Fitness estimation through performance comparison of F1 hybrids with their parental species Oryza rufipogon and O. sativa.

ABSTRACT:

Background and aims

Introgression of crop genes into populations of wild relatives has important implications for germplasm conservation as well as for the persistence of novel transgenes in wild populations. Studies of hybrid fitness can be used to evaluate the potential for introgression to occur following episodes of interspecific hybridization.

Methods

This study estimated relative fitness of interspecific hybrids through performance comparison of F(1) hybrids with their parental species, a cultivated rice (Oryza sativa) Minghui-63 and perennial common wild rice (O. rufipogon) under the cultivation conditions.

Key results

Compared with their parents, the hybrids had the lowest values of seedling survival ability, pollen viability and seed production; intermediate

SUBMITTER: Song ZP 

PROVIDER: S-EPMC4242197 | biostudies-literature | 2004 Mar

REPOSITORIES: biostudies-literature