نتایج جستجو برای: upgma

تعداد نتایج: 1892  

2000
T. Hsiang X. L. Ma L. Yang S. Cook

UPGMA analysis, principal component analysis, genetic diversity analysis and genetic distance analysis of RAPD data were used to assess the extent of host specialization in 50 isolates of S. homoeocarpa from five turfgrass hosts. In UPGMA analysis and principal component analysis, the occurrence of host specialization was not readily apparent based on visual inspection. Genetic diversity analys...

2004
Sreesa Akella James P. Davis

There is great interest in the use of custom computing machines (CCMs) to accelerate the performance of existing, highly optimized software algorithms in Bioinformatics. But, like many applications for CCMs in the sciences, there are many architecture and experimentation “data points” to be obtained before a solid understanding can be obtained as to the issues of migrating specialized scientifi...

Journal: :Inf. Process. Lett. 2007
Ilan Gronau Shlomo Moran

In this work we consider hierarchical clustering algorithms, such as UPGMA, which follow the closest-pair joining scheme. We survey optimal O(n)-time implementations of such algorithms which use a ‘locally closest’ joining scheme, and specify conditions under which this relaxed joining scheme is equivalent to the original one (i.e. ‘globally closest’).

2011
M. Ozdemir O. C. Bilgin

This study was conducted to estimate genetic distances among Akkaraman, Morkaraman, Awassi, Merino, Karakul, Kivircik, Imroz, Daglic and Karayaka sheep breeds reared in Turkey based on simple polymorphic blood protein types by using various methods including horizontal strach gel electrophoresis and polyacrilamyde gel electrophoresis (PAGE). NJ and UPGMA trees were constructed based on genetic ...

2014
Samaneh Ansari Alireza Shayestehfar Seyed Mehdi Talebi

Brachionus is an suitable live foods for fishes larve of Brachionidae family, in the present study inter and interapopulation variations of two species of family Brachionidae were investigated. For this purpose 90 individuals of geographical populations of these species were collected from different parts of Arak country and for each habitat five ecological factors were examined. Totally eleven...

ژورنال: :به نژادی گیاهان زراعی و باغی 2014
بیتا خوانساری نژاد محمدرضا حسندخت وحیده ناظری

در این پژوهش، تنوع ژنتیکی 25 ژنوتیپ زعفران ایرانی از سه گونۀ زعفران (crocus speciosus، crocus cancellathus وcrocus sativus) با استفاده از 16 صفت مورفولوژی و نشانگر rapd ارزیابی شد. در صفات تعداد برگ در بوته، طول گلبرگ، وزن گل، ارتفاع ساقۀ گل‏دهنده و طول کلاله، گونۀ زعفران زراعی (c. sativus) با گونۀ speciosus متفاوت بود، ولی با گونۀ cancellatus تفاوت معناداری نداشت. از نظر صفات تعداد پوشش بیرونی...

2010
Ram K. Singh Virendra S. Bhatia K. V. Bhat Trilochan Mohapatra Nagendra K. Singh Kailash C. Bansal K. R. Koundal

Forty-four soybean genotypes with different photoperiod response were selected after screening of 1000 soybean accessions under artificial condition and were profiled using 40 SSR and 5 AFLP primer pairs. The average polymorphism information content (PIC) for SSR and AFLP marker systems was 0.507 and 0.120, respectively. Clustering of genotypes was done using UPGMA method for SSR and AFLP and c...

2008
J. Y. Li H. Chen

The genetic diversity was studied using microsatellite DNA markers in Laoshan dairy goat (LS), Xinong Saanen dairy goat (SN), Guanzhong dairy goat (GZ), Banjiao goat (BJ) and Guizhou white goat (GW). Within the nine polymorphic loci, allele frequencies, number of effective alleles (Ne), heterozygosity (He), polymorphism information content (PIC), genetic identity (I) and Nei’s standard genetic ...

2006

Supplementary Figure 1. Alternative analysis of cluster centroid juxtaposition with MEGA2 software. A: UPGMA tree based on Euclidean distance between cluster centroids; B: Neighbor-joining tree based on inter-centroid distance matrix; C: UPGMA tree based on average Euclidean distance between cluster elements; D: Neighbor-joining tree based on average Euclidean distance between cluster elements....

Journal: :Genetics and molecular research : GMR 2015
J Yu Y Wang M Ru L Peng Z S Liang

Eucommia ulmoides Oliver, the only extant species of Eucommiaceae, is a second-category state-protected endangered plant in China. Evaluation of genetic diversity among some intraspecific hybrid populations of E. ulmoides Oliver is vital for breeding programs and further conservation of this rare species. We studied the genetic diversity of 130 accessions from 13 E. ulmoides intraspecific hybri...

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