scholarly journals Genetic diversity and coefficient of parentage between clones and sugarcane varieties in Brazil

2014 ◽  
Vol 13 (4) ◽  
pp. 9005-9018 ◽  
Author(s):  
B.P. Brasileiro ◽  
C.D. Marinho ◽  
P.M.A. Costa ◽  
L.A. Peternelli ◽  
M.D.V. Resende ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Coefficient Of Parentage ◽  
Sugarcane Varieties

scholarly journals Genetic Diversity Analysis of Sugarcane Parents in Chinese Breeding Programmes Using gSSR Markers

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Qian You ◽  
Liping Xu ◽  
Yifeng Zheng ◽  
Youxiong Que
Keyword(s):  
Genetic Diversity ◽  
Molecular Diversity ◽  
Genetic Relationships ◽  
Breeding Programs ◽  
Sugarcane Varieties ◽  
Breeding Station ◽  
The World ◽  
Breeding Programmes ◽  
Genetic Structures ◽  
Simple Sequence

Sugarcane is the most important sugar and bioenergy crop in the world. The selection and combination of parents for crossing rely on an understanding of their genetic structures and molecular diversity. In the present study, 115 sugarcane genotypes used for parental crossing were genotyped based on five genomic simple sequence repeat marker (gSSR) loci and 88 polymorphic alleles of loci (100%) as detected by capillary electrophoresis. The values of genetic diversity parameters across the populations indicate that the genetic variation intrapopulation (90.5%) was much larger than that of interpopulation (9.5%). Cluster analysis revealed that there were three groups termed as groups I, II, and III within the 115 genotypes. The genotypes released by each breeding programme showed closer genetic relationships, except the YC series released by Hainan sugarcane breeding station. Using principle component analysis (PCA), the first and second principal components accounted for a cumulative 76% of the total variances, in which 43% were for common parents and 33% were for new parents, respectively. The knowledge obtained in this study should be useful to future breeding programs for increasing genetic diversity of sugarcane varieties and cultivars to meet the demand of sugarcane cultivation for sugar and bioenergy use.

scholarly journals Genetic variability in trait-specific rice germplasm groups based on coefficient of parentage, SSR markers and fertility restoration

2014 ◽  
Vol 13 (1) ◽  
pp. 56-67
Author(s):  
Pawan Khera ◽  
Akhilesh Kumar Singh ◽  
Rahul Priyadarshi ◽  
Durga Khandekar ◽  
Rajani K Allu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Hybrid Rice ◽  
Fertility Restoration ◽  
Phenotypic Traits ◽  
Rice Breeding ◽  
Coefficient Of Parentage ◽  
Rice Germplasm ◽  
Cms Line ◽  
The Mean

To maximize heterosis, it is important to understand the genetic diversity of germplasm and associate useful phenotypic traits such as fertility restoration for hybrid rice breeding. The objectives of the present study were to characterize genetic diversity within a set of rice germplasm groups using coefficient of parentage (COP) values and 58 simple sequence repeat (SSR) markers for 124 genotypes having different attributes such as resistance/tolerance to various biotic and abiotic stresses. These lines were also used for identifying prospective restorers and maintainers for wild abortive-cytoplasmic male sterile (CMS) line. The mean COP value for all the lines was 0.11, indicating that the genotypes do not share common ancestry. The SSR analysis generated a total of 268 alleles with an average of 4.62 alleles per locus. The mean polymorphism information content value was 0.53, indicating that the markers selected were highly polymorphic. Grouping based on COP analysis revealed three major clusters pertaining to the indica, tropical japonica and japonica lines. A similar grouping pattern with some variation was also observed for the SSR markers. Fertility restoration phenotype based on the test cross of the 124 genotypes with a CMS line helped identify 23 maintainers, 58 restorers and 43 genotypes as either partial maintainers or partial restorers. This study demonstrates that COP analysis along with molecular marker analysis might encourage better organization of germplasm diversity and its use in hybrid rice breeding. Potential restorers identified in the study can be used for breeding high-yielding stress-tolerant medium-duration rice hybrids, while maintainers would prove useful for developing new rice CMS lines.

scholarly journals Pedigree Data Analysis of a Wheat Population

Proceedings ◽  
2020 ◽  
Vol 36 (1) ◽  
pp. 148
Author(s):  
Sepideh Rouholamin ◽  
Vivi Arief ◽  
Ian Delacy ◽  
Kaye Basford
Keyword(s):  
Genetic Diversity ◽  
Graphical Representation ◽  
Principal Component ◽  
Wheat Cultivars ◽  
Pedigree Data ◽  
Coefficient Of Parentage ◽  
Breeding Technique ◽  
Wheat Population ◽  
Crop Development ◽  
Inbred Populations

Genetic diversity is an essential part of successful crop development and can be evaluated by different methods, e.g. the Coefficient of Parentage (COP). This coefficient is established on pedigree data. This method can determine the variation among genotypes without the influence of environment effects as would be the case for field data. This study measured genetic diversity among 317 wheat cultivars from a population generated by the speed breeding technique. Using pedigree data, we determined the associations between parents and individuals, and then used the pattern analysis techniques of principal component analysis and clustering. The results enabled an appropriate graphical representation of wheat cultivars. This information is useful for selecting future parents in breeding programs. This demonstrates that using COP is a viable way to evaluate diversity among genotypes, especially in inbred populations.

Genetic Diversity Patterns in Japanese Soybean Cultivars Based on Coefficient of Parentage

Crop Science ◽  
2002 ◽  
Vol 42 (4) ◽  
pp. 1331-1342 ◽  
Author(s):  
Xingliang Zhou ◽  
Thomas E. Carter ◽  
Zhanglin Cui ◽  
Shoji Miyazaki ◽  
Joseph W. Burton
Keyword(s):  
Genetic Diversity ◽  
Coefficient Of Parentage ◽  
Diversity Patterns ◽  
Soybean Cultivars

scholarly journals Assessment of Genetic Diversity in Contrasting Sugarcane Varieties Using Inter-Simple Sequence Repeat (ISSR) Markers

2011 ◽  
Vol 02 (03) ◽  
pp. 425-432 ◽  
Author(s):  
Maria Lucília M. da Costa ◽  
Lidiane L. Barbosa Amorim ◽  
Alberto V. C. Onofre ◽  
Luiz J. O. Tavares de Melo ◽  
Maria Betânia M. de Oliveira ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Simple Sequence Repeat ◽  
Inter Simple Sequence Repeat ◽  
Issr Markers ◽  
Sequence Repeat ◽  
Sugarcane Varieties ◽  
Simple Sequence

scholarly journals Short Communication: Genetic diversity of Indonesian’s sugarcane varieties (Saccharum officinarum) based on RAPD molecular markers

2019 ◽  
Vol 20 (10) ◽  
Author(s):  
RINA SRI KASIAMDARI ◽  
Ganies Riza Aristya ◽  
HERI PRABOWO ◽  
MUHAMMAD FAUZI ARIF ◽  
Christy Ariesta
Keyword(s):  
Genetic Diversity ◽  
Molecular Markers ◽  
Binary Data ◽  
Crop Production ◽  
Saccharum Officinarum ◽  
High Genetic Diversity ◽  
Sugarcane Plant ◽  
Sugarcane Varieties ◽  
Pair Group ◽  
The Cost

Abstract. Kasiamdari RS, Aristya GR, Prabowo H, Ariesta C, Arif MF. 2019. Genetic diversity of Indonesian’s sugarcane varieties (Saccharum officinarum) based on RAPD molecular markers. Biodiversitas 20: 3005-3010. Sugarcane (Saccharum officinarum L.) belongs to the Poaceae family which are widely used for sweeteners production. In Indonesia, the need for sugarcane continues to increase along with its increased use in the production of bioethanol from molasses, a by-product of sugar production. However, the supply for sugar is still far from enough. Improvement of sugarcane productivity can be done by selecting superior varieties to form a new superior hybrid. Maintaining high genetic diversity in a population is essential. Selection of varieties is important because it can increase productivity without increasing the cost of crop production. Even the selected pest-resistant varieties can reduce the cost of crop production. Indonesia had produced many superior sugarcane plant varieties, but studies on their characters and genetic relationship are still lacking. Several molecular markers have been used to elucidate the genetic diversity among sugarcane varieties. Random Amplified Polymorphism DNA (RAPD) is one of the molecular markers that have been proven to describe genetic diversity among sugarcane plants. This study aimed to determine the genetic diversity among 22 superior sugarcane varieties in Indonesia based on eight RAPD molecular markers. The superior sugarcane varieties in Indonesia in this study were obtained from Indonesian Sweetener and Fiber Crops Research Institute (ISFRI), Malang and Madukismo Sugar Factory, Yogyakarta. DNA products were visualized by using gel electrophoresis and resolved bands were scored as binary data as presence (1) and absence (0). Linkage distance was done based on Jaccard’s similarity coefficient, and clustering analysis was performed based on the unweighted pair- group average (UPGMA) method. Polymorphism Information Content (PIC) analysis showed a high degree of polymorphism ranging from 0.76 to 0.92. Cluster analysis showed that 22 sugarcane varieties were divided into two main clusters and four sub-clusters based on their origin.     

scholarly journals Genetic diversity in sugarcane varieties in Brazil based on the Ward-Modified Location Model clustering strategy

2014 ◽  
Vol 13 (1) ◽  
pp. 1650-1660 ◽  
Author(s):  
B.P. Brasileiro ◽  
C.D. Marinho ◽  
P.M.A. Costa ◽  
E.F.A. Moreira ◽  
L.A. Peternelli ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Location Model ◽  
Sugarcane Varieties

scholarly journals Assessment of genetic diversity on a sample of cocoa accessions resistant to witches' broom disease based on RAPD and pedigree data

Bragantia ◽  
2005 ◽  
Vol 64 (3) ◽  
pp. 361-368 ◽  
Author(s):  
Ronaldo Carvalho dos Santos ◽  
José Luís Pires ◽  
Uilson Vanderley Lopes ◽  
Karina Peres G. Gramacho ◽  
Acassi Batista Flores ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Relatedness ◽  
Genetic Distances ◽  
Pedigree Information ◽  
Germplasm Management ◽  
Pedigree Data ◽  
Coefficient Of Parentage ◽  
Low Genetic Diversity ◽  
Broom Disease ◽  
Different Sources

Genetic diversity in cocoa (Theobroma cacao L.) has been assessed based on morphological and molecular markers for germplasm management and breeding purposes. Pedigree data is available in cocoa but it has not been used for assessing genetic relatedness. The geneitic diversity of 30 clonal cocoa accessions resistant to witche´ broom disease, from the CEPEC series, were studied on the basis of RAPD data and pedigree information. Twenty of these accessions descend from the TSA-644 clone, originated from a cross between the Upper Amazon germplasm called Scavina-6, the main source of resistance to witches' broom disease, and IMC-67. The ten remaining clones come from different sources including Amazon and Trinitario germplasm. RAPD data was collected using 16 primers and pedigree information was obtained from the International Cocoa Germplasm Database. Genetic similarities, genetic distances and coefficient of parentage were calculated using available software. Relatively low genetic diversity was observed in this germplasm set, probably because of great genetic relatedness amongst accessions studied and the poor representation of the germplasm. The TSA-644 descendants were more diverse than the other accessions used in the study. This might be due to the origin of the TSA clone, which was derived from highly divergent genotypes. Association between genetic similarities based on RAPD data and coefficient of parentage, based on pedigree data, was very low, probably due to the homogeneity of the breeding stocks and poor pedigree information. These findings are useful to cocoa breeders in planning crosses for the development of hybrid and clonal cultivars.

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