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germination like curling of pollen tubes, shrinkage of pollen tube tips and bending of pollen tube might be reasons of sexual incompatibility of this species. It is observed that the taxa ...
of the micropylar region. ZmPMEI1–EGFP fusion protein is transported within granules inside the tube and accumulates at the pollen tube tip as well as at sites where pollen tubes bend and/or change growth directions ...
Oliver. corolla of tbe ray florets begins to curl up like a watch spring and when about half the corolla is twisted all the ray florets bend over and cover tbe disc, thus initiating the fruiting ...
An estimated 10% of flowering plant species conceal their pollen within tube- like anthers that dehisce through small apical pores (poricidal anthers). Bees extract pollen from poricidal anthers ...
the stamens bend down and the style elongates. In the Lamiaceae, subfamily Ocimoideae, it seems likely that an explosive mechanism has evolved at least twice. ...
The mature pollen of Papaver dubium is bicellular. The exine is composed of a nexine, bacula and a perforated tectum. The vegetative cell contains numerous mitochondria, small vesicles and ribosomes ...
An estimated 10% of flowering plant species conceal their pollen within tube- like anthers that dehisce through small apical pores (poricidal anthers). Bees extract pollen from poricidal anthers ...
. It then crawls higher to reach the nectary, and in doing so bends down the stamens—which are also coloured like the corolla—until the anthers strike against the under part of the insect's body. The pollen thus ...
Bees and flowers have an intricate relationship which benefits both organisms. Plants provide nectar bees, in turn, distribute pollen to fertilize plants. To make pollination work, flowers need ...
Thin walled tubes are often used for load-bearing structures, in nature and in engineering, because they offer good resistance to bending and torsion at relatively low weight. However, when loaded ...
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