Uman NUH | today: 12/22/2024
| Author(s) |
Pyzhyanova A.A., Postgraduate, , Uman National University of Horticulture, Ukraine Balabak A.F., Doctor of Agricultural Sciences, , Uman National University of Horticulture, Ukraine |
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|---|---|---|---|
| Category | The Agronomy | ||
| year | 2013 | issue | Issue #82 |
| pages | 94-100 | index UDK | 582.688.3: 631.535:634.1 | DOI |
| Abstract | The issues of introduction and spreading of new and promising varieties of Higbush blueberry (Vaccinium сorymbosum L.), their state, prospects and economic value are discussed in the article. The results of studying of the specific features of adventitious rhizogenesis of the green stem cuttings in the agroecological conditions of the Right-Bank Forest-Steppe of Ukraine are given. It is found that the green stem cuttings of the studied varieties of Highbush blueberry have a low regenerative capacity, the rate of which depends on variety, terms of storing and planting of the cuttings for rooting, type of a shoot and its metamerism. The levels of rooting ability of softwood stem cuttings of studied varieties of Highbush blueberry are divided into three groups: Bluecrop and Darrow root easily, Blue Gold, Duke, Toro, Spartan have medium rooting capacity, and Elliott shows weak rooting. The number of internodes and nodes of softwood stem cuttings determines their regenerative capacity. The reduction of their number to less than three is attended by the reduction of all indicators of rhizogenesis. It is found that cuttings from basal part of shoot show the highest regenerative capacity, cuttings from the middle part show lower capacity and apical cuttings show the lowest regenerative capacity. The number of rooted three-node basal cuttings in the example with variety of Bluecrop amounted to 34,4, two-nodes — to 12,3, and one-node — only to 5,4%. The number and the length of root system also depended on the type of cutting and its metamerism. The regeneration rate of adventitious roots, their number and total length exceeded analogous indicators by 2 ─ 3 times in comparison with one-node and two-node cuttings. All the information should be taken into account in further improvement of technological aspects of growing own-rooted planting material of introduced varieties of Highbush blueberry from stem cuttings. | ||
| Key words | highbush blueberry, varieties, parent plant, stem cuttings | ||