منابع مشابه
A chemotaxonomic analysis of cannabinoid variation in Cannabis (Cannabaceae).
Cannabinoids are important chemotaxonomic markers unique to Cannabis. Previous studies show that a plant's dry-weight ratio of Δ(9)-tetrahydrocannabinol (THC) to cannabidiol (CBD) can be assigned to one of three chemotypes and that alleles B(D) and B(T) encode alloenzymes that catalyze the conversion of cannabigerol to CBD and THC, respectively. In the present study, the frequencies of B(D) and...
متن کاملIs the recent decrease in airborne Ambrosia pollen in the Milan area due to the accidental introduction of the ragweed leaf beetle Ophraella communa?
This study aims to determine whether a significant decrease in airborne concentrations of Ambrosia pollen witnessed in the north-west of the Province of Milan in Northern Italy could be explained by environmental factors such as meteorology, or whether there is evidence to support the hypothesis that the decrease was related to the presence of large numbers of the oligophagous Ophraella communa...
متن کاملEndocarp morphology of Iranian Celtis (Celtidaceae-Cannabaceae)
Endocarp morphology of 4 species of Iranian Celtis was examined using light and scanning electron microscopes. Macro- and micro-morphological characters were included endocarp shape, color, size, surrounding rim, ornamentation and SEM structure of the outer layer of the endocarp. Endocarp morphology of the examined specimens exhibit variation in all characters. Endocarp shape varies from globul...
متن کاملشمارش کروموزومی تیره توت (Moraceae) در ایران
شمارش کروموزومی 6 گونه از دو جنس توت (Morus) و انجیر (Ficus) از تیره توت ارائه شده است. برای بعضی از این گونه‌ها عدد کروموزومی منتشر نشده بود. این مجموعه شامل تمام گونه‌های موجود در ایران از شمال تا جنوب می‌باشد.
متن کاملUrticaceae pollen concentration in the atmosphere of North Western Spain.
Plants of the Urticaceae family can develop into a pest on soils enriched with nitrogen. Urticaceae pollen is a biohazard because it elicits severe pollinosis. Pollen grains were sampled by using a Lanzoni seven-day-recording trap from February 1995-December 2000 in the atmosphere of the city of Ponferrada (Leon, North Western Spain). The Spearman test was used to analyse the statistical correl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Review of Palaeobotany and Palynology
سال: 1984
ISSN: 0034-6667
DOI: 10.1016/0034-6667(84)90061-7