| 词汇 | anther |
| 释义 | anther noun[ C ] uk /ˈæn.θər/ us /ˈæn.θɚ/ the part of a flower that contains pollen（雄蕊的）花药，花粉囊 Jacky Parker Photography/Moment/GettyImages Plant reproduction asexual reproduction asexuality asexually barrenness breeder chasmogamous endosperm germinate palynology pistillate placentation pollinate pollination self-fertilize self-incompatible self-pollination sexlessly siltation stamen wind pollination You can also find related words, phrases, and synonyms in the topics: Flowers - general words Examples of antheranther We found strong positive correlations between anther height and corollatube length in both morphs. Strong positive correlations (r > 0.9) between anther height and corolla-tube length were found in both morphs. For anther height, and anther length, we measured the mean value for three anthers in each flower. A plant was considered as having reached anthesis or silking if at least one extruded anther or one silk was visible. Before being released from the anther, the pollen grain usually becomes desiccated and enters in a phase of stasis. The insects touched stigmas and anthers when collecting pollen and nectar. The electron-dense inclusions in the outer layer of the intine of pollen at the open anther stage are probably remnants of the degraded cytoplasmic channels. The stamens have a rigid filament and a length that places the anthers beyond the tube of the corolla precisely under its upper lip. The stigma extends beyond the anthers by a couple of millimetres allowing both hummingbird groups to deposit pollen. Flowers were emasculated by removing the anthers before anthesis in the early evening. The pollen sacs are confused with anthers and the term ' petiole ' is used for flower stalk which should be ' pedicel'. They almost always contacted the stigma and anthers, and were classified as pollinators. Corolla-tube length (a), anther height (b), stigma height (c), corolla-lobe length (d), stigma-lobe length (e), and anther length (f) were measured. In order to collect pollen, adults scrape anthers with the proboscis and gather the grains. This floral structure may act as a developmental constraint and generate positive anther- corolla correlations. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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