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Self-pollination, intra- and interspecific crosses in tomatoes
Zeist, André Ricardo; Resende, Juliano Tadeu Vilela de; Silva, Paulo Roberto da; Maluf, Wilson Roberto; Silva Júnior, André Dutra; Lima Filho, Renato Barros de; Faria, Marcos Ventura.
Afiliação
  • Zeist, André Ricardo; Universidade Federal de Santa Catarina. Departamento de Fitotecnia. Florianópolis. BR
  • Resende, Juliano Tadeu Vilela de; Universidade Estadual de Londrina. Departamento de Agronomia. Londrina. BR
  • Silva, Paulo Roberto da; Universidade Estadual do Centro-Oeste. Setor de Ciências Agrárias e Ambientais. Guarapuava. BR
  • Maluf, Wilson Roberto; Universidade Federal de Lavras. Departamento de Agricultura. Lavras. BR
  • Silva Júnior, André Dutra; Universidade Federal de Viçosa. Departamento de Fitotecnia. Viçosa. BR
  • Lima Filho, Renato Barros de; Universidade Estadual de Maringá. Departamento de Agronomia. Maringá. BR
  • Faria, Marcos Ventura; Universidade Estadual do Centro-Oeste. Setor de Ciências Agrárias e Ambientais. Guarapuava. BR
Sci. agric ; 80: e20220016, 2023. tab, ilus
Article em En | VETINDEX | ID: biblio-1427829
Biblioteca responsável: BR68.1
ABSTRACT
Tomato genotypes ( Solanum spp.) have genetic variability of most desirable features, such as resistance to biotic and abiotic stresses. However, incompatibility of crosses of wild genotypes with domesticated tomatoes, or even between wild genotypes, hinders the breeding process. Thus, knowledge of the reproductive biology of genotypes and conditions is necessary to maximize the success of artificial crossings. This study evaluated the compatibility of self-pollination, intra- and interspecific controlled crosses, stigma receptivity, and pollen viability in tomato genotypes. We used two commercial genotypes S. lycopersicum ('RVTM08' and 'Redenção') and seven accessions of wild tomato genotypes ('AF 26970', 'LA-1401', 'AF 19684', 'LA-1967', 'PI-127826', 'PI-134417', and 'LA-716'). We evaluated all crosses and their reciprocals, besides the self-pollinations. The variables evaluated were fruit index (FI), number of seeds per fruit (SN), and seed germination percentage (GP). Stigma receptivity and grains' pollen viability index (PVI) were also assessed. The results showed that 'LA-1967' was self-incompatible, had a low PVI, and generated fruit without seeds in most crosses. As female parents, 'RVTM08', 'Redenção', 'AF 26970', 'LA-1401', and 'AF 19684' showed higher FI and SN. There was a wide diversity of reproductive characteristics between the genotypes and crosses that did not influence GP. Compatibility of crosses in tomatoes is determined by the female parent choice and can be affected by stigma receptivity and the PVI.(AU)
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Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Sci. agric Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Sci. agric Ano de publicação: 2023 Tipo de documento: Article