| 词汇 | self-pollination |
| 释义 | self-pollination noun[ U ] biology specializeduk /ˌself.pɒl.əˈneɪ.ʃən/ us /ˌself.pɑː.ləˈneɪ.ʃən/ the process by which pollen from the male part of a flower is carried to the female part of the same flower or to another flower of the same type自花授粉 Plant reproduction anther asexual reproduction asexuality asexually barrenness breeder chasmogamous endosperm germinate palynology pistillate placentation pollinate pollination self-fertilize self-incompatible sexlessly siltation sporangium stamen self-pollination | American Dictionaryself-pollination noun[ U ] us/ˈselfˌpɑl·əˈneɪ·ʃən/ biology the process by which pollen from the male part of a flower is carried to the female part of the same flower or to another flower of the same type Examples of self-pollinationself-pollination 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. See all examples of self-pollination 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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