Results 121 to 130 of about 24,941 (203)
The power of ionic movements in plants
New Phytologist, Volume 249, Issue 5, Page 2232-2240, March 2026.Summary The movement of ion‐driven electrogenic events known as plant action potentials in the Venus flytrap Dionaea muscipula has first been recognized in Darwin's time. Besides electrophysiological techniques making use of current‐ and voltage‐recording electrodes, today an ever‐growing spectrum of tools has become available, that report online ...
Rainer Hedrich, Ines Kreuzer
wiley +1 more source
Shuitu Baochi Xuebao[目的] 为研究根土复合体破坏全过程的本构关系。[方法] 以不同生长阶段的香根草(20,40,60天)和红壤的原状根土复合体为对象,基于邓肯—张模型,结合三轴试验,构建根土复合体破坏全过程的应力应变本构关系模型,并分析模型参数对根系生物量变化的响应。[结果] (1)邓肯—张本构关系模拟根土复合体力学行为的效果理想,除个别素土的应变软化现象不能捕捉外,应力应变曲线、抗剪强度指标的预测值与实测值均表现出高度的相关性(R2>0.91),并且能够很好地预测曲线在弹性阶段、硬化阶段和塑性阶段的变化特征。(2 ...
吴锐斌, 及金楠, 杨彧哲
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Shuitu Baochi Xuebao, 2018 为研究不同根系布置方式（方形、梅花形、环形）对草本植物根—土复合体抗剪强度影响，引入面积置换率的概念，解决了相同含根量或相同根数时无法同时满足方形、梅花形和环形布置的难题。在此基础上选取中国过渡带北侧山地土壤与莎草科植物开展植物根—土复合体抗剪强度试验研究，分析了相同布置形式下含根量对根—土复合体抗剪强度的影响、根系布置方式（方形、梅花形、环形）对草本植物根—土复合体抗剪强度增强作用以及抗剪强度指标变化规律。结果表明：根—土复合体试样的抗剪强度和黏聚力随着含根量的增大而逐渐增加；根 ...
王保辉, 朱连奇
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New Phytologist, Volume 249, Issue 5, Page 2452-2466, March 2026.Summary Plants orchestrate their developmental processes and responses to environmental stimuli through a sophisticated network of small signaling molecules, termed phytohormones. Among these, auxins are recognized for their role in promoting plant growth.
José Moya‐Cuevas +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2016 在植物生长旺盛期，采用材料试验机测定3～4 a生柠条、沙柳、沙棘、白沙蒿在1～4 mm径级范围内的侧根分支处、相邻上级直根的抗拉力与抗折力，研究4种植物根系易受损的外力类型。结果表明：同径级条件下，柠条和沙柳的侧根分支处、相邻直根均表现为抗拉力小于抗折力，而沙棘和白沙蒿侧根分支处和相邻直根均表现为抗拉力大于抗折力。侧根分支处抗拉强度和抗折强度分别为：柠条(23.70±3.97)＜（33.66±7.74) MPa，沙柳(14.86±1.28)＜（17.31±1.91) MPa，沙棘(10.61±2.40)＞
李有芳 +7 more
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Climate adaptation and functional constraints drive pollen evolution in Apiales
New Phytologist, Volume 249, Issue 5, Page 2574-2587, March 2026.Summary Pollen grains exhibit remarkable morphological diversity, shaped by selective pressures from environmental factors and mechanical constraints. Here, we investigate macroevolutionary patterns of pollen morphology in Apiales, an order of angiosperms with significant ecological and geographical diversity, to disentangle the roles of climate and ...
Jakub Baczyński +3 more
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Transfer cells in Horneophyton lignieri illuminate the origin of vascular tissues in land plants
New Phytologist, Volume 249, Issue 6, Page 3149-3164, March 2026.Summary Recent fossil discoveries and advances in plant phylogeny have renewed debate about the most recent common ancestor (MRCA) of land plants and the evolution of its fundamental organs and tissues. We re‐investigate the vascular system of Horneophyton lignieri, an exceptionally preserved Rhynie Chert fossil central to understanding early plant ...
Paul Kenrick, Emma J. Long
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New Phytologist, Volume 249, Issue 5, Page 2300-2310, March 2026.Summary Establishment growth represents a critical phase in the plant life cycle. In clonal herbs, which depend on developing extensive belowground organs, this stage may be particularly vulnerable due to substantial belowground resource allocation. We hypothesized that such investment constrains tolerance to early disturbance in clonal herbs compared ...
Jana Martínková +2 more
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Shuitu Baochi Xuebao, 1996 利用自制的毛根拉力测定装置，首次对黄土高原１２种常见牧草０．１～１．０ｍｍ毛根生物力学特性进行了系统研究。结果表明，牧草毛根具有强大的抗拉能力。直径为０．１～０．２ｍｍ禾本科根系抗拉力达１．３７Ｎ，豆科０．７７Ｎ，菊科０．６９Ｎ。毛根抗拉力随直径增加而增大，递增率为禾本科＞豆科＞菊科。根龄对抗拉力的影响因种而异，菊科当年新根与老活根抗拉力无明显差异。研究发现豆科沙打旺和禾本科无芒雀麦应力—应变为对数函数关系，应变递增速度快，不符合胡克定律。其余牧草本构方程遵从胡克定律，但其弹性模量因种而异 ...
刘国彬, 蒋定生, 朱显谟
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Cold hardiness mechanisms and modeling: existing approaches and future avenues
New Phytologist, Volume 249, Issue 6, Page 2668-2682, March 2026.Summary Cold hardiness models are useful tools to predict cold damage in plants, such as those produced by unseasonal temperature cycles or by increased cold exposure. Although development of these models started about five decades ago, their applications remain limited.
Guillaume Charrier +3 more
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