ФАКТОРЫ, ОПРЕДЕЛЯЮЩИЕ АЛЛЕЛОПАТИЧЕСКУЮ АКТИВНОСТЬ ОВОЩНЫХ СЕЛЬДЕРЕЙНЫХ КУЛЬТУР

Contributions of main factors and their interaction effects on development of the allelopathic activity of seeds have been shown. The specificity of distribution of factor influence portion has been revealed depending on extract concentration.Показан вклад основных факторов и эффек тов их взаимодействии в развитие показа теля аллелопатической активности семян Выявлена специфика распределения долей влияния факторов в зависимости от кон центрации экстрактов

ВОЗНИКНОВЕНИЕ ИНДУЦИРОВАННОГО ПОКОЯ У СЕМЯН BRASSICA CHINESIS VAR. JAPONICA ПОД ВОЗДЕЙСТВИЕМ КОМПЛЕКСА АЛЛЕЛОПАТИЧЕСКИ АКТИВНЫХ ВЕЩЕСТВ

The factor that caused the inhibition of seed germination under the influence of 15 % extract from fruits Anethum graveolens was revealed. When transferring the test-object in favorable condition, this effect still remained imitating the seed dormancy. It was shown that under influence of temperature factor the time required to escape this state was considerably reduced.Выявлен факт торможения прорастания семян Brassica chinesis var. Japonica под влиянием 15,0% экстракта из плодов Anethum graveolens. При перенесении тест-объекта в благоприятные условия аллелопатический эффект сохраняется, имитируя состояние покоя семян. Установлено, что под влиянием температурного фактора время выхода из этого состояния значительно сокращается

БИОЛОГИЯ ФОРМИРОВАНИЯ И ПРОРАСТАНИЯ СЕМЯН УКРОПА

Architectonics of dill seed-plant and ripeness level of seeds determine the linear sizes of embryo, exerting an influence on dormant stage, speed of embryo development, and main quality characteristics of seeds, which are responsible for their germination ability.Архитектоника семенного растения укропа, степень зрелости семян определяют линейные размеры зародыша, оказывая существенное влияние на явление покоя, скорость доразвития зародыша и основные параметры качества семян, отвечающие за их прорастание

Impacts of high temperature on embryonic growth and seed germination of dill (Anethum graveolens)

Temperature is the main exogenous factor that determines the growth, development and productivity of agricultural plants, including seed germination. In this work, we studied the thermosensitivity of heterogeneous dill seeds (Anethum graveolens). The study aimed to study the short-term (1-5 days) effect of high temperature (40 degrees C) on the growth of the embryo and germination of dill seeds formed on different umbels of the mother plant. The growth of the embryo had a significant effect on seed germination (r = 0.976; P < 0.001). Seeds collected from primary umbels have a more developed embryo and can overcome the effects of thermal stress. We also found that the duration of heat exposure at 40 degrees C, leading to a decrease in viability, can vary from 1-5 days for seeds from primary umbels, to 1-2 days for seeds from secondary umbels, which, in our opinion, is due to the heteromorphism. The influence of the place of seed formation on the mother plant and the high temperature during germination is critical for embryo growth and dill seeds' germination