S Dayanandan,K Bawa,R Kesseli
S Dayanandan
Although microsatellites or simple sequence repeats (SSRs) have become a popular tool in genetic mapping and gene flow studies, their utility is limited due to paucity of information about DNA sequences in plants. We tested the utility of m...
Analysis of developmental preformation in the alpine herb Caltha leptosepala (Ranunculaceae) [0.03%]
高山植物铜盆草(Ranunculaceae)发育预成型的分析
A Aydelotte,P Diggle
A Aydelotte
Developmental preformation is ubiquitous among alpine and arctic tundra plant species and may cause a delay in plant morphological responses to environmental variation. The duration of preformation and seasonal pattern of development were e...
Anatomy and distribution of foliar idioblasts in Scrophularia and Verbascum (Scrophulariaceae) [0.03%]
玄参属和毛花属叶表皮簇晶的研究及分布学分析
N Lersten,J Curtis
N Lersten
Internal secretory structures have rarely been reported from Scrophulariaceae, and foliar idioblasts only once before, in 1887. Presented here are the first unambiguous descriptions of subepidermal foliar idioblasts in the family, from Scro...
G. Ledyard Stebbins, Jr. and the evolutionary synthesis (1924-1950) [0.03%]
小G·莱达德·斯蒂宾斯与进化综合（1924—1950）
V Smocovitis
V Smocovitis
This is an historical paper examining the scientific background of George Ledyard Stebbins, Jr. (b. 1906), one of the foremost botanists of this century and one of the architects of the evolutionary synthesis, the intellectual event that br...
Parental effects on seed mass: seed coat but not embryo/endosperm effects [0.03%]
种子质量的亲本效应：种皮而非胚乳的影响
E Lacey,S Smith,A Case
E Lacey
Many biologists studying environmentally induced parental effects have indirectly suggested that the parental environment alters seed mass by altering the amount of endosperm or embryo tissue in the seed. We tested this hypothesis by measur...
Carbon exchange between Polysiphonia lanosa (Rhodophyceae) and its brown algal host [0.03%]
Polysiphonia lanosa(红藻门)与其褐藻宿主之间的碳交换
S Ciciotte,R Thomas
S Ciciotte
Polysiphonia lanosa and its preferred Ascophyllum nodosum host exchange 14C-labeled photoassimilates. Exchange was demonstrated by injecting 14C-bicarbonate into air bladders on 15-30 cm cultured sections of field-collected host blades. Eac...
Molecular evidence for a Mediterranean origin of the Macaronesian endemic genus Argyranthemum (Asteraceae) [0.03%]
分子证据表明地中海是天南星属（菊科）在麦哲伦群岛上的特有植物的起源地
J Francisco-Ortega,A Santos-Guerra,A Hines et al.
J Francisco-Ortega et al.
The internal transcribed spacers (ITS) of nuclear ribosomal DNA were sequenced for 52 species from 32 genera and eight subtribes of Anthemideae. Phylogenetic analyses of ITS data generated trees that are largely incongruent with the recent ...
Male sterility, protogyny, and pollen-pistil interference in Plantago maritima (Plantaginaceae), a wind-pollinated, self-incompatible perennial [0.03%]
植物AGO科佩尼木的雄性不育，雌雄异熟及风媒传粉的自相干扰研究
P Dinnetz
P Dinnetz
Evolution and maintenance of male sterility in seed plants can be explained by the maternal inheritance of mitochondria, which encode the trait, and by adaptive functions that enhance female fecundity in male-sterile compared to hermaphrodi...
Pedilanthus diazlunanus (Euphorbiaceae): pollination by hymenopterans in a bird-pollinated genus [0.03%]
羽状独尾草（大戟科）的传粉：一种以鸟传粉为主的属中的膜翅目昆虫传粉事件
E Sahagun-Godinez,J Lomeli-Sencion
E Sahagun-Godinez
Pollination in the genus Pedilanthus is commonly effected by hummingbirds. Pollination by vespid wasps in Pedilanthus is documented for the first time based on observations of Pachodynerus nasidens and Eumenes americanus pollinating Pedilan...
Stomatal density responses of temperate woodland plants over the past seven decades of CO2 increase: a comparison of Salisbury (1927) with contemporary data [0.03%]
近七十年来二氧化碳浓度升高对温带林地植物气孔密度的响应：萨里士比(1927)与当代数据的比较研究
D Beerling,C Kelly
D Beerling
We investigated the possible effect of recent (1927-1995) increases in the concentration of atmospheric CO2 on the stomatal densities of leaves of a wide range of tree, shrub, and herb species (N = 60) by making new measurements for compari...