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| Tsivelikas,Athanasios L.; Koutita,Olga; Anastasiadou,Anastasia; Skaracis,George N.; Traka-Mavrona,Ekaterini; Koutsika-Sotiriou,Metaxia. |
| In this work, the part of the squash core collection, maintained in the Greek Gene Bank, was assessed using the morphological and molecular data. Sixteen incompletely classified accessions of the squash were characterized along with an evaluation of their resistance against two isolates of Fusarium oxysporum. A molecular analysis using Random Amplified Polymorphic DNA (RAPD) markers was also performed, revealing high level of polymorphism. To study the genetic diversity among the squash accessions, a clustering procedure using Unweighed Pair Group Method and Arithmetic Average (UPGMA) algorithm was also adopted. Two independent dendrograms, one for the morphophysiological and one for molecular data were obtained, classifying the accessions into two and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cluster analysis; Gower's distance; Morphophysiological characteristics; Principal Component Analysis; RAPD markers; Winter squash. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200003 |
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| Liu, Fei-yue; Wang, Shao-kai. |
| According to the ecological safety evaluation index data of land-use change in Ji’an City from 1999 to 2008, positive treatment on selected reverse indices is conducted by Reciprocal Method. Meanwhile, Index Method is used to standardize the selected indices, and Principal Component Analysis is applied by using year as a unit. FB is obtained, which is related with the ecological safety of land-use change from 1999 to 2008. According to the scientific, integrative, hierarchical, practical and dynamic principles, ecological safety evaluation index system of land-use change in Ji’an City is established. Principal Component Analysis and evaluation model are used to calculate four parameters, including the natural resources safety index of the land use, the... |
| Tipo: Journal Article |
Palavras-chave: Land use; Ecological safety; Principal Component Analysis; Evaluation; China; Agribusiness. |
| Ano: 2010 |
URL: http://purl.umn.edu/93546 |
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| Hamelin, Cedric; Dosso, Laure; Hanan, Barry B.; Moreira, Manuel; Kositsky, Andrew P.; Thomas, Marion Y.. |
| Samples collected during the PACANTARCTIC 2 cruise fill a sampling gap from 53 degrees to 41 degrees S along the Pacific Antarctic Ridge (PAR). Analysis of Sr, Nd, Pb, Hf, and He isotope compositions of these new samples is shown together with published data from 66 degrees S to 53 degrees S and from the EPR. The recent advance in analytical mass spectrometry techniques generates a spectacular increase in the number of multidimensional isotopic data for oceanic basalts. Working with such multidimensional datasets generates a new approach for the data interpretation, preferably based on statistical analysis techniques. Principal Component Analysis (PCA) is a powerful mathematical tool to study this type of datasets. The purpose of PCA is to reduce the... |
| Tipo: Text |
Palavras-chave: Oceanic basalts; Pacific-Antarctic Ridge; Mantle heterogeneity; Principal Component Analysis; Sr Nd Pb Hf isotopes. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00031/14197/11508.pdf |
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