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辽宁省彰武县和盘山县野生大豆形态学、群落特征及生境之间关系 被引量:1
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作者 曹赫 李建东 +3 位作者 王国骄 孙备 董思言 徐亮 《大豆科学》 CAS CSCD 北大核心 2008年第3期428-432,共5页
从20世纪70年代末开展野生大豆考察收集工作以来,我国科研工作者对野生大豆从农艺学、生态学、品质化学、生理生化、植保、遗传育种、孢粉学、种群生态学、结构植物学和分子生物学等学科对其进行了全面系统的研究,但有关群落方面的研究... 从20世纪70年代末开展野生大豆考察收集工作以来,我国科研工作者对野生大豆从农艺学、生态学、品质化学、生理生化、植保、遗传育种、孢粉学、种群生态学、结构植物学和分子生物学等学科对其进行了全面系统的研究,但有关群落方面的研究却未见报道。为探究野生大豆在形态指标、群落学特征及生境之间的相互关系,对辽宁省彰武县北沟水库地区和盘山县陆家乡地区野生大豆的形态特征、生态环境、伴生物种、干扰情况和濒危状况进行了系统的调查,并采用植物群落学的分析方法进行对比分析。结果显示:植株较高、形态指标优越、生活力较强的野生大豆所处的植物群落物种丰富度大、多样性指数高,土壤含水量和含氮量均较高、群落微气候条件也较优越;植株较矮、生活力弱有的野生大豆则相反。根据研究结果并结合实际情况,对当地野生大豆存在植物群落的生态环境提出保护建议。 展开更多
关键词 野生大豆 生境 群落特征
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Studies on Vegetative and Reproductive Ecology of Paris polyphylla Smith: A Vulnerable Medicinal Plant 被引量:2
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作者 Chitta Ranjan Deb Sakutemsu L. Jamir Nangshimeren Sakutemsu Jamir 《American Journal of Plant Sciences》 2015年第16期2561-2568,共8页
Paris polyphylla Smith is an important medicinal plant that is considered vulnerable in many parts of the world. The species exhibits poor adaptability to changed environment and susceptible to climatic conditions for... Paris polyphylla Smith is an important medicinal plant that is considered vulnerable in many parts of the world. The species exhibits poor adaptability to changed environment and susceptible to climatic conditions for reproductive vigor. During the present study the species was studied in four different natural niches as well as synthetic habitats to check the adaptability to artificial conditions, its morphological and physiological characters and its interaction in its community so that conservation strategies could be worked out. The present study indicates that P. polyphylla exhibits healthy growth as well as reproduction in undisturbed area with canopy covers over 80%. The plant grows in well-drained rich humus soil and grows well with certain key associated species such as Quercus species, Taxus baccata, Aconitum species, Eupatorium adenophorum, Smilax species etc. Many plants were non-flowering and more than 60% were found non-flowering in its habitat during its flowering season in any particular year. There are clear morphological changes as the flowers stages from pre-fertilization to post-fertilization. Arrangement of anthers in two whorls shows a distinct and unique floral display. Light is an important factor during seed setting and less than 50% shade lowers the seed productivity very significantly. Predators such as slugs and snails are found on the plant. Urgent conservation and new innovative ways are necessary to propagate this economically important plant to ensure its continuity. 展开更多
关键词 Associated Species FLORAL BIOLOGY NICHE characterization Primary habitat Reproductive BIOLOGY
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