Seed output and the seed bank in Vallisneria americana (Hydrocharitaceae) [0.03%]
北美苦草（ Hydrocharitaceae）的种子萌发及休眠机制研究
C Lokker,L Lovett-Doust,J Lovett-Doust
C Lokker
Seed banks and sexual reproduction are known to be significant in colonization and re-establishment of some aquatic macrophyte communities. For highly clonal aquatic macrophytes, however, there is a lack of information on seed production an...
Phylogenetic analyses of "higher" Hamamelididae based on plastid sequence data [0.03%]
基于质体序列数据的“高等”HAMAMELIDAE系统发育分析
P Manos,K Steele
P Manos
Phylogenetic relationships were examined within the "higher" Hamamelididae using 21 species representing eight families and related outgroups. Chloroplast DNA sequences encoding the matK gene (/1 kilobase) provided 258 informative nucleotid...
Cryptic self-incompatibility in tristylous Decodon verticillatus (Lythraceae) [0.03%]
毛菍三式同交异株的隐秘自不亲和性机制研究（十字花科）
C Eckert,M Allen
C Eckert
There is growing evidence that many self-compatible plants control the level of self-fertilization with postpollination processes that give a siring advantage to cross pollen over self pollen through "cryptic self-incompatibility" (CSI). Pr...
Variation in pollinator abundance and selection on fragrance phenotypes in an epiphytic orchid [0.03%]
附生兰传粉者数量的变化及其对香味表型选择的影响
J Ackerman,E Melendez-Ackerman,J Salguero-Faria
J Ackerman
Extraordinary floral variation is common among some orchids that employ deception to attract pollinators. This variation may be maintained by frequency-dependent selection where rare phenotypes are preferred. Over a 2-yr period, 1993-1994, ...
Allozyme diversity in Pinus virginiana (Pinaceae): intraspecific and interspecific comparisons [0.03%]
弗吉尼亚松(Pinaceae)的酶多态性多样性：种内和种间的比较
K Parker,J Hamrick,A Parker et al.
K Parker et al.
Two of the four members of subsection Contortae of the genus Pinus occur in the southeastern United States: Pinus virginiana, which ranges throughout the southern and central Appalachian Mountains, and P. clausa, which is restricted to Flor...
Gene flow among small populations of a self-incompatible plant: an interaction between demography and genetics [0.03%]
一个自交不亲和植物种群间基因流动：人口统计学与遗传学的相互作用
K Goodell,D Elam,J Nason et al.
K Goodell et al.
We assessed the effects of population size and genetic relatedness on rates of pollen gene flow into experimental populations of the insect-pollinated, self-incompatible plant Raphanus sativus. We created synthetic populations of sizes 2, 5...
Anatomy and ultrastructure of the sporophyte of Takakia ceratophylla (Bryophyta) [0.03%]
Takakia ceratophylla (苔类植物)孢子体的解剖与超微结构
K Renzaglia,K McFarland,D Smith
K Renzaglia
In this study, morphogenesis and structure of the sporophyte of Takakia ceratophylla are characterized beginning with the late embryo and culminating in the fully dehisced capsule. Information is presented on the development, ultrastructure...
Roles of the af and tl genes in pea leaf morphogenesis: characterization of the double mutant (afaftltl) [0.03%]
豌豆叶片形态发生的af和tl基因的作用：afaftltl双突变体的表型分析
P Villani,D Demason
P Villani
The pleiofila phenotype (afaftltl double mutant) of Pisum sativum arises from two single-gene, recessive mutations known to affect the identity of leaf pinnae, afila (af), and acacia (tl). The wild-type leaf consists of proximal leaflets an...
Developmental analysis of teosinte glume architecture1: A key locus in the evolution of maize (Poaceae) [0.03%]
玉蜀黍族果皮结构的发育分析1——关于玉米进化中的一个关键基因位点（禾本科）
J Dorweiler,J Doebley
J Dorweiler
A key event in the evolution of maize from teosinte was a reduction in the cupulate fruitcase and softening of the glumes, which increased the accessibility of kernels for harvest. The teosinte glume architecture1 (tga1) locus largely contr...
A chloroplast DNA phylogeny of lilacs (Syringa, Oleaceae): plastome groups show a strong correlation with crossing groups [0.03%]
利用叶绿体基因组构建木犀属植物的系统发育关系：叶绿体基因组与传统血缘型存在强相关性
K J Kim,R K Jansen
K J Kim
Phylogenetic relationships and genomic compatibility were compared for 60 accessions of Syringa using chloroplast DNA (cpDNA) and nuclear ribosomal DNA (rDNA) markers. A total of 669 cpDNA variants, 653 of which were potentially phylogeneti...