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基于13项形态学指标的远东黑蜂形态变异分析 被引量:1
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作者 王进州 薛运波 +2 位作者 张发 金水华 李兴安 《农业科学》 2014年第5期87-98,共12页
为了积累远东黑蜂的形态学数据,和以此数据为依据表征远东黑蜂,本研究首先通过显微图像分析方法分别测定了10群远东黑蜂样本和10群欧洲黑蜂样本各自的13项尺度类形态学指标;其次,通过F-分析比较了远东黑蜂样本测定值均数与欧洲黑蜂样本... 为了积累远东黑蜂的形态学数据,和以此数据为依据表征远东黑蜂,本研究首先通过显微图像分析方法分别测定了10群远东黑蜂样本和10群欧洲黑蜂样本各自的13项尺度类形态学指标;其次,通过F-分析比较了远东黑蜂样本测定值均数与欧洲黑蜂样本测定值均数的离散程度,通过t-检验比较了远东黑蜂样本测定值均数与欧洲黑蜂样本测定值均数的差异性。远东黑蜂样本的吻长度、第四蜡镜宽度、第四蜡镜面积测定值均数,都明显地小于欧洲黑蜂样本的相应测定值均数(P 0.05)。这提示,相对于欧洲黑蜂,远东黑蜂具有明显的形态学体征:短的吻长度,短的第四蜡镜宽度和小的第四蜡镜面积。 展开更多
关键词 远东黑蜂 形态变异分析 尺度类形态学指标 第四蜡镜
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急性心肌梗死ST段抬高形态变异分析
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作者 田路 《心脑血管病防治》 2003年第3期38-39,共2页
关键词 急性心肌梗死 ST段抬高 形态变异分析 心电图 诊断 抢救 治疗
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山东沿海不同地理群体菲律宾蛤仔形态变异分析 被引量:4
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作者 邹琰 李莉 +4 位作者 王英俊 吴莹莹 刘童 宋爱环 刘洪军 《水产学杂志》 CAS 北大核心 2021年第3期28-33,共6页
为探讨山东沿海不同地理群体菲律宾蛤仔Ruditapes philippinarum形态变异与地理分化特点,采用形态度量学方法,通过方差分析、主成分分析、聚类分析对山东沿海菲律宾蛤仔的滨州无棣(WD)、烟台八角(BJ)、烟台牟平(MP)、烟台蓬莱(PL)、威... 为探讨山东沿海不同地理群体菲律宾蛤仔Ruditapes philippinarum形态变异与地理分化特点,采用形态度量学方法,通过方差分析、主成分分析、聚类分析对山东沿海菲律宾蛤仔的滨州无棣(WD)、烟台八角(BJ)、烟台牟平(MP)、烟台蓬莱(PL)、威海乳山(RS)、青岛丰城(FC)和青岛七沟(QG)7个野生群体共765个样本进行形态变异分析。结果表明:7个群体形态上存在一定的差异,但仍为种群间差异;主成分分析得到两个主要成分,第一主成分由壳宽/壳长、总重/壳长、壳宽/壳高决定,贡献率为57.36%,第二主成分主要由软体重/壳长决定,贡献率为38.32%,两者的累计贡献率达到了95.67%。乳山群体壳薄,壳型最扁,最肥,经济价值最高;无棣群体的贝壳小,壳厚,肥满度仅次于乳山群体;蓬莱、牟平群体贝壳大,壳薄;青岛八角与丰城群体贝壳小,壳厚,肥满度一般;青岛七沟群体壳最厚,最瘦。聚类分析结果显示7个地理群体形态上的变异与地理距离并不明显相关。 展开更多
关键词 菲律宾蛤仔 地理群体 形态变异分析
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短枝木麻黄在福建东山试点的种源试验结果分析与选择 被引量:15
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作者 叶功富 罗美娟 林金木 《北京林业大学学报》 CAS CSCD 北大核心 2004年第6期6-11,共6页
对设在福建省东山试验点的41个短枝木麻黄种源的11个性状遗传分析表明,种源间在各个生长和形态性状上存在显著或极显著差异,遗传力在039~088之间,表明各性状的差异主要由遗传因素所致,具有较强的选择潜力.遗传相关分析结果表明,除冠幅... 对设在福建省东山试验点的41个短枝木麻黄种源的11个性状遗传分析表明,种源间在各个生长和形态性状上存在显著或极显著差异,遗传力在039~088之间,表明各性状的差异主要由遗传因素所致,具有较强的选择潜力.遗传相关分析结果表明,除冠幅与树高相关性不显著外,其他各生长性状之间的相关性达极显著水平,主干分叉习性与主干通直度间呈极显著相关.以用材林为培育目标,选择材积、胸径、树高为主要指标,同时考虑主干分叉习性、主干通直度等干形性状,从41个种源中筛选出7个优良种源,分别为18014(印度)、18154(菲律宾)、18157(马来西亚)、18153(巴布亚新几内亚)、18296(泰国)、18312(瓦努阿图)和广东湛江种源,这些优良种源的增产作用十分明显. 展开更多
关键词 短枝木麻黄 形态特征 遗传变异 遗传相关分析 种源选择
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我国意大利蜂(Apis mellifera L.)两种生态型的形态学比较
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作者 金水华 张华伟 《中国蜂业》 2019年第1期69-72,共4页
为了表征意大利蜂平湖生态型体征,本研究通过形态学方法分别对180群意大利蜂平湖生态型样本(实验组)和意大利蜂原生态型样本(对照)进行了13项尺度类形态学指标测定以及测定数据离散程度比较和差异性分析。结果发现,实验组的第四蜡镜长... 为了表征意大利蜂平湖生态型体征,本研究通过形态学方法分别对180群意大利蜂平湖生态型样本(实验组)和意大利蜂原生态型样本(对照)进行了13项尺度类形态学指标测定以及测定数据离散程度比较和差异性分析。结果发现,实验组的第四蜡镜长度和第四蜡镜面积测定值均数,均明显大于对照的相应测定值均数(P<0.05);相反,它们之间的吻长度、第三背板宽度、第四背板长度、第四背板宽度、第四蜡镜宽度、前翅长度、前翅宽度、前翅面积、前翅肘脉指数、后腿跗节长度以及后腿跗节宽度测定值均数,均没有差异(P>0.05)。这提示,相对于意大利蜜蜂原生态型,意大利蜂平湖生态型形成了明显的地方体征,即长的第四蜡镜长度和大的第四蜡镜面积。 展开更多
关键词 意大利蜂平湖生态型 形态变异分析 尺度类形态学指标 第四蜡镜
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Comparative Analysis of Morphologic Traits of 50 Large-flowered Chrysanthemum Varieties
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作者 沈珍 毛燕 +2 位作者 吴德智 袁伟 杨旭 《Agricultural Science & Technology》 CAS 2016年第2期317-322,共6页
With 50 large-flowered Chrysanthemum varieties from germplasm nursery of Wunaoshan Forest Farm in Macheng City as research objects, 64 morphological traits were investigated by field experiments adopting randomized bl... With 50 large-flowered Chrysanthemum varieties from germplasm nursery of Wunaoshan Forest Farm in Macheng City as research objects, 64 morphological traits were investigated by field experiments adopting randomized block design. The morphological differences were observed by uniformity analysis, variability analysis, principal component analysis and cluster analysis. The result showed that the vari- able coefficients of 59 traits were greater than 15%; the contribution rate of first seven principal components reached 81.45%; and it was found by clustering analy- sis that the 50 germplasm resources could be divided into four clusters with obvious morphological differences, and plant type could be used as an index for classifica- tion. 展开更多
关键词 Large-flowered Chrysanthemum Morphologic traits Variability analysis Principal component analysis Clustering analysis
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Morphological Variation of Donax spp. from Five Beaches in Prachaupkhirikhan, Thailand
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作者 S. Manatrinon O. U. Thonglor A. Boonyapakdee 《Journal of Agricultural Science and Technology(A)》 2011年第8期1109-1111,共3页
Five hundred samples ofDonax spp. were collected from five beaches (Khao Tao, Sea Pine Garden, Pran Buri Forest Park, Sam Roi Yod, and Sam Phraya) in Prachaupkhirikhan province, Thailand. Five morphological variable... Five hundred samples ofDonax spp. were collected from five beaches (Khao Tao, Sea Pine Garden, Pran Buri Forest Park, Sam Roi Yod, and Sam Phraya) in Prachaupkhirikhan province, Thailand. Five morphological variables of each individual were measured and analyzed to reveal morphological variation. The discriminant function analysis of morphology suggested a clear separation into two groups. The individuals from Khao Tao and Sea Pine Garden were grouped together while individuals from Pran Buri Forest Park, Sam Roi Yod and Sam Phraya were classified into the same group. The classification function of discriminant function analysis suggested that 70% of Khao Tao population, 70% of Sea Pine Garden population, 67% of Pran Buri Forest Park population, 64% of Sam Roi Yod population and 34% of Sam Phraya population of Donax spp. could be correctly reassigned by morphology. The misclassification individuals of Sam Phraya population were assigned to Pran Buri Forest Park and Sam Roi Yod population with the correct assignment 38% and 27%, respectively. The results obtained in this study based on morphological variation indicated that Khao Tao and Sea Pine Garden populations ofDonax spp. should be treated as separated units from the other three populations for conservation management. However, the result should be confirmed again as genetic level. 展开更多
关键词 Morphological variation discriminant function analysis Donax spp. Prachaupkhirikhan
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Morphological Variation of Coilia Mystus (Clupeiformes: Engraulidae) in Three Chinese Estuaries
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作者 Qiqun Cheng 《Journal of Life Sciences》 2010年第6期29-34,共6页
Truss network data were collected and investigated in order to clarify the morphological variation in populations of Coilia mystus from three Chinese estuaries. Nineteen morphometric measurements were made for each in... Truss network data were collected and investigated in order to clarify the morphological variation in populations of Coilia mystus from three Chinese estuaries. Nineteen morphometric measurements were made for each individual, and Burnaby's multivariate method was used to obtain size-adjusted shape data. The cluster analysis and discriminant analysis were used to discriminate morphological differences among populations. The results indicated that 1) the three populations were clustered into two distinct groups: the first group included Changiiang C. mystus and Zhujiang C. mystus, the last one included Minjiang C. mystus, and 2) discriminant analysis with selected 5 morphological parameters showed that the identification accuracy was between 98.7952% and 100%, and global identification accuracy was 99.2933%. Reproductive isolation and adaption to environmental condition are determinant factors for morphological variation between populations of C. mystus. 展开更多
关键词 Coilia mystus cluster analysis discriminant analysis morphological variation stock identification.
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Phenotypic plasticity can explain evolution of sympatric polymorphism in the hairy snail Trochulus hispidus (Linnaeus, 1758) 被引量:2
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作者 Matgorzata PROCKOW Elzbieta KUZNIK-KOWALSKA Pawet MACKIEWICZ 《Current Zoology》 SCIE CAS CSCD 2017年第4期389-402,共14页
Morphological variation of snails from the genus Trochulus is so huge that their taxonomy is unclear. The greatest variability concerns forms hispidus and sericeus/plebeius, which are often considered as separate spec... Morphological variation of snails from the genus Trochulus is so huge that their taxonomy is unclear. The greatest variability concerns forms hispidus and sericeus/plebeius, which are often considered as separate species. To evidence the species barriers, we carried out crossbreeding ex- periments between these two sympatric morphs. Moreover, we compared the shell morphology of laboratory-bred offspring with their wild parents to test if the variation can be explained by the phenotypic plasticity model. We found that the two Trochulus morphs show no reproductive bar- riers. The fecundity rates, the mean clutch size, and F~ viability observed for all crosses were not significantly different. In hybrid crosses (in F2 generation), we also recorded reproduction compati- bility, similar fecundity, and hatching success as in their parents. Accordingly, phylogenetic ana- lyses revealed the significant grouping of sequences from these different morphs and supported no constrains in reproduction between them. Comparison of shell morphology between wild and laboratory samples showed that various characters appeared highly plastic. The average shell shape of the hispidus morph changed significantly from flat with wide umbilicus to elevated with narrower umbilicus such as in the sericeus/plebeius morph. All these findings indicate that the examined morphs do not represent separate biological species and the evolutionary process is not advanced enough to separate their genetic pool. Therefore, phenotypic plasticity has played a sig- nificant role in the evolution of Trochulus shell polymorphism. The two morphs can evolve inde- pendently in separate phylogenetic lineages under the influence of local environmental conditions. 展开更多
关键词 CROSSBREEDING cytochrome c oxidase subunit I molecular phylogeny phenotypic variation principal component analysis shell morphology.
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