Characterization and genetic diversity of pepper (Capsicum spp) parents and interspecific hybrids
| Autor: | M. M. do Rêgo, P. A. Barroso, A P G da Silva, E. R. do Rêgo, Maria do Perpetuo Socorro Damasceno Costa |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Genetic diversity Polymorphism Genetic Phylogenetic tree Quantitative Trait Loci food and beverages 0102 computer and information sciences General Medicine Biology Quantitative trait locus 01 natural sciences RAPD 010201 computation theory & mathematics Polymorphism (computer science) Fruit Botany Pepper Genetics Trait Hybridization Genetic Capsicum Molecular Biology 010606 plant biology & botany Hybrid |
| Zdroj: | Genetics and Molecular Research. 15 |
| ISSN: | 1676-5680 |
| DOI: | 10.4238/gmr.15027652 |
| Popis: | Pepper species exhibit broad genetic diversity, which enables their use in breeding programs. The objective of this study was to characterize the diversity between the parents of different species and their interspecific hybrids using morphological and molecular markers. The parents of Capsicum annuum (UFPB-01 and -137), C. baccatum (UFPB-72), and C. chinense (UFPB-128) and their interspecific hybrids (01x128, 72x128, and 137x128) were used for morphological and molecular characterization. Fruit length and seed yield per fruit (SYF) traits showed the highest variability, and three groups were formed based on these data. CVg/CVe ratio values (>1.0) were calculated for leaf length (1.67) and SYF (5.34). The trait that most contributed to divergence was the largest fruit diameter (26.42%), and the trait that least contributed was pericarp thickness (0.33%), which was subject to being discarded. The 17 primers produced 58 polymorphic bands that enabled the estimation of genetic diversity between parents and hybrids, and these results confirmed the results of the morphological data analyses. The principal component analysis results also corroborated the morphological and random-amplified polymorphic DNA data, and three groups that contained the same individuals were identified. These results confirmed reports in the literature regarding the phylogenetic relationships of the species used as parents, which demonstrated that C. annuum was closer to C. chinense as compared to C. baccatum. |
| Databáze: | OpenAIRE |
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