Cross compatibility in intraspecific and interspecific hybridization in yam (Dioscorea spp.).

ABSTRACT: Yam (Dioscorea spp.) is a staple crop for millions of people in the tropics and subtropics. Its genetic improvement through breeding is being challenged by pre-zygotic and post-zygotic cross-compatibility barriers within and among species. Studies dissecting hybridization barriers on yam for improving the crossability rates are limited. This study aimed to assess the cross-compatibility, which yielded fruit set, viable seeds and progeny plants in an extensive intraspecific and interspecific crossing combinations in a yam genetic improvement effort to understand the internal and exogenous factors influencing pollination success. Cross-compatability was analyzed at the individual genotype or family level using historical data from crossing blocks and seedling nurseries from 2010 to 2020 at t

SUBMITTER: Mondo JM 

PROVIDER: S-EPMC8891288 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature