Cross preferences and genetic diversity of Psidium interspecific hybrids through morphoagronomic traits and resistance to Meloidogyne enterolobii.

Autor:	Almeida OF; Universidade Estadual do Norte Fluminense Darcy Ribeiro/UENF, Avenida Alberto Lamego, 2000, Parque Califórnia, 28013-602 Campos dos Goytacazes, RJ, Brazil., Viana AP; Universidade Estadual do Norte Fluminense Darcy Ribeiro/UENF, Avenida Alberto Lamego, 2000, Parque Califórnia, 28013-602 Campos dos Goytacazes, RJ, Brazil., Gomes VM; Instituto Federal de Educação, Ciência e Tecnologia Fluminense/IFF, Estrada Cambuci Km 05, s/n, Três Irmãos, 28430-000 Cambuci, RJ, Brazil., Souza RM; Universidade Estadual do Norte Fluminense Darcy Ribeiro/UENF, Avenida Alberto Lamego, 2000, Parque Califórnia, 28013-602 Campos dos Goytacazes, RJ, Brazil., Santos PRD; Instituto Federal do Amapá/IFAP, Campus Porto Grande, BR210 Km 103, Zona rural, 68997-000 Porto Grande, AP, Brazil., Amaral Júnior ATD; Universidade Estadual do Norte Fluminense Darcy Ribeiro/UENF, Avenida Alberto Lamego, 2000, Parque Califórnia, 28013-602 Campos dos Goytacazes, RJ, Brazil., Rodrigues DL; Universidade Estadual da Região Tocantina do Maranhão/UEMASUL, Av. Brejo do Pinto, s/n, 65975-000 Estreito, MA, Brazil.
Jazyk:	angličtina
Zdroj:	Anais da Academia Brasileira de Ciencias [An Acad Bras Cienc] 2023 Sep 18; Vol. 95 (4), pp. e20190120. Date of Electronic Publication: 2023 Sep 18 (Print Publication: 2023).
DOI:	10.1590/0001-3765202320190120
Abstrakt:	The introgression of M. enterolobii resistance-related genes in guava breeding programs can be compromised by incompatibility among Psidium species. This study aimed to evaluate the female parent preference and genetic diversity of Psidium interspecific hybrids using morphoagronomic traits and resistance to M. enterolobii. There were evaluated cross successes and germination from crosses between accesses of P. cattleyanum, P. guineense and P. guajava and the genetic diversity by Ward-MLM method of hybrids according to descriptors developed for the genus. Crosses were more successful when P. cattleyanum was the female parent. Germination was more successful in crosses involving P. cattleyanum and P. guajava. Four groups were formed. The group IV clustered the most resistant genotypes, composed by genotypes of P. cattleyanum x P. guineense, while the group II was the most susceptible. The groups I and III grouped some genotypes of P. cattleyanum x P. guajava with low levels of susceptibility. There are preferences of female parent species among crosses. Some individuals of groups I and III can be used as source of resistance genes for the breeding program, due the presence of favorable alleles inherited from guava parent. The high susceptibility leads to reduction in root development.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu