No abstract

No abstract

Cytogenetic peculiarities during the passing of meiosis were studied in anthers of 7 interspecific F 1 hybrids obtained by crossing annual wild species (Helianthus annuus, H. praecox, H. argophyllus) with the cultivated sunflower. The hybrids derived from H. annuus and H. argophyllus were characterized by a low frequency of aberrations (6.5-8.6%), which gives evidence of a good balance of the chromosome complex of these hybrids. The hybrids derived from the crosses between H. praecox and the cultivated sunflower were considerably less stable because of a high frequency of aberrations in meiosis (29.6-50.0%).

No abstract

No abstract