نتایج جستجو برای: oenothera biennis
تعداد نتایج: 684 فیلتر نتایج به سال:
چکیده سابقه و هدف: گلمغربی (Oenothera biennis L.) گیاه دارویی مناطق معتدله بوده و بذرهای آن حاوی 30-20 درصد روغن میباشد. جوانهزنی و استقرار گیاهچه از عوامل تعیینکننده عملکرد و زمان رسیدگی در گیاهان میباشند. توابع دمایی مختلفی برای توصیف واکنش جوانهزنی به دما وجود دارد که از میان آنها سه تابع دوتکهای، بتا و دندانمانند بیشتر از بقیه مورد استفاده قرارمیگیرند. اگرچه تاکنون مطالعات زیادی د...
The researches of MORGAN on lethal factors, of BARTLETT on mass mutation, and of RENNER on empty seeds, have led me of late to the conception that lethal factors and hybrid mutants play a large part in the splitting phenomena which accompany the normal mutations of so many species of Oenothera. The question, which part of those phenomena may be explained by this view, has to be faced. The cross...
BACKGROUND The popularity of botanical products is on the rise in Europe, with consumers using them to complement their diets or to maintain health, and products are taken in many different forms (e.g. teas, juices, herbal medicinal products, plant food supplements (PFS)). However there is a scarcity of data on the usage of such products at European level. OBJECTIVE To provide an overview of ...
The model plant Oenothera has contributed significantly to the biological sciences and it dominated the early development of plant genetics, cytogenetics, and evolutionary biology. The great advantage of using Oenothera as a model system is a large body of genetic, cytological, morphological, and ecological information collected over more than a century. The Oenothera system offers a well-studi...
Beekeepers experience high annual losses of colonies, with environmental stressors like pathogens, reduced forage, and pesticides as contributors. Some factors, nutritional stress from flower abundance or diversity, are more pronounced in agricultural landscapes where extensive farming limits pollen availability. In addition to affecting other aspects colony health, quantity quality available i...
PREMISE OF THE STUDY Eleven nuclear and four plastid microsatellite markers were screened for two gypsum endemic species, Oenothera gayleana and O. hartwegii subsp. filifolia, and tested for cross-amplification in the remaining 11 taxa within Oenothera sect. Calylophus (Onagraceae). METHODS AND RESULTS Microsatellite markers were tested in two to three populations spanning the ranges of both ...
The spacer between the 16S and 23S rRNA genes of the chloroplast DNA has been implicated as an origin of replication in several species of plants. In the evening primrose, Oenothera, this site was found to vary greatly in size, with plastid genomes (plastomes) being readily distinguished. To determine whether plastome "strength" in transmission could be correlated with variation at oriB, the 16...
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