Partial diallel and genetic divergence analyses in maize inbred lines
| Autor: | Giovana Dal Lago Garcia, Marcelo Akira Sato, Tauana Gibim Eisele, Maria Fernanda de Souza Dias Maioli, Ronald José Barth Pinto, Diego Ary Rizzardi, Robson Akira Matsuzaki, Tereza Aparecida da Silva |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Agriculture (General) Randomized block design Biology 01 natural sciences S1-972 Diallel cross 03 medical and health sciences chemistry.chemical_compound Inbred strain Zea mays L Molecular marker genetic distance Hybrid zea mays l microsatellite markers UPGMA Horticulture 030104 developmental biology Genetic distance chemistry Agronomy and Crop Science 010606 plant biology & botany Arithmetic mean |
| Zdroj: | Acta Scientiarum: Agronomy, Vol 43, Pp e53540-e53540 (2020) Acta Scientiarum. Agronomy; Vol 43 (2021): Publicação contínua; e53540 Acta Scientiarum. Agronomy; v. 43 (2021): Publicação contínua; e53540 Acta Scientiarum. Agronomy Universidade Estadual de Maringá (UEM) instacron:UEM Acta Scientiarum. Agronomy, Volume: 43, Article number: e53540, Published: 20 NOV 2020 |
| ISSN: | 1807-8621 1679-9275 |
| Popis: | In this study, we aimed to estimate general and specific combining abilities (GCA and SCA, respectively) and to verify genetic divergence (Rogers distance, Unweighted Pair-Group Method Using Arithmetic Average - UPGMA) using microsatellite markers in maize inbred lines. Using a partial diallel scheme, a total of 19 inbred lines were crossed as (9 x 10), which were derived from the single hybrids SG6015 and P30F53, respectively. The 90 hybrids were evaluated in an incomplete randomized block design with common checks and three replications during the 2017-2018 growing season. Flowering time, average plant height, ear height insertion, average ear diameter, ear length, number of lodged and broken plants, mass of 100 grains and grain yield were measured. According to the analysis of variance, GCA, and SCA were significant (p < 0.05) in all the measured traits; inbred line B as well as 1 and 8, derived from the single hybrids SG6015 and P30F53, respectively, were selected due to their higher GCA values in grain yield to be used in crosses as testers, while the single cross hybrid (B x 1) was selected due to their higher SCA value in grain yield to be used in future breeding programs. The molecular marker analysis divided the inbred lines into two groups, where the highest dissimilarity (0.74) was observed between lines A and 9; however, these did not result in a high SCA value, therefore the hybrids obtained by such crossings were not selected for grain yield. In this study, we aimed to estimate general and specific combining abilities (GCA and SCA, respectively) and to verify genetic divergence (Rogers distance, Unweighted Pair-Group Method Using Arithmetic Average - UPGMA) using microsatellite markers in maize inbred lines. Using a partial diallel scheme, a total of 19 inbred lines were crossed as (9 x 10), which were derived from the single hybrids SG6015 and P30F53, respectively. The 90 hybrids were evaluated in an incomplete randomized block design with common checks and three replications during the 2017-2018 growing season. Flowering time, average plant height, ear height insertion, average ear diameter, ear length, number of lodged and broken plants, mass of 100 grains and grain yield were measured. According to the analysis of variance, GCA, and SCA were significant (p < 0.05) in all the measured traits; inbred line B as well as 1 and 8, derived from the single hybrids SG6015 and P30F53, respectively, were selected due to their higher GCA values in grain yield to be used in crosses as testers, while the single cross hybrid (B x 1) was selected due to their higher SCA value in grain yield to be used in future breeding programs. The molecular marker analysis divided the inbred lines into two groups, where the highest dissimilarity (0.74) was observed between lines A and 9; however, these did not result in a high SCA value, therefore the hybrids obtained by such crossings were not selected for grain yield. |
| Databáze: | OpenAIRE |
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