Abstract
The article presents the study results of five species of honeysuckle blue self-fertilization of derivatives in 2019–2020:
 from Lonicera caerulea subsp. kamtschatika – Zinri, Sinyavokaya, Pavlovskaya, L. caerulea subsp. altaica – Sirius, Selena.
 In the variations of free, natural and artificial pollination the fruit setting, the number of ripen fruits and the average fruit
 weight were evaluated.
 A high indicator of fruit setting (73.7–100.0 %) was established in the variations of free and artificial self-pollination.
 Despite the high setting, the number of ripen fruits in the self-pollination variations was 1.3–12.8 times less than in the
 free-pollination variation. When self-fertilized, cultivars Pavlovskaya and Zinri got undeveloped, seedless fruits, cultivar
 Selena presented weak development of ovaries, shedding of fruits at the stage of colouration, predominance of puny, small,
 unfulfilled fruits and seeds.
 The species Sirius and Sinyavokaya, which set more than 20 % of full-fledged fruits in the variations of natural and
 artificial self-pollination, were distinguished.
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