Fertility analysis of intraspecific hybrids in Vitis vinifera and screening of superior hybrid combinations.

ABSTRACT: The correlations were explored between fertility indicators of intraspecific V. vinifera hybrids and different cultivars were subjected to selfing or used in reciprocal crosses by testing them as female parents or male parents. Two cold-resistant and four high-quality cultivars were selected, and the offspring of fourteen crosses and six self-combinations were evaluated. The pollen viability of the six cultivars was determined by TTC staining. Compatibility and the rates of fruit-setting, seediness, germination, emergence, and seedling were measured as parameters that can affect fertility of both hybridization and self-crossing processes. Using principal component analysis, the six fertility indexes were transformed into comprehensive principal components, and the weights of the ind

SUBMITTER: Wang ZL 

PROVIDER: S-EPMC9403984 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature