scholarly journals Relationship of Parental Genetic Distance with Heterosis and Specific Combining Ability in Sesame (Sesamum indicum L.) Based on Phenotypic and Molecular Marker Analysis

2018 ◽  
Vol 56 (3) ◽  
pp. 188-209 ◽  
Author(s):  
Sarita K. Pandey ◽  
Tapash Dasgupta ◽  
Abhishek Rathore ◽  
Anilkumar Vemula
Keyword(s):  
Molecular Marker ◽  
Genetic Distance ◽  
Combining Ability ◽  
Sesamum Indicum ◽  
Specific Combining Ability ◽  
Marker Analysis ◽  
Molecular Marker Analysis ◽  
Relationship Of

Relationship of parental genetic distance with agronomic performance, specific combining ability, and predicted breeding values of raspberry families

Euphytica ◽  
2018 ◽  
Vol 214 (2) ◽  
Author(s):  
Aurelio Hernández-Bautista ◽  
Ricardo Lobato-Ortiz ◽  
J. Jesús García-Zavala ◽  
Mario Rocandio-Rodríguez ◽  
José Apolinar Mejía-Contreras ◽  
...  
Keyword(s):  
Genetic Distance ◽  
Combining Ability ◽  
Specific Combining Ability ◽  
Agronomic Performance ◽  
Breeding Values ◽  
Relationship Of

scholarly journals Combining Ability for Disease Resistance, Yield, and Horticultural Traits of Cacao (Theobroma cacao L.) Clones

2006 ◽  
Vol 131 (2) ◽  
pp. 231-241 ◽  
Author(s):  
Cuauhtemoc Cervantes-Martinez ◽  
J. Steven Brown ◽  
Raymond J. Schnell ◽  
Wilbert Phillips-Mora ◽  
Jemmy F. Takrama ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Molecular Marker ◽  
Combining Ability ◽  
Gene Action ◽  
Type I ◽  
Trunk Diameter ◽  
Marker Analysis ◽  
Breeding Populations ◽  
Horticultural Traits ◽  
Molecular Marker Analysis

Knowledge of genetic differences among commonly cultivated cacao clones, as well as the type of gene action involved for disease resistance, yield, quality, and horticultural traits, are essential for cacao breeders to select parental clones efficiently and effectively. This information is also critical for quantitative geneticists in designing and improving quantitative trait loci (QTL) localization strategies using breeding populations, whether they involve analysis of multiple populations crossed to one common parent or association genetic analysis. The objectives of this research were to 1) verify the genetic identity of parental cacao clones used to produce hybrids for field evaluation at the Centro Agrónomico Tropical de Investigación y Enzeñanza (CATIE), Turrialba, Costa Rica, using molecular marker analysis, and 2) estimate general and specific combining ability (GCA and SCA) of the parental clones for resistance to frosty pod (Moniliophthora roreri Cif. and Par.) and black pod [Phytophthora palmivora (Butl.) Butl.] diseases, total number of pods, vigor (as measured by trunk diameter), and measures of maturity (months to first flowering and pod production). Misidentification of cacao clones was found at three levels. Molecular marker analysis revealed that six parental clones differed in identity to supposedly identical accessions from other germplasm collections. Trees of the parental clone UF 273 consisted of two clearly different genotypes, resulting in two types of progeny, requiring separate designation for correct statistical analysis. Out-crossed progeny, presumably from foreign pollen, and selfed progeny were also found. Two of the traits measured, percent healthy pods and percent pods with frosty pod, showed predominantly additive gene action, while the traits total number of pods and trunk diameter, demonstrated regulation by both additive and nonadditive gene action. Number of months to first flowering and first fruit both showed evidence of predominant regulation by nonadditive gene effects. Crosses of two parental clones, UF 712 and UF 273 Type I, were identified as potential candidates for QTL analysis as breeding populations, given their favorable GCA estimates for frosty pod resistance and total pod production, respectively.

Molecular marker analysis of F1 progenies and their parents for carotenoids inheritance in African cassava (Manihot esculenta Crantz)

2014 ◽  
Vol 13 (40) ◽  
pp. 3999-4007 ◽  
Author(s):  
D. N. Njoku, ◽  
V. E Gracen, ◽  
S. K. Offei, ◽  
I. K. Asante, ◽  
E. Y. Danquah, ◽  
...  
Keyword(s):  
Molecular Marker ◽  
Manihot Esculenta ◽  
Manihot Esculenta Crantz ◽  
Marker Analysis ◽  
Molecular Marker Analysis

scholarly journals Construction of a breeding parent population of Populus tomentosa based on SSR genetic distance analysis

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Zhiqiang Han ◽  
Qiang Han ◽  
Yufei Xia ◽  
Xining Geng ◽  
Kang Du ◽  
...  
Keyword(s):  
Genetic Distance ◽  
Combining Ability ◽  
Growth Traits ◽  
Random Mating ◽  
Specific Combining Ability ◽  
Hybrid Breeding ◽  
High Fertility ◽  
Germplasm Resources ◽  
Parent Population ◽  
High Genetic Diversity

Abstract Parent selection is the core of hybrid breeding. The breeding strategy involving the parental identification of superior open-pollinated progeny of Populous tomentosa germplasm resources can significantly improve the efficiency of parental matching. However, due to some factors such as loose powdering time and pollen competitiveness, the offspring derived from open-pollination families which do not undergo completely random mating. Although hybrid combinations based on the male identification method have a high combining ability, this method cannot easily cover the mating combinations of all male and female specimens in the germplasm bank. In addition, the performance of superior plants in open-pollinated families also affects the selection result. If the trait performance value is higher than the population average, then the special combining ability of the reconstructed hybrid combination may be overestimated. Obtaining a solution to the above problems is of great significance for improving the efficiency and accuracy of selecting hybrid parents of P. tomentosa. In this study, 24 pairs of SSR (Simple Sequence Repeats) molecular markers were used to analyze the genetic differentiation of P. tomentosa germplasm resources. The results showed that the genetic variation of the P. tomentosa population was derived from individuals within the provenance, indicating that high genetic diversity is preserved in provenances. The correlation analysis showed that there was a significant positive correlation between the special combining ability of planting height and diameter at breast height (dbh) of the 34 full-sib progeny population and the genetic distance between the parents. Then, the genetic distance between 18 female plants with high fertility and 68 male plants with large pollen quantity was analyzed using this correlation. Fifteen female parents and 12 male parents were screened out, and 52 hybrid combinations with high specific combining ability for growth traits were predicted. Furthermore, for the male parent identification of superior individual plants, we constructed the breeding parent population including 10 female parents and 5 male parents, generating 14 hybrid combinations with potentially high combining ability. The results of the hybridization test showed that the specific combining ability of plant height and dbh was significantly higher than the controlled pollination. Moreover, genetic distance and paternal identification can be used to rapidly and efficiently construct hybrid parent combinations and breeding parent populations.

scholarly journals Genetic diversity in cultivated carioca common beans based on molecular marker analysis

2011 ◽  
Vol 34 (1) ◽  
pp. 88-102 ◽  
Author(s):  
Juliana Morini Küpper Cardoso Perseguini ◽  
Alisson Fernando Chioratto ◽  
Maria Imaculada Zucchi ◽  
Carlos Augusto Colombo ◽  
Sérgio Augusto Moraes Carbonell ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Molecular Marker ◽  
Common Beans ◽  
Marker Analysis ◽  
Molecular Marker Analysis
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