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ГЕНЕТИКА, БИОТЕХНОЛОГИЯ, СЕЛЕКЦИЯ И СЕМЕНОВОДСТВО
ͪКормопроизводствоͫ № 6, 2016
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BIOLOGICAL FEATURES OF TILLERING AND FORMATION THE SEED YIELD
OF SMOOTH BROME (BROMOPSIS INERMIS (LEYS.) HOLUB) DUE TO THE CUTTING TIME
I. M. Shatskiy1, PhD Agr. Sc.
V. N. Zolotarev 2, PhD Agr. Sc.
A. V. Ponomarenko1
1Voronezh Experiment Station for Perennial Grasses, the All-Russian Williams Fodder Research Institute
396420, Russia, the Voronezh region, Pavlovsk, Dokuchaev str., 1
E-mail:
2Department of Seed Science and Seed Production of Forage Crops, the All-Russian Williams Fodder Research Institute
141055, Russia, the Moscow region, Lobnya, Science Town, 1
Е-mail:
The arƟcle shows the results of studying Ɵllering biology of smooth brome (Bromopsis inermis (Leys). Holub) hybrid ‘Vorone-
zhskiy 17’ under steppe condiƟons in the south of the Central Chernozem region. GeneraƟve shoots developed from shortened
inferƟle shoots of the previous year with 1–5 leaves. Maximum generaƟve shoots — 78 and 60 % — developed from shoots
with four or five leaves. Their seed producƟvity was by 37–46 % more than it was of the shoots with three leaves, and in 3.4–
3.6 Ɵmes more than with two. Only 15 % of shortened inferƟle shoots with two leaves and 50 % with three leaves became gen-
eraƟve. Cuƫng since August 10th to September 20th, the number of shortened shoots with 1–2 leaves increased gradually, with
4–5 leaves — decreased. The number of shoots with three leaves increased from 20 to 41 % in general structure. Cuƫng the
vegetaƟve mass contributed to decreasing general number of shoots by 12–18 %, and to creaƟng more favourable condiƟons
for forming seed yield in the next year. Cuƫng in August was preferable than in September because then shortened shoots
with 4–5 leaves were more developed. Seed yield did not depend on cuƫng Ɵme.
Keywords: smooth brome, hybrid, Ɵllering, cuƫng, producƟvity, seeds.
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