查询词典 Fagaceae

Cladistic analysis of morphologic characters A neighbor-joining tree of 71 Fagaceae species based on 75 leaf cuticle, architecture, fruit and cupule characters was constructed.

在总结前人对壳斗科叶结构和叶表皮研究和本研究结果基础上列出了属的检索表和70种的检索表。

Based on field collection, observation, Ethnobotany survey, herbarium specimens and literature checking, authors recorded the current utility status of Fagaceae plant resources (the abundance, distribution and the utility) in Guangxi Zhuangzu Autonomous Region of Southwest China.

摘要在较全面野外考察、调研的基础上，结合资料查询、查阅，对广西壳斗科植物的发掘和利用进行了初步探索研究。

51 Orchidaceous species discovered by way of investigation fall into 32 genuses with 41 sedentary plants, 7 adnascent plants and 3 saprophyte plants. Sedentary plants distribute in the communities are composed of panacea, fagaceae, rosaceae, ericaceae plants with life form geophytes.

在调查中出现的32属51种兰科植物中有41种地生兰、7种附生兰和3种腐生兰，地生兰中以兰属植物中的春兰、蕙兰分布最广，生长在松科、山毛榉科、蔷薇科、杜鹃科等构成的植物群落中，生活型为真地下芽植物。

Fagaceae ; dominant species ; Correspondence Analysis ; Canonical Correspondence Analysis ; phytogeography

壳斗科；优势种；对应分析；典范对应分析；植物地理

A group of chiefly woody plants considered among the most primitive of angiosperms; perianth poorly developed or lacking; flowers often unisexual and often in catkins and often wind pollinated; contains 23 families including the Betulaceae and Fagaceae; sometimes classified as a superorder.

主要是木本植物的一个集合，被视为最原始的木本植物之一；没有花被，或花被发育的较差；其花通常是雌雄同体，为荑花序，通常通过风来受精。

The dominant families or the characteristic families are Theaceae, Aquifoliaceae, Fagaceae, Caprufoliaceae、Lauraceae、Vutaceae、Compositae、Myrsinaceae、Araliaceae、Euphorbiaceae、Eriaceae、Moraceae、Rubiaceae, and most of them are of tropical-subtropical distribution.

本区系的优势科或表征科是山茶科、冬青科、壳斗科、忍冬科、樟科、葡萄科、菊科、紫金牛科、桑科、五加科、大戟科、杜鹃花科、桑科、茜草科，绝大多数是热带亚热带分布的。

In the strict consensus tree of the 484 trees, the monophyly of Betulaceae and Fagaceae is strongly supported.

胡桃科和桦木科的单系性都得到了分辨，虽然BS支持率不高。

All of the most parsimonious trees obtained based on the analyses of these combined data sets recognized three major clades in Fagales:(1)Nothofagus,(2) Fagaceae, and (3) core "higher" hamamelids represented by Casuarinaceae, Ticodendraceae, Betulaceae, Myricaceae, Juglandaceae, and Rhoipteleaceae.

主要结论是壳斗目的八个科分为三支，南青冈科是最基部的分支，壳斗科做为核心高等金缕梅类的姐妹群第二个分出，核心高等金缕梅类聚在一起，并进一步分为两个亚支：第一亚支包括桦木科、核果桦科和木麻黄科；另一亚支则由胡桃科、马尾树科和杨梅科组成，杨梅科是胡桃科和马尾树科的姐妹群。

Results of sampling showed that the typical evergreen broad-leaved forest of Mt. Jiulianshan consisted mainly of subtropical families and genera with dominant families including Fagaceae, Lauraceae, Camelliaceae, Styracaceae, Ericaceae, and Magnoliaceae.

群落主要由热带、亚热带科属组成，优势科为壳斗科Fagaceae，樟科Lauraceae，山茶科Camelliaceae，安息香科Styracaceae，杜鹃花科Ericaceae和木兰科Magnoliaceae等科，优势树种以相应的优势科属树种为主。

The earliest and reliable Castanopsis fossil records date back at least to Eocene, and subfamily Castaneoideae fossil records found from Paleocene, it is indicated that appearance of Castanopsis is not later than Paleocene . All fossil records of Fagaceae and Castanopsis report from the Northern Hemisphere and their main distribution regions are in the Northern Hemisphere . It can be concluded that the Northern Hemisphere is the center of origin of Fagaceae and Castanopsis . However, owing to the discrepancy between fossil data and results of modern botany research as well as scarcity of fossil data from key area, precise center of origin of Castanopsis cannot be inferred.

栲属在地质历史上有着比现在广泛的分布，最早、最可靠的栲属化石记录发现于始新世地层，栗亚科化石在古新世就有发现，化石记录表明栲属起源的时间不晚于古新世，所有的壳斗科及栲属的化石都发现于北半球，现代分布也主要在北半球，壳斗科及栲属起源于北半球可以确认，由于化石证据与现代植物学的研究结果有较大差异以及关键地区化石证据的不足，具体的起源地尚不能肯定。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。