^АВТ: Guillemin J.-P.; Chauvel B.
^ЗГЛ: Effects of the seed weight and burial depth on the seed
behavior of common ragweed (Ambrosia artemisiifolia)
[Влияние массы, глубины заделки семян, а также температуры на
всхожесть, прорастание семян и появление всходов амброзии
^ВЫХ: Weed Biology & Management, 2011; Vol.11,N 4. - P.
^РЕФ: Common ragweed (Ambrosia artemisiifolia L.) is one of the annual plants that were described recently as invasive weeds in Europe. This species is described as an invasive plant that produces seeds that are highly variable. Its production of variably sized seeds is regarded as promoting its spread in different environments. Experiments were carried out to determine the influence of the seed weight and temperature on germination and the influence of the seed weight and burial depth on seedling emergence. The seeds were divided into a number of classes of weight and the seed weight effect on germination was evaluated by Petri dish assays. In another experiment, the seeds were buried at different depths in a clay soil/sand mix to estimate the burial effect on germination and seedling emergence. The germination level of A. artemisiifolia was high overall, between 76.8% and 94.2%. The seed germination was modified by temperature but it was not influenced by the seed weight. The amounts of germination and seedling emergence were greater for the seeds on the soil surface and decreased with an increasing burial depth, from 2 to 8 cm. No germination or emergence was observed for the seeds that were buried at 10 and 12 cm. The lightest seeds were more sensitive to burial. A greater level of seedling emergence for those seeds that were placed near the soil surface could explain the success of this species in open habitats, where the probability of deeper burial is low. After high seed production, the management of A. artemisiifolia in fields could be partly achieved through soil tillage, burying seeds below 10 cm, and not carrying out deep soil tillage the following year.
^ВИД: Статья из книги
^ТЕР: АМБРОЗИЯ. СОРНЯКИ (Weeds). AMBROSIA ARTEMISIIFOLIA
[AMBROSIA ELATIOR; АМБРОЗИЯ ВЫСОКАЯ; АМБРОЗИЯ
ОБЫКНОВЕННАЯ; АМБРОЗИЯ ПОЛЫННОЛИСТНАЯ]. СЕМЕНА (Seed)
[ПОСЕВНОЙ МАТЕРИАЛ; СЕМЕННОЙ МАТЕРИАЛ]. ВСХОЖЕСТЬ
(Germinability). ПРОРАСТАНИЕ (Germination). МАССА (Mass).
ГЛУБИНА ЗАДЕЛКИ. ТЕМПЕРАТУРА (Temperature). ФРАНЦИЯ
^РТЗ: AMBROSIA. ASTERACEAE [COMPOSITAE; АСТРОВЫЕ;
СЛОЖНОЦВЕТНЫЕ]. ASTERALES [АСТРОЦВЕТНЫЕ]. АБИОТИЧЕСКИЕ
ФАКТОРЫ. АГРОТЕХНИКА (Cultivation) [ВОЗДЕЛЫВАНИЕ].
БИОЛОГИЧЕСКОЕ РАЗВИТИЕ (Biological development). ЕВРАЗИЯ
(Eurasia). ЕВРОПА (Europe). ЗАДЕЛКА (Incorporation)
[ЗАПАШКА]. ЗАПАДНАЯ ЕВРОПА (Western Europe). КАЧЕСТВО
СЕМЯН (Seed quality) [КАЧЕСТВО СЕМЕННОГО МАТЕРИАЛА].
КАЧЕСТВО (Quality). ОКРУЖАЮЩАЯ СРЕДА (Environment).
ОНТОГЕНЕЗ (Ontogenesis; Ontogeny) [ИНДИВИДУАЛЬНОЕ
РАЗВИТИЕ]. ПЕРИОДЫ ОНТОГЕНЕЗА. ПОСЕВНЫЕ КАЧЕСТВА.
СВОЙСТВА. СРЕДИЗЕМНОМОРЬЕ [СТРАНЫ СРЕДИЗЕМНОМОРЬЯ].
СТРАНЫ ЕС. СТРАНЫ МИРА. ФАЗЫ РАЗВИТИЯ РАСТЕНИЙ (Plant
developmental stages) [ФЕНОЛОГИЧЕСКИЕ ФАЗЫ; ФЕНОФАЗЫ].
ФАКТОРЫ ОКРУЖАЮЩЕЙ СРЕДЫ (Environmental factors)
[ПРИРОДНАЯ СРЕДА; ЭКОЛОГИЧЕСКИЕ ФАКТОРЫ]. ФИЗИЧЕСКИЕ
СВОЙСТВА (Physical properties). ФИЗИЧЕСКИЕ ФАКТОРЫ.