Susana M Wadgymar,Seema Sheth,Emily Josephs et al.
Susana M Wadgymar et al.
An understanding of biological fitness is central to theory and practice in ecology and evolution, yet fitness remains an elusive concept to define and challenging to measure accurately. Fitness reflects an individual's ability to pass its ...
A new way to integrate selection when both demography and selection gradients vary over time [0.03%]
当人口统计和选择梯度随时间变化时整合选择的新方法
Carol C Horvitz,Tim Coulson,Shripad Tuljapurkar et al.
Carol C Horvitz et al.
When both selection and demography vary over time, how can the long-run expected strength of selection on quantitative traits be measured? There are two basic steps in the proposed new analysis: one relates trait values to fitness component...
USING POPULATION GENOMICS TO DETECT SELECTION IN NATURAL POPULATIONS: KEY CONCEPTS AND METHODOLOGICAL CONSIDERATIONS [0.03%]
利用群体基因组学检测自然种群选择的理论和实践挑战
Paul A Hohenlohe,Patrick C Phillips,William A Cresko
Paul A Hohenlohe
Natural selection shapes patterns of genetic variation among individuals, populations, and species, and it does so differentially across genomes. The field of population genomics provides a comprehensive genome-scale view of the action of s...
SOURCES OF THE ARCTIC FLORA: ORIGINS OF ARCTIC SPECIES IN RANUNCULUS AND RELATED GENERA [0.03%]
北极植物的来源——风花雪月和相关属中的北极物种起源
Matthias H Hoffmann,K Bernhard von Hagen,Elvira Hörandl et al.
Matthias H Hoffmann et al.
The arctic biome is a relatively young ecosystem with ~2300 species of vascular plants. We studied the genus Ranunculus as an example of the origin and evolution of the arctic flora. For this purpose we used molecular phylogenetic and clock...
EVOLUTIONARY IMPLICATIONS OF SELF-COMPATIBILITY AND REPRODUCTIVE FITNESS IN THE APOMICTIC RANUNCULUS AURICOMUS POLYPLOID COMPLEX (RANUNCULACEAE) [0.03%]
自交亲和性对有胞生殖毛茛属金蕊组（毛茛科）的进化意义及繁殖适合度的影响
Elvira Hörandl
Elvira Hörandl
Uniparental reproduction has often been regarded as advantageous for colonization. In pseudogamous a pomicts, reproduction via single individuals requires self-pollination and consequently self-compatibility (SC) for production of viable se...
Dynamics of storage reserve deposition during Brassica rapa L. pollen and seed development in microgravity [0.03%]
微重力条件下芸苔属拟南芥型油料作物花粉和种子发育过程中贮藏物质的积累动态研究
A Kuang,A Popova,G McClure et al.
A Kuang et al.
Pollen and seeds share a developmental sequence characterized by intense metabolic activity during reserve deposition before drying to a cryptobiotic form. Neither pollen nor seed development has been well studied in the absence of gravity,...
The plasma membrane-associated NADH oxidase of spinach leaves responds to blue light [0.03%]
蓝光诱导菠菜叶质膜NADH氧化酶活性下降
D James Morre,Claude Penel,Hubert Greppin et al.
D James Morre et al.
The plasma membrane-associated NADH oxidase (NOX) of spinach leaf disks is characterized by oscillations in activity with a regular period length of ca. 24 min. Within a single population of plants exposed to light at the same time, NOX act...
Comparative Study
International journal of plant sciences. 2002 Jul;163(4):543-7. DOI:10.1086/340543 2002
Evidence of root zone hypoxia in Brassica rapa L. grown in microgravity [0.03%]
微重力条件下种植的芸苔属植物根区低氧胁迫的证据
S C Stout,D M Porterfield,L G Briarty et al.
S C Stout et al.
A series of experiments was conducted aboard the U.S. space shuttle and the Mir space station to evaluate microgravity-induced root zone hypoxia in rapid-cycling Brassica (Brassica rapa L.), using both root and foliar indicators of low-oxyg...
Stereological analysis of gravitropism in protonemata of the moss Ceratodon [0.03%]
模式地钱孢子体 protonema 培养的向地性立体分析研究
L M Walker,F D Sack
L M Walker
Apical cells of dark-grown protonemata of the moss Cerotodon purpureus are negatively gravitropic. Previous light microscopy has shown that reorientation to the horizontal induces amyloplast sedimentation and redistribution of microtubules....
Gravitropism of inflorescence stems in starch-deficient mutants of Arabidopsis [0.03%]
淀粉缺乏突变体中拟南芥花序茎的向地性生长
S E Weise,J Z Kiss
S E Weise
Previous studies have assayed the gravitropic response of roots and hypocotyls of wild type Arabidopsis thaliana, two reduced-starch strains, and a starchless strain. Because there have been few reports on inflorescence gravitropism, in thi...
Comparative Study
International journal of plant sciences. 1999;160(3):521-7. DOI:10.1086/314142 1999