Arrangement of microspores in a tetrade is isobilateral shaped The mature pollen grain is 3-celled type, the sperms are crescent shaped.

  • 小孢子在四分体中的排列为等面形。成熟花粉粒为3细胞型,精子为新月形。

  • 互联网摘选 2025-01-20 19:08:26

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