Genetic diversity of Chinese and Swedish rapeseed (Brassica napus L.) analysed by inter-simple sequence repeats (ISSRs)

2003 ◽  
Vol 1 (2-3) ◽  
pp. 169-174 ◽  
Author(s):  
M. A. Chao-zhi ◽  
F. U. Ting-dong ◽  
Stine Tuevesson ◽  
Bo Gertsson
Keyword(s):  
Genetic Diversity ◽  
Cluster Analysis ◽  
Brassica Napus ◽  
Simple Sequence Repeats ◽  
Brassica Napus L ◽  
The Third ◽  
Principal Coordinates ◽  
Group I ◽  
Inter Simple Sequence Repeats ◽  
Simple Sequence

AbstractWe have compared the genetic diversity of 24 Chinese weak-winter, Swedish winter and spring Brassica napus accessions by inter-simple sequence repeats (ISSRs). Using cluster analysis (UPGMA) based on 125 polymorphism bands amplified with 20 primers, the 24 accessions were divided into three groups. Six Swedish winter lines and eight Chinese weak-winter lines were in group I and group II consisted of two Chinese weak-winter lines, Xiangyou15 and Bao81. The third group contained eight Swedish spring lines. Principal coordinates (PCO) analysis showed similar groupings to cluster analysis. Results from cluster analysis and PCO analysis showed very clearly that Chinese weak-winter, Swedish spring and winter accessions were distinguished from each other and Chinese weak-winter accessions in this study were genetically closer to Swedish winter accessions than to Swedish spring accessions. The Chinese weak-winter accessions had larger diversity than the Swedish spring or winter accessions. This study indicated that ISSR is a suitable and effective tool to evaluate genetic diversity among rapeseed germplasm.

scholarly journals Morphological and Molecular Characterization of Iranian Wild Blackberry Species Using Multivariate Statistical Analysis and Inter-Simple Sequence Repeats (ISSR) Markers 

2021 ◽  
Author(s):  
Ali Gharaghani ◽  
Mehdi Garazhian ◽  
Saeid Eshghi ◽  
Ahmad Tahmasebi
Keyword(s):  
Genetic Diversity ◽  
Simple Sequence Repeats ◽  
Morphological Traits ◽  
Diversity Index ◽  
Issr Markers ◽  
Multivariate Statistical ◽  
Principal Coordinates ◽  
Inter Simple Sequence Repeats ◽  
Simple Sequence ◽  
Issr Primers

Abstract This study was carried out to estimate the genetic diversity and relationships of 74 Iranian blackberry genotypes assigned to 5 different species using inter-simple sequence repeats (ISSR) marker analysis and morphological trait characterization. Sixteen traits including phenological, vegetative and reproductive attributes were recorded, and 10 ISSR primers were screened. Results showed that yield and leaf width have the highest and lowest genetic diversity, (diversity index = 62.57 and 13.74), respectively. Flowering and ripening date recorded as traits having the strongest correlations (r = 0.98). The selected 10 ISSR primers produced a total of 161 amplified fragments (200 to 3500 bp) of which 113 were polymorphic. The highest, lowest and average PIC values were 0.53, 0.38 and 0.44, respectively. Principle component analysis (PCA) based on morphological traits showed that the first six components explained 84.9% of the variations of traits studied, whilst the principal coordinate analysis (PCoA) based on ISSR data implied the first eight principal coordinates explained 67.06% of the total variation. Cluster analysis based on morphological traits and ISSR data classified all genotypes into two and three major groups, respectively, and the distribution pattern of genotypes was mainly based on species and the geographic origins.

scholarly journals ISSR (Inter Simple Sequence Repeats) as molecular markers to study genetic diversity in tarantulas (Araneae, Mygalomorphae)

2009 ◽  
Vol 37 (1) ◽  
pp. 10-14 ◽  
Author(s):  
Salima Machkour‐M'Rabet ◽  
Yann Hénaut ◽  
Ariane Dor ◽  
Gabriela Pérez-Lachaud ◽  
Céline Pélissier ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Molecular Markers ◽  
Simple Sequence Repeats ◽  
Inter Simple Sequence Repeats ◽  
Simple Sequence
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