Keywords
reproduction ability
hybrid tea roses
How to Cite
Abstract
Objective – to study morphological indicators of reproductive success and to evaluate assess the reproductive potential of 20 cultivars of hybrid tea roses from collection of M.M. Gryshko National Botanical Garden of the NAS of Ukraine.
Material and methods. 20 cultivars of hybrid tea roses of the collection of M.M. Gryshko National Botanical Garden of the NAS of Ukraine were studied. The quantitative indicators of the generative organs of the studied varieties are estimated according to the methodological instructions given in the Atlas of the morphological features of the varieties of roses.
Results. As a result of studying the flower structure of hybrid tea roses, it was determined that their inherent feature is the phenomenon of trimorphous geterostyly, namely there are three forms of the flower of cultivars: short-, medium- and longstyles. Potential and real seed productivity is identified. High levels of the reproduction success are determined for cultivars Alexandre Pouchkine, Aphrodite, Line Renaud: the highest number of seeds in the hip is recorded in cultivar Alexandre Pouchkine; the cultivars Aphrodite (25.0 %) and Line Renaud (24.7 %) showed the highest percentage of seed setting.
Conclusion. The data should be used when planning rose breeding, namely for the selection of parent plants: the cultivars with well-knotted seeds should be used as seed plants.
References
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