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词汇 sporophyte
释义

Definition of sporophyte in English:

sporophyte

nounˈspɔːrəfʌɪtˈspɒrəfʌɪtˈspôrəˌfīt
Botany
  • (in the life cycle of plants with alternating generations) the asexual and usually diploid phase, producing spores from which the gametophyte arises. It is the dominant form in vascular plants, e.g. the frond of a fern.

    〔植〕孢子体

    Example sentencesExamples
    • Gametophytes became sexually mature in 2 weeks and the first leaves of the sporophytes became visible in about 4 weeks.
    • Collected material consisted of sporophytes with sporangia present.
    • Placental morphology is remarkably diverse between major bryophyte groups, especially with regard to the presence and distribution of transfer cells in the sporophyte and gametophyte.
    • In maize, in particular, cell death events are known to occur throughout normal development both in the sporophyte and in the gametophyte.
    • The alternate phase of the plant life cycle is the sporophyte, the diploid plant form, with each cell containing two complete sets of chromosomes.

Derivatives

  • sporophytic

  • adjectivespɔːrəˈfɪtɪkspɒrəˈfɪtɪk
    Botany
    • In both species there are several layers of cells with labyrinthine walls (transfer cells) on both the sporophytic and gametophytic side of the placenta.
      Example sentencesExamples
      • Seed development requires co-ordinated expression of embryo and endosperm and is controlled by sporophytic, male gametophytic, and female gametophytic genes.
      • The Asteraceae family presents a sporophytic self-incompatibility system, although a partial breakdown of the incompatibility system has been found in several species.
      • Following germination, sporophytic embryo tissue was separated from surrounding female gametophytic tissue.
      • Self-incompatibility mechanisms have traditionally been found to operate in styles with either a sporophytic or gametophytic incompatibility system.
  • sporophytically

  • adverb-ˈfɪtɪk(ə)li
    Botany

Definition of sporophyte in US English:

sporophyte

nounˈspôrəˌfīt
Botany
  • (in the life cycle of plants with alternating generations) the asexual and usually diploid phase, producing spores from which the gametophyte arises. It is the dominant form in vascular plants, e.g. the frond of a fern.

    〔植〕孢子体

    Example sentencesExamples
    • Placental morphology is remarkably diverse between major bryophyte groups, especially with regard to the presence and distribution of transfer cells in the sporophyte and gametophyte.
    • In maize, in particular, cell death events are known to occur throughout normal development both in the sporophyte and in the gametophyte.
    • Collected material consisted of sporophytes with sporangia present.
    • The alternate phase of the plant life cycle is the sporophyte, the diploid plant form, with each cell containing two complete sets of chromosomes.
    • Gametophytes became sexually mature in 2 weeks and the first leaves of the sporophytes became visible in about 4 weeks.
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