Definition of dichogamy in English:

dichogamy

noun dʌɪˈkɒɡəmidīˈkäɡəmē

mass nounBotany

The ripening of the stamens and pistils of a flower at different times, so that self-fertilization is prevented.
〔植〕雌雄（蕊）异熟。比较HOMOGAMY （义项 3）
Compare with homogamy (sense 3)
Example sentencesExamples
- This suggests that weak dichogamy occurs in this species unless stigma maturation is delayed by the retention of self-pollen.
- Flowering plants have several mechanisms that have evolved to prevent self-fertilization, e.g. self-incompatibility systems, heterostyly and dichogamy.
- However, the form of dichogamy (protogyny and protandry) is likely to have different consequences for autogamy versus geitonogamy.
- Although dichogamy is considered an important factor influencing gender expression, its roles in promoting the evolution of gender specialization are still poorly understood.
- However, if flowering is asynchronous and the behaviour of individual pollinators does not follow a regular pattern within a plant, dichogamy might have little effect on reducing geitonogamy.

Derivatives

dichogamous

adjective

Botany

Flowers are unisexual, dichogamous in nature and, thus, most species are open-pollinated.
Example sentencesExamples
- This is despite a large, showy floral display and the dichogamous system of the species.
- The breeding system of the dichogamous hermaphrodite species Silene acutifolia, endemic to north-west Spain and north and central Portugal, is examined.
- Darwin deduced that the first flowers to open sometimes aborted because they were of no use in dichogamous hermaphrodite plants.

Origin

Mid 19th century: from Greek dikho- 'apart, in two' + gamos 'marriage'.

Definition of dichogamy in US English:

dichogamy

noundīˈkäɡəmē

Botany

The ripening of the stamens and pistils of a flower at different times, so that self-fertilization is prevented.
〔植〕雌雄（蕊）异熟。比较HOMOGAMY （义项 3）
Compare with homogamy (sense 3)
Example sentencesExamples
- Flowering plants have several mechanisms that have evolved to prevent self-fertilization, e.g. self-incompatibility systems, heterostyly and dichogamy.
- However, if flowering is asynchronous and the behaviour of individual pollinators does not follow a regular pattern within a plant, dichogamy might have little effect on reducing geitonogamy.
- Although dichogamy is considered an important factor influencing gender expression, its roles in promoting the evolution of gender specialization are still poorly understood.
- However, the form of dichogamy (protogyny and protandry) is likely to have different consequences for autogamy versus geitonogamy.
- This suggests that weak dichogamy occurs in this species unless stigma maturation is delayed by the retention of self-pollen.

Origin

Mid 19th century: from Greek dikho- ‘apart, in two’ + gamos ‘marriage’.

单词	dichogamy
释义	Definition of dichogamy in English: dichogamy noun dʌɪˈkɒɡəmidīˈkäɡəmē mass nounBotany The ripening of the stamens and pistils of a flower at different times, so that self-fertilization is prevented. 〔植〕雌雄（蕊）异熟。比较HOMOGAMY （义项 3） Compare with homogamy (sense 3) Example sentencesExamples This suggests that weak dichogamy occurs in this species unless stigma maturation is delayed by the retention of self-pollen. Flowering plants have several mechanisms that have evolved to prevent self-fertilization, e.g. self-incompatibility systems, heterostyly and dichogamy. However, the form of dichogamy (protogyny and protandry) is likely to have different consequences for autogamy versus geitonogamy. Although dichogamy is considered an important factor influencing gender expression, its roles in promoting the evolution of gender specialization are still poorly understood. However, if flowering is asynchronous and the behaviour of individual pollinators does not follow a regular pattern within a plant, dichogamy might have little effect on reducing geitonogamy. Derivatives dichogamous adjective Botany Flowers are unisexual, dichogamous in nature and, thus, most species are open-pollinated. Example sentencesExamples This is despite a large, showy floral display and the dichogamous system of the species. The breeding system of the dichogamous hermaphrodite species Silene acutifolia, endemic to north-west Spain and north and central Portugal, is examined. Darwin deduced that the first flowers to open sometimes aborted because they were of no use in dichogamous hermaphrodite plants. Origin Mid 19th century: from Greek dikho- 'apart, in two' + gamos 'marriage'. Definition of dichogamy in US English: dichogamy noundīˈkäɡəmē Botany The ripening of the stamens and pistils of a flower at different times, so that self-fertilization is prevented. 〔植〕雌雄（蕊）异熟。比较HOMOGAMY （义项 3） Compare with homogamy (sense 3) Example sentencesExamples Flowering plants have several mechanisms that have evolved to prevent self-fertilization, e.g. self-incompatibility systems, heterostyly and dichogamy. However, if flowering is asynchronous and the behaviour of individual pollinators does not follow a regular pattern within a plant, dichogamy might have little effect on reducing geitonogamy. Although dichogamy is considered an important factor influencing gender expression, its roles in promoting the evolution of gender specialization are still poorly understood. However, the form of dichogamy (protogyny and protandry) is likely to have different consequences for autogamy versus geitonogamy. This suggests that weak dichogamy occurs in this species unless stigma maturation is delayed by the retention of self-pollen. Origin Mid 19th century: from Greek dikho- ‘apart, in two’ + gamos ‘marriage’.
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