نتایج جستجو برای: daffodil
تعداد نتایج: 100 فیلتر نتایج به سال:
<span>Just after the invention of electricity by Michael Faraday, there has been a revolution in communication technology, which lead to radio, television, radar, satellite, and mobile. While these machines transformed our life high quality, safer simpler, they have associated with alarming probable health hazards owing their electromagnetic radiation (EMR) emission. Couple cases it repor...
Purpose. Ensuring standard education through internationalization since it is a big concern in academic institutions all over the globe. The goal to equip and introduce students educators worlds innovations globalization at tertiary level of improve & ensure quality for upgrade quality. Methodology. An evaluative expository study conducted on Daffodil International University (DIU), regardi...
Although chromoplasts and chloroplasts are mor phologically and functionally very different, it has been shown in certain plants and under certain con ditions, that they are interconvertible [see 1 5]. One could then expect such plastids to contain, at least qualitatively, the same plastome. It appears questionable, however, whether this applies to all plastid types. For example, FreyWyssling...
Geographic variation in floral morphology and style-morph ratios in a sexually polymorphic daffodil.
Narcissus triandrus is a tristylous daffodil from the Iberian Peninsula that has striking geographical variation in floral morphology and style-morph ratios. Here, we investigate the relation between this variation and ecological factors to understand mechanisms governing morph ratios. We estimated morph ratios in 124 populations throughout the range of N. triandrus and measured 13 morphologica...
Non-random mating in plant populations can be influenced by numerous reproductive and demographic factors, including floral morphology and inter-plant distance. Here, we investigate patterns of outcrossed mating through male function in Narcissus triandrus, a tristylous, bee-pollinated wild daffodil from the Iberian Peninsula, to test pollen transfer models which predict that floral morphology ...
BACKGROUND AND AIMS Floral design in self-compatible plants can influence mating patterns. This study investigated Narcissus longispathus, a self-compatible bee-pollinated species with wide variation in anther-stigma separation (herkogamy), to determine the relationship between variation in this floral trait and the relative amounts of cross- and self-fertilization. METHODS Anther-stigma sepa...
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