scholarly journals Genetic diversity assessment of Georgia peanut cultivars developed during ninety years of breeding

2021 ◽  
Author(s):  
Nino Brown ◽  
William D. Branch ◽  
Matthew Johnson ◽  
Jason Wallace
Keyword(s):  
Genetic Diversity ◽  
Diversity Assessment ◽  
Peanut Cultivars

Genetic diversity assessment and population structure analysis of pomegranate cultivars from different countries and Himalayan wild accessions

2021 ◽  
pp. 1-10
Author(s):  
Raghavendra Gunnaiah ◽  
Rudrappa C. Jagadeesha ◽  
Sarvamangala Cholin ◽  
Guranna Prabhuling ◽  
Ammanaghatta Govindaswamy Babu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Structure Analysis ◽  
Population Structure Analysis ◽  
Diversity Assessment ◽  
Wild Accessions

scholarly journals Development of DArT Marker Platforms and Genetic Diversity Assessment of the U.S. Collection of the New Oilseed Crop Lesquerella and Related Species

PLoS ONE ◽  
2013 ◽  
Vol 8 (5) ◽  
pp. e64062 ◽  
Author(s):  
Von Mark V. Cruz ◽  
Andrzej Kilian ◽  
David A. Dierig
Keyword(s):  
Genetic Diversity ◽  
Related Species ◽  
Dart Marker ◽  
Oilseed Crop ◽  
Diversity Assessment ◽  
The U.S

scholarly journals Diversity Assessment of Some Sesame (Sesamum indicum L.) Genotypes Cultivated in Northern Ghana Using Morphological and Simple Sequence Repeat (SSR) Markers

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Raphael Adu-Gyamfi ◽  
Ruth Prempeh ◽  
Issahaku Zakaria
Keyword(s):  
Genetic Diversity ◽  
Plant Height ◽  
Ssr Markers ◽  
Analysis Of Variance ◽  
Morphological Data ◽  
Northern Ghana ◽  
Land Races ◽  
Diversity Assessment ◽  
Parental Lines ◽  
Number Of Seeds

In Ghana, sesame is cultivated in some districts of northern Ghana. Genotypes cultivated are land races that are low yielding leading to decline in production. There is the need for improvement of these land races to generate high yielding cultivars. Characterization of genetic diversity of the sesame land races will be of great value in assisting in parental lines selection for sesame breeding programmes in Ghana. Twenty-five sesame land races were collected from five districts in northern Ghana noted for sesame cultivation. Seeds collected were planted in three replicates in randomized complete block design and were evaluated for a number of morphological characters. Data collected were subjected to Principal Component Analysis (PCA) and a dendrogram showing similarity between the accessions were drawn. Data on number of capsules per plant, number of seeds per capsule, and plant height at flowering were subjected to analysis of variance using GenStat Discovery Edition 4. Molecular genetic diversity was assessed by using thirty eight SSR markers widely distributed across sesame genome to characterize the materials. Twenty-one out of the 38 primers were polymorphic. Cluster analyses using the Euclidean similarity test and a complete link clustering method were used to make a dendrogram out of the morphological data. Analysis of variance showed that capsule number was significantly different; a range of 54.9 and 146.7 was produced. The number of seeds per capsule varied significantly and the variation between highest and lowest accession in seed production was 33%. Plant height was also significantly different ranging from 60.6 to 94.1 cm. Using morphological traits the accessions clustered into two major groups and two minor groups and variation among accessions were 10-61%. On the other hand, SSR marker-based dendrogram revealed five major and two minor groups. It showed that variation among the accessions was low, 10-20%. Heterozygosity was 0.52, total alleles produced were 410, and average allele per locus was 19.52. Six accessions, C3, C4, S5, W1, W3, and W5 fell in five different clusters in the SSR dendrogram and in six clusters in the morphomolecular based dendrogram. These accessions were noted for high capsule number per plant and seeds number per capsule and are recommended for consideration as potential parental lines for breeding programme for high yield.

Transferability of Cucurbita SSR markers for genetic diversity assessment of Turkish bottle gourd (Lagenaria siceraria) genetic resources

2015 ◽  
Vol 59 ◽  
pp. 45-53 ◽  
Author(s):  
Mehtap Yildiz ◽  
Hugo E. Cuevas ◽  
Suat Sensoy ◽  
Ceknas Erdinc ◽  
Faheem S. Baloch
Keyword(s):  
Genetic Diversity ◽  
Genetic Resources ◽  
Ssr Markers ◽  
Bottle Gourd ◽  
Lagenaria Siceraria ◽  
Diversity Assessment

scholarly journals Genetic Diversity Assessment of Portuguese Cultivated Vicia faba L. through IRAP Markers

Diversity ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 8 ◽  
Author(s):  
Diana Tomás ◽  
Ana Dias ◽  
Manuela Silva ◽  
Hugo Oliveira ◽  
Maria Suso ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Vicia Faba ◽  
Diversity Assessment ◽  
Irap Markers ◽  
Vicia Faba L

Genetic Diversity Assessment in Dolichos Bean (Lablab purpureus L.) Based on Principal Component Analysis and Single Linkage Cluster Analysis

2021 ◽  
Author(s):  
S.R. Singh ◽  
S. Rajan ◽  
Dinesh Kumar ◽  
V.K. Soni
Keyword(s):  
Genetic Diversity ◽  
Principal Component Analysis ◽  
Cluster Analysis ◽  
Principal Component ◽  
Component Analysis ◽  
Single Linkage ◽  
Pod Yield ◽  
Diversity Assessment ◽  
Single Linkage Cluster ◽  
Linkage Cluster

Background: Dolichos bean occupies a unique position among the legume vegetables of Indian origin for its high nutritive value and wider climatic adaptability. Despite its wide genetic diversity, no much effort has been undertaken towards genetic improvement of this vegetable crop. Knowledge on genetic variability is an essential pre-requisite as hybrid between two diverse parental lines generates broad spectrum of variability in segregating population. The current study aims to assess the genetic diversity in dolichos genotypes to make an effective selection for yield improvement.Methods: Twenty genotypes collected from different regions were evaluated during year 2016-17 and 2017-18. Data on twelve quantitative traits was analysed using principal component analysis and single linkage cluster analysis for estimation of genetic diversity.Result: Principal component analysis revealed that first five principal components possessed Eigen value greater than 1, cumulatively contributed greater than 82.53% of total variability. The characters positively contributing towards PC-I to PC-V may be considered for dolichos improvement programme as they are major traits involved in genetic variation of pod yield. All genotypes were grouped into three clusters showing non parallelism between geographic and genetic diversity. Cluster-I was best for earliness and number of cluster/plant. Cluster-II for vine length, per cent fruit set, pod length, pod width, pod weight and number of seed /pod, cluster III for number of pods/cluster and pod yield /plant. Selection of parent genotypes from divergent cluster and component having more than one positive trait of interest for hybridization is likely to give better progenies for development of high yielding varieties in Dolichos bean.

Genetic diversity assessment of the almond (Prunus dulcis (Mill.) D.A. Webb) traditional germplasm of Algarve, Portugal, using molecular markers

2014 ◽  
Vol 12 (S1) ◽  
pp. S164-S167 ◽  
Author(s):  
Luis Cabrita ◽  
Elena Apostolova ◽  
Alcinda Neves ◽  
António Marreiros ◽  
José Leitão
Keyword(s):  
Genetic Diversity ◽  
Genetic Relatedness ◽  
Prunus Dulcis ◽  
Sequence Repeat ◽  
Regional Office ◽  
Field Collection ◽  
Diversity Assessment ◽  
Major Cluster ◽  
Local Germplasm ◽  
Simple Sequence

In this study, 123 almond (Prunus dulcis (Mill.) D.A. Webb) trees identified among traditional orchards in the Algarve region and 53 trees of the local field collection managed by the regional office of the Portuguese Ministry of Agriculture (DRAALG) were assessed using isozyme, inter-single sequence repeat and simple sequence repeat or microsatellite techniques for the evaluation of genetic diversity and genetic relatedness and identification of new accessions for the field collection. The isozyme analysis allowed the distribution of the 176 plants into 13 different classes of enzyme similarity, while the use of DNA markers increased the distribution of the analysed trees among 140 discriminating DNA patterns. Multiple cases of homonymy and synonymy were identified in the local germplasm. Some traditional varieties, such as Lourencinha, appeared to be relatively homogeneous, while other local denominations, e.g. Galamba, included diverse genotypes. Of the 13 commercial varieties analysed in this study, 11 assembled in one major cluster clearly differentiated from the majority of the local genotypes. These results reinforced the perception that the Algarve traditional germplasm constitutes an important repository of genetic diversity, eventually carrying alleles of high agricultural interest such as the recently identified Phomopsis resistance in the traditional variety Barrinho Grado.

scholarly journals SSR DNA marker aided genetic diversity assessment of selected willow clones

Genetika ◽  
2013 ◽  
Vol 45 (2) ◽  
pp. 527-536 ◽  
Author(s):  
N.B. Singh ◽  
S. Joshi ◽  
P. Choudhary ◽  
J.P. Sharma
Keyword(s):  
Genetic Diversity ◽  
Molecular Diversity ◽  
Dna Marker ◽  
Similarity Coefficient ◽  
Gene Pools ◽  
Morphometric Traits ◽  
Genetic Base ◽  
Diversity Assessment ◽  
Ssr Primers ◽  
Clustering Pattern

Around 100 clones of tree willows were subjected for nursery screening twice on morphometric traits. Genetic diversity was assessed in twenty-five genetically superior willow clones hailing from six countries using 16 SSR primers. Fourteen primers amplified the DNA but only ten showed polymorphism. Total 34 bands were scored, out of that 27 were found to be polymorphic and 7 were monomorphic. Three primers showed 100% polymorphism whereas 79.4% polymorphism was recorded in total. The dendrogram obtained from SSR markers revealed that clone SE-69-002 (S. matsudana) and NZ-1040 (S. matsudana X S. alba) as most similar clones (Jaccards coefficient of 0.97), and clone PN-721(S. matsudana X S. alba) and PN-731 (S. nigra), as most divergent clones (Jaccards coefficient of 0.63). All the genotypes were grouped into 4 distinct clusters. On the basis of similarity coefficient analysis the first cluster comprised of 11 genotypes, the second cluster have 8 genotypes where as third one has only one genotype and fourth cluster retained five genotypes. The clustering pattern further indicated that the geographic distribution may not be the reflection of genetic diversity in willow clones. Genotypes with high molecular diversity could be used in breeding programme in order to obtain heterotic hybrids and development of gene pools with broad genetic base. The genotype specific bands developed by the SSR primers could also be used for identification of cultivar.

scholarly journals Genetic bottlenecks in Turkish okra germplasm and utility of iPBS retrotransposon markers for genetic diversity assessment

2015 ◽  
Vol 14 (3) ◽  
pp. 10588-10602 ◽  
Author(s):  
M. Yildiz ◽  
M. Koçak ◽  
F.S. Baloch
Keyword(s):  
Genetic Diversity ◽  
Diversity Assessment ◽  
Genetic Bottlenecks
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