Results 141 to 150 of about 3,583 (178)
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Extrafloral nectar secretion from wounds of Solanum dulcamara
Nature Plants, 2016Plants usually close wounds rapidly to prevent infections and the loss of valuable resources such as assimilates(1). However, herbivore-inflicted wounds on the bittersweet nightshade Solanum dulcamara appear not to close completely and produce sugary wound secretions visible as droplets.
Tobias Lortzing +8 more
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1982
Nectar is a sugar-rich solution transported from the phloem, through a specialized nectary tissue, to the outside of the plant.
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Nectar is a sugar-rich solution transported from the phloem, through a specialized nectary tissue, to the outside of the plant.
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Effects of Herbicides on Nectar Secretion
Journal of Apicultural Research, 1964SUMMARYApplications of 2,4-D in amounts lethal to the plant inhibited nectar secretion in poinsettias (Euphorbia pulcherrima), usually within two days. Applications of amitrole did not inhibit nectar secretion, and the nectar contained a normal amount of total sugars.The nectar secreted by plants treated with 2,4-D contained an auxin-like substance ...
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Intrapopulation variation in nectar secretion in Impatiens capensis
Oecologia, 1984Variation in nectar secretion rates within a population of Impatiens capensis was examined. There was no evidence for phenotypic variation between plants in nectar secretion rates. There was significant daily variation in secretion rates, which appeared to be caused by environmental factors.
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Nectar Storage in Relation to Wax Secretion by Honeybees
Journal of Apicultural Research, 1988SummaryExperiments were performed to assess nectar forage and the availability of empty combs as well as free building space within the nest cavity in relation to wax secretion. There was a positive correlation between engorgement of the honey stomach and wax secretion.
H. R. Hepburn, P. C. Magnuson
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ULTRASTRUCTURE OF NECTARIES IN RELATION TO NECTAR SECRETION
American Journal of Botany, 1979In the last 15–20 years, ultrastructural studies have added new important cytological information to the relatively rich literature on the morphology and light microscopy of nectaries. On the basis of these studies, the following main conclusions can be drawn regarding the relation between the ultrastructure of nectaries and the process of nectar ...
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Nectar Secretion of the Tuliptree or Yellow Poplar
Journal of Economic Entomology, 1933Because of the large amount of nectar flow observed from the tuliptree (Lirodendron tulipifera) , an experiment was undertaken to determine the quantity of nectar secreted per blossom and the sugar content of this nectar. The average weight of nectar secreted by one flower was 1.6417 grams.
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Nectar secretion in excised flowers. VI. Relationship of secretion to protein metabolism
Canadian Journal of Botany, 1978The relationship of nectar secretion in snapdragon to protein metabolism, and the influence on both processes of indoleacetic acid (IAA) and to a lesser extent pollination, were both studied. Indoleacetic acid at 5 × 10−4 M appeared to initiate a reorganization in the nectary which led to the stimulation of growth and an early termination of secretion.
R. W. Shuel, W. Tsao
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The timing of nectar secretion in staminal and staminodial glands in Lauraceae
Plant Biology, 2009AbstractThe flowers of many Lauraceae have two kinds of glandular organ: paired glands at the base of the filaments of the third androecial whorl, and staminodes with a glandular head, corresponding to a fourth, sterile androecial whorl. So far, it is unknown why there are two different kinds of organ with apparently the same function. Observations now
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Effect of zinc on nectar secretion of Hibiscus rosa-sinensis L
Protoplasma, 2013Zinc toxicity in secretory cells caused a range of effects, mainly depending on metal concentration. Low concentrations activated nectary function increasing nectar secretion but secretion was greatly inhibited or stopped entirely by ongoing concentration.
Thomas, Sawidis +2 more
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