Results 31 to 40 of about 2,181,695 (164)

Spatiotemporal Pattern Evolution and Driving Mechanisms of World Botanical Gardens Over Five Centuries

open access: yesIntegrative Conservation, Volume 5, Issue 3, Page 255-267, September 2026.
This study presents a comprehensive review of the 500‐year spatiotemporal evolution of global botanical gardens, identifying three major development stages—initial exploration (1543–1699), steady expansion (1700–1899), and rapid proliferation (1900–2020)—with six distinct sub‐stages. We propose a tripartite driving framework grounded in colonial botany
Shidong Li, Guangzhen Shi, Qingwei Li
wiley   +1 more source

Spatial Patterns of Seed Plants and Their Conservation Priorities in Jiangxi Province, China 中国江西省种子植物的空间格局及其保护优先区

open access: yesIntegrative Conservation, Volume 5, Issue 3, Page 281-292, September 2026.
We comprehensively evaluated the seed plant diversity of Jiangxi province to address the regional biodiversity conservation of Asian subtropical evergreen broad‐leaved forests (EBLFs). Higher species diversity of seed plants was observed in eastern, southern, and western Jiangxi, with elevation and precipitation as mainly environmental factors.
Minqin Duan   +8 more
wiley   +1 more source

岷江上游地区种子植物区系初步研究

open access: yes四川大学学报. 自然科学版, 2008
岷江上游地区位于四川北部,是世界生物多样性保护的热点地区.区系分析结果显示保护区内有种子植物107科,444属,1091种,其中裸子植物6科,11属,42种;被子植物101科,433属,1049种.种子植物科的分布区类型有12个,具有较强的热带性质,泛热带(热带广布Pantropic)型29科,占总科数的40.28%,属的分布区类型有15个,以温带区系成分为主,共225属,占总属数的56.53%,种的分布区类型有15个,其中特有种501个,占总种数的50.81%.该地区区系成分较复杂,特有成分较多 ...
孙钠, 何兴金, 周颂东
doaj  

A study on the absorption of cadmium and zinc in the water sediments with submerged plants(沉水植物对受重金属镉、锌污染的水体底泥的修复效果)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2016
为了探究常见沉水植物对水体底泥中重金属污染的富集效果,选取浙江水域较为常见的3种沉水植物苦草(Vallisneria natans (Lour.) Hara)、黑藻(Hydrilla verticillata (Linn. f.) Royle)、金鱼藻(Ceratophyllum demersum L.),在模拟天然水体环境中,将3种沉水植物培养在含有重金属Cd、Zn的底泥中生长一个生活周期.依据沉水植物对重金属Cd、Zn的富集量和生物-沉积物生物富集因子(biota-sediment ...
QIAOYunlei(乔云蕾)   +4 more
doaj   +1 more source

Tracing change in the public perception of plants: insights from archives and social media in China

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 5, Page 1853-1871, September 2026.
As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu   +4 more
wiley   +1 more source

生物结皮对5种不同形态的荒漠植物种子萌发的影响

open access: yes, 2009
生物结皮广泛分布于干旱、半干旱区,强烈影响着土壤表层理化特性,进而对种子散布、萌发和定居产生影响。目前关于生物结皮与植物种子萌发关系的研究结论存在争议。该文通过室内人工控制实验,研究了生物结皮对古尔班通古特沙漠5种具不同种子形态特征的荒漠植物白梭梭(Haloxylon persicum)、蛇麻黄(Ephedra distachya)、角果藜(Ceratocarpus arenaarius)、涩芥(Malcolmia africana)和狭果鹤虱(Lappula semiglabra)的种子萌发的影响 ...
张元明   +4 more
core  

细胞分裂素调控种子发育、休眠与萌发的研究进展

open access: yes, 2021
种子萌发是子代植株建立、生长和繁育的重要阶段,在种子植物生命周期中起重要作用。种子休眠是在发育过程中形成的,在生理成熟期达到峰值。种子休眠与萌发的植物激素调控可能是种子植物中一种高度保守的机制。细胞分裂素(CK)是植物体内的一种重要信号分子,调控植物生长发育的许多方面。生物活性CK的水平由其生物合成、活化、失活、再活化和降解之间的平衡所调控,种子的发育、休眠与萌发受生物活性CK的水平和信号转导途径调控。该文综述了CK的生物合成与代谢、信号转导以及对种子发育、休眠与萌发的调控作用 ...
张琪   +5 more
core  

Synergistic Effect of Hydrophilic Surface and Nano‐Ag2O in TiO2‐Based Composites Coating on Antibacterial and Osteogenic Properties of Low Modulus Ti‐Mo‐Ag Alloy

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Ti‐15Mo‐2.5Ag alloy exhibited a low modulus and strong antibacterial ability but poor bioactivity. To resolve this problem, sandblasting and anodization were used to create a hydrophilic and nano‐Ag2O‐containing TiO2 coating. Subsequently, the microstructure and physicochemical properties were investigated by scanning electron microscopy, X ...
Yanchun Xie   +11 more
wiley   +1 more source

生物土壤结皮与种子附属物对4种荒漠植物种子萌发的交互影响/Interactive Effects of Biological Soil Crusts and Seed Appendages on Seed Germination of Four Desert Species[J]

open access: yes, 2014
生物土壤结皮能直接或间接地影响维管植物种子萌发与群落建成,种子本身的生物学特征(如种子附属物等)对萌发也存在一定影响.本研究选取古尔班通古特沙漠4种常见的具有不同形态附属物的藜科植物(梭梭(Haloxylon ammodendron)、粗枝猪毛菜(Salsola subcrassa)、心叶驼绒藜(Ceratoides ewersmanniana)和角果藜(Ceratocarpus arenarius))种子,设置苔藓结皮、地衣结皮和裸沙3种土壤基质,通过去除或保留种子附属物 ...
李国栋   +5 more
core  

Plant developmental genetics-a new emerging branch of genetics(植物发育遗传学--一个新兴的遗传学分支)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2002
随着分子生物学和分子遗传学的迅速发展,尤其是各种基因克隆技术的不断完善,从遗传学角度来探索植物发育的分子机理成为现实.在近10年中,已取得了丰硕的成果,并迅速产生了遗传学的又一新兴分支,即植物发育遗传学.植物发育遗传学的研究已成为21世纪生命科学研究中的热点领域.在综述国内外文献的基础上,扼要介绍(1)植物发育遗传学诞生的历史背景;(2)高等植物发育的基本内容及其特点;(3)研究植物发育遗传学的意义及其展望.
PANJian-wei(潘建伟)   +2 more
doaj   +1 more source

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