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microspore    
n. 小胞子

小胞子

microspore
n 1: smaller of the two types of spore produced in heterosporous
plants; develops in the pollen sac into a male gametophyte


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  • Microspore - Wikipedia
    The microspore divides by mitosis producing two cells The first of the cells (the generative cell) is small and is formed inside the second larger cell (the tube cell) The members of each part of the microspores separate from each other A double-layered wall then develops around each microspore
  • Microsporogenesis: Process, Stages, and Significance
    During microsporogenesis, all the sporogenous cells differentiate into microspore mother cells whereas during megasporogenesis, only one sporogenous cell differentiates into a megaspore mother cell
  • Microsporogenesis – Definition, Process, Structure, Importance
    Microsporogenesis is the development and maturation of microspores, the haploid progeny of pollen grains By means of meiosis, diploid microsporocytes (pollen mother cells) produce a tetrad of four haploid microspores, therefore guaranteeing genetic recombination and variation in this process
  • Microspore - an overview | ScienceDirect Topics
    Microspores, the immature precursors to pollen grains, result from the meiotic reductive pollen mother cell division in anthers Each microspore contains a haploid genome copy, a single chromosome set (n), and a unique allelic composition resulting from the genetic recombination of the parental genes
  • Microspore | plant anatomy | Britannica
    The microspore divides to form a reduced gametophyte, merely a jacket of cells and a few sperm cells; the megaspore divides to form a mass of tissue and archegonia, each enclosing an egg
  • Microspore: General Biology I Study Guide | Fiveable
    A microspore is a haploid spore that develops into a male gametophyte in seed plants and some other vascular plants These tiny spores are crucial for reproduction, as they give rise to pollen grains which carry the male gametes necessary for fertilization
  • Microspore Definition and Examples - Biology Online Dictionary
    In botany, a microspore refers to the spore produced by sporophytes It is haploid and gives rise to a male gametophyte Metagenesis or the alternation of generations involves the alternation of life phases in the life cycle of plants
  • Microspore embryogenesis: establishment of embryo identity and pattern . . .
    Here, we use the more commonly used term ‘microspore embryogenesis’ to refer to the in vitro culture of the immature male gametophyte, regardless of the developmental stage of the cells that form embryos
  • Microsporogenesis and Microspore (With Diagram) - Biology Discussion
    The pollen or the microspore is a very minute structure (0 025 to 0 125 mm in dia­meter) It is unicellular and usually round although it may be oval, pyramidal, polyhe­dral, etc





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