| 词汇 | example_english_self-pollination |
| 释义 | Examples of self-pollinationThese 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. This means that pollen transferred within a patch contributes to geitonogamous self-pollination. The possibility of an increase in abortive self-pollination in small or isolated populations cannot be ruled out as seed set was not quantified. We also show that self-pollination can lead to self-fertilization because over 70% of inflorescences hand-pollinated with self-pollen set seeds. Thus, with limited self-pollination and mostly stable wind conditions, piassava appears to require the service of flower-visiting insects for pollen movement. Sporadically, in certain environments, the male and female flowers of different plants open at the same time, and since plantations consist of only one clone, self-pollination occurs. Photos of flowers, taken at 60-min intervals during the night, showed no indication of an adaptive self-pollination mechanism achieved through the movement of floral parts. The flowers are usually pollinated by moths (hence the common name of the plant), butterflies and bees (entomophily), but they are capable of automatic self-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hibiscus breeders do not preclude the possibility of self-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If a being dependent on pollinating agents allows self-pollination to occur when bees and wind are nowhere to be found. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Crop breeding includes techniques such as plant selection with desirable traits, self-pollination and cross-pollination, and molecular techniques that genetically modify the organism. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Much of the seed production comes from self-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An analysis of the genome-wide pattern of linkage disequilibrium suggested that self-pollination evolved roughly a million years ago or more. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is not the same as self-pollination, despite the common claim that tomatoes do so. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One mechanism that limits self-pollination is that of self-incompatibility by which seeds are only produced by pollination from other plants. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. But the more ramets the larger the share of the pollen is lost depending on ineffective self-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Whereas crossed pollination is more efficient in producing seeds, self-pollination will still produce seeds, allowing the plant to propagate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some orchids mainly or totally rely on self-pollination, especially in colder regions where pollinators are particularly rare. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It should not be confused with genetically controlled physical or temporal mechanisms that prevent self-pollination, such as heterostyly and sequential hermaphroditism (dichogamy). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some plants use the control of pollen germination as a way to prevent this self-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The flowers, which depending on species are 3-10 centimeters in diameter, are dramatic and have an elaborate design which prevents self-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This keeps them away from the stigma, avoiding self-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Geitonogamous self-pollination must therefore occur more often in this species than cross-pollination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If it does occur, protandry does nothing to prevent geitonogamous self-pollination: that is, pollination with pollen from another flower on the same plant. 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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