cleistogamous

Học thuật
Thân thiện
cleistogamous

A small violet plant has both open flowers and cleistogamous flowers that never open.

Definition
  1. Adjective:
    • Exhibiting or relating to cleistogamy: Describes a plant, flower, or the condition of having flowers that do not open and are self-pollinating within the closed bud.
Usage
  • The term is used specifically in botany to describe a reproductive strategy in certain plants.
  • It is typically used attributively (before a noun) to modify words like , , or .
  • It describes a permanent or habitual characteristic of a plant's flowers.
Examples
  • Adjective:
    • Some violet species produce both open, insect-pollinated flowers and smaller, cleistogamous flowers that never open.
    • The cleistogamous nature of these plants ensures seed production even in poor environmental conditions.
    • Researchers studied the genetic differences between the chasmogamous and cleistogamous forms of the same grass species.
Advanced Usage

  • "Obligately cleistogamous": A term used for plant species that produce only closed, self-pollinating flowers and never produce open flowers.

    • The rare ground orchid is obligately cleistogamous, relying entirely on self-fertilization.

  • "Facultatively cleistogamous": Describes plants that can produce both cleistogamous flowers and open (chasmogamous) flowers, often depending on environmental factors like light or temperature.

    • This common lawn weed is facultatively cleistogamous, producing closed flowers when it is shaded.
Variants and Related Words

  • Cleistogamy (n): The condition or process of self-pollination within unopened flowers.

    • Cleistogamy is an adaptation for reliable seed set.

  • Cleistogamously (adv): In a cleistogamous manner.

    • The species reproduces cleistogamously under stress.

  • Chasmogamous (adj): The antonym; describing flowers that open fully to allow for cross-pollination.

    • The primary, showy blooms are chasmogamous, while the later, hidden flowers are cleistogamous.
Synonyms
  • Self-pollinating (within a closed bud): A descriptive synonym emphasizing the mechanism.
  • Cleistogamic: A less common variant adjective with identical meaning.
Related Concepts
  • Autogamy: Self-fertilization, a broader term that includes cleistogamy as one form.
  • Reproductive assurance: The ecological advantage of cleistogamy, guaranteeing seed production without pollinators.
cleistogamous

A small violet plant has both open flowers and cleistogamous flowers that never open.

Adjective
  1. exhibiting or relating to cleistogamy

Từ đồng nghĩa