title: Evaluation of interspecific populations of grapevine in breeding for complex resistance to fungal diseases and phylloxera
abstract: Roentgenoscopy was used as a method to determine the quality of hybrid seeds and to predict the development of viable plants from interspecific hybridization. The seeds were grouped into five classes of quality (embryo classes) depending on embryo size and degree of endosperm development As the index number of a class increased, the proportion of plantlets and vigorous plants produced also increased. In order to evaluate genotypic peculiarities of the original forms and seedlings, the seedlings 
journal: Federal Research Centre for Cultivated Plants (Julius Kühn-Institut)