Results 21 to 30 of about 2,181,695 (164)
, 2016 种子大小是植物的一个重要品质性状,也是影响作物产量的一个关键因素。近年来,研究人员在种子大小调控机制方面取得了很多重要的研究进展,鉴定了许多调控种子大小的基因。对调控种子大小机制的研究可为作物育种提供重要的理论依据,也可利用调控种子大小的基因实现作物的增产。本文主要以模式植物拟南芥和水稻为例,从泛素、转录因子和激素等方面入手,综述了各类因子调控种子大小的分子机理 ...
庞永珍, 江文波, 张雪晶
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四川大学学报. 自然科学版, 1996 对黑竹沟植物进行了初步考察表明：该区产维管束植物１１６科３５２属约１１００种．其中蕨类植物１６科２２属约６０种；裸子植物５科９属９种；被子植物９５科３２１属约１０００种．其区系成分主要以北温带分布和东亚分布为主 ...
何明友 +5 more
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Newly recorded species of the genus Rubus (Rosaceae) in Sichuan(四川蔷薇科悬钩子属植物新记录)
Zhejiang Daxue xuebao. Lixue ban∶蔷薇科Rosaceae悬钩子属Rubus是一类重要的资源植物，可食用、药用及作为观赏植物等。在整理和鉴定相关标本过程中，发现川产悬钩子属植物分布新记录2种2变种，为小果秀丽莓R. amabilis var. microcarpus、三叶悬钩子R. delavayi、刺萼红花悬钩子R. inopertus var. echinocalyx和锈毛莓R. reflexus。将浅裂锈毛莓R. reflexus var. hui归并至锈毛莓R. reflexus var.
刘超(LIU Chao) +1 more
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Modeling seed germination data to meet biodiversity conservation needs in the Mediterranean
Conservation Biology, Volume 40, Issue 5, October 2026.Workflow to assess the availability and quality of germination data and assign species' thermal risk in the Mediterranean. (a) Assessment of data availability, including the phylogenetic distribution of the number of records (i.e. available germination data); (b) data quality assessment; and (c) assignment of climate risk categories for species that ...
Diana María Cruz‐Tejada +2 more
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四川大学学报. 自然科学版, 2006 根据野外调查资料和历史文献资料,初步分析龙滴水自然保护区有种子植物116科,499属,1181种,其中裸子植物6科,14属,36种;被子植物110科,485属,1145种.种子植物科的区系成分有12个类型,以热带广布成分为主,达35科,占总科数的43.75%;属的区系成分有15个类型,以北温带分布为主,有150属,占总属数的32.89%;中国特有分布属共19属,占总属数的4.17%.
周颂东, 王强, 何兴金, 岳碧松
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Predictive evolutionary genomics: principles, validation, and practice
New Phytologist, Volume 252, Issue 1, Page 36-48, October 2026.Summary Climate change and habitat loss are driving rapid evolutionary responses in populations world‐wide, which creates an urgent need for evolutionary forecasting in conservation and agriculture. Such forecasting can be categorized into three time scales: trait‐based models that use multivariate quantitative genetic equations to project correlated ...
Daniel Ortiz‐Barrientos +5 more
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Shuitu Baochi Xuebao, 2003 在短花针茅荒漠草原,对比研究了不同放牧制度群落植物重要值和多样性,研究结果表明:划区轮牧和对照区重要值较高的植物为短花针茅、无芒隐子草、碱韭和糙隐子草,自由放牧区1年生植物重要值较高;2002年Shannon-Wiener、Simpson和Pielou群落多样性指数自由放牧区偏高于轮牧区,但从3种指数的影响因子重要值的分布上看,轮牧区主要分布在建群种和优势种上,自由放牧区分布在建群种、伴生种和1年生植物上,可以认为轮牧条件下群落环境更稳定.
卫智军, 杨静, 杨尚明
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Neutral interactions among non‐native plants are common
New Phytologist, Volume 252, Issue 1, Page 292-309, October 2026.Global distribution of studies and overall effect of co‐invasion for all metrics of non‐native plant performance combined. Summary Globalization has accelerated the establishment of non‐native plant species, increasing the prevalence of multispecies co‐invasions; yet interactions among co‐invaders remain poorly understood.
Feng He +7 more
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Integrative Conservation, Volume 5, Issue 3, Page 293-305, September 2026.Through systematic price collection and correction for underreporting and undetected seizures, the global illegal wildlife trade (IWT) is estimated at US$28.4–39.5 billion per year. This finding highlights that previous valuations were underestimates.
Jia Hao Tow, L. Roman Carrasco
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丫蕊花(Ypsilandra thibetica Fr)营养器官形态解剖及气孔复合体发育的初步观察
四川大学学报. 自然科学版, 1983 前言百合科植物种类繁多,分布极广,由于适应各种不同的环境而形成了多种多样的营养体结构.百合科是单子叶植物中一个变化大的科,较难追究各类群之间的亲缘关系.但是,百合科植物在单子叶植物的系统发育中占有极重要的地位.根据哈钦森、恩格勒及Cronquist分类系统,均认为它们是单子叶植物在演化上的中心环节.Cheadle等曾在《单子叶植物维管束类型及后生木质部组成分子描述》一文中提出导管起源于管胞的论点;“导管首先发生在根中,然后逐渐地自下而上地发展,出现在植物体的其它部分,直到花葶、叶中出现导管 ...
郑学经 +4 more
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