeagnus conferta Roxbsyn, Elaeagnus latifolia L. (Family Elaeagnaceae), Securina leucopyrus syn. Flueggea leucopyrus (Family Euphorbiaceae), Elaeocarpus tuberculatus Roxb. (Family Elaeocarpaceae), Nephelium stipulacum Bedd. syn. Doratoxylon stipulatum (Family Sapindaceae) have potential for commercial cultivation. Thus, attempts were made with the objective of recording availability of these species, proximate analysis and their on farm and off farm conservation at Central Horticultural Experiment Station (CHES). Few plants were also provided to local growers on farm conservation. The continuous depletion of forest and the increasing human disturbance resulted in losses of these species. There is need to conserve these fruits for future. 展开更多
关键词 Western Ghats indigenous fruits genetic variability conservation.
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An ecological perspective on Joseph Rock’s(1884-1962)plant collection activities in China 被引量:1
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作者 Jifan Luo Ruozhi Huang +7 位作者 Hai Yan Renwu Wu Shuai Liao Zhoubing Xiang Yongxi Zou Liangchen Shi Ke Wang Zhiyi Bao 《Journal of Plant Ecology》 SCIE CSCD 2024年第4期100-113,共14页
In the early 20th century,numerous western botanists,often referred to as‘plant hunters’,embarked on ambitious expeditions to China,playing a crucial role in the study of botany and botanical diversity.Despite their... In the early 20th century,numerous western botanists,often referred to as‘plant hunters’,embarked on ambitious expeditions to China,playing a crucial role in the study of botany and botanical diversity.Despite their contributions,comprehensive assessments of their explorations are lacking.To bridge this gap,this article focuses on the work of Joseph Charles Francis Rock,a notable figure in that era.Our work revisits Rock’s botanical expeditions within the broader context of botanical diversity conservation.It outlines his historical experiences in collecting plants in China and enumerates the species composition and phenotypic traits of the plants he collected.Additionally,it also analyzes the spatial distribution of the species,the completeness of his collection and the α-and β-diversity of the plants he collected.Our findings reveal that Rock led four major botanical expeditions in China between 1922 and 1933,amassing a total of 28184 sheets and 16608 numbers across 204 families,1081 genera and 4231 species.His focus was predominantly on ornamental species,which exhibit a variety of flower colors and inflorescences.His collection work spanned 5 provinces,35 cities and 72 counties,with a notable concentration in the Hengduan Mountains,a current biodiversity hotspot.This study not only reconstructs Rock’s botanical legacy but also offers valuable historical data and fresh analytical insights for understanding contemporary plant diversity.It contributes to the ongoing discourse on the importance of preserving plant diversity as a cornerstone of environmental sustainability. 展开更多
关键词 Joseph Charles Francis Rock plant specimen collection history plant diversity plant collector
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