| 词汇 | wind-pollination |
| 释义 | wind pollination noun[ U ] biology specializeduk /ˈwɪnd ˌpɒl.ə.neɪ.ʃən/ us /ˈwɪnd ˌpɑː.lə.neɪ.ʃən/ the process in which the wind carries pollen (= powder produced by male part of flower) from one plant to another which is then fertilized风媒授粉 Plant reproduction anther asexual reproduction asexuality asexually barrenness breeder chasmogamous endosperm germinate palynology pistillate placentation pollinate pollination self-fertilize self-incompatible self-pollination sexlessly siltation stamen Examples of wind pollinationwind pollination However, observations and pollination experiments indicated a dual mode of beetle and windpollination for this palm species. Thus, odds ratios were estimated relative to fruit set for windpollination. Pollination treatments showed that windpollination was possible, but fruit set was significantly higher for female flowers visited by beetles. Insect visitors were unable to penetrate the windpollination bags. Since windpollination produced the fewest fruit it was used as the reference variable. This could be associated with windpollination, and a high likelihood of fertilization without the need for investment in floral advertising. However, given its occurrence in the understorey of closed canopy rain forest where wind is less prevalent and more obstructions are present, windpollination may have been unimportant. Windpollination: some ecological and evolutionary perspectives. The dryness and fact that it is easily released by movement makes it ideal for windpollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Surface pollination is more frequent, and appears to be a transitional phase between windpollination and true hydrophily. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The megasporangium has a multilobed integument, and there is an extension on the megasporangium that suggests an adaptation to windpollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. True grasses have evolved to become highly specialised for windpollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The flowers themselves are reduced and have many features associated with windpollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The seed cones are green, 612 cm long and 510 cm in diameter, and mature about 1820 months after windpollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Windpollination allows genetic information to cover large distances and hurdle reproductive barriers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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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