Difference Between Microsporogenesis and Microgametogenesis

Key Difference – Microsporogenesisvs微术发生

生殖单元被子植物is the flower. A flower consists of two reproductive units;androecium and gynoecium。雄蕊是男性生殖单位同时the gynoecium is the female reproductive unit. The androecium contains anther and filament and the gynoecium contains stigma, style, and ovary. Microsporogenesis and microgametogenesis take place in the anther of the androecium.微量生成is the process of formation ofpollen grains（微孢子）来自孢子组织和微术发生是从生成细胞形成的雄配子的过程nucleusthat is present inside the pollen grain through有丝分裂。This is thekey differencebetween Microsporogenesis and Microgametogenesis.

内容

1.Overview and Key Difference
2.What is Microsporogenesis
3.What is Microgametogenesis
4.Similarities Between Microsporogenesis and Microgametogenesis
5.Side by Side Comparison – Microsporogenesis vs Microgametogenesis in Tabular Form
6。概括

What is Microsporogenesis?

微量生成is a process that takes place during plant reproduction. As a general fact, during this process, a microgametophyte develops inside a pollen grain. This development takes place in a three-celled stage. With regards to flowering plants; angiosperms, the microsporogenesis process takes place with the involvement of a microspore mother cell. The microspore mother cell is present in the anther of the flower, which is one of the two segments of the androecium (male reproductive unit of the angiosperm flower).

在横截面检查下，花药出现两个不同的裂片。每个叶由两个微孢子囊（thecae）组成。单个花药由04个微孢子囊组成。每个微型携带物中有4个肥沃的细胞层。他们（从外部到内部），epidermis，Endothecium，中层和tap。这些细胞被称为孢子源细胞。最大的层，即tapeTum，由无菌细胞组成。tapeTum的功能是为开发花粉颗粒提供营养。

发展成小孢子母细胞的其他三种类型的孢子源细胞是二倍体（2N）。这些微孢子的母细胞也称为微孢子细胞。这些微孢子细胞经历减数分裂分裂，成为单倍体（n）的四（04）微孢子细胞。管细胞和生成细胞是通过这些单倍体微孢子细胞的有丝分裂分裂而开发的。

什么是微型试验？

微型试验发生is a process by which progressive development of the unicellular microspores takes place where they get developed to mature microgametophytes containing gametes. The development phase of microspores takes place with the onset of expansion of microspore. In this phase, a single large vacuole is produced within the microspore cell. The formation of the vacuole results in the movement of the nucleus of the microspore to an eccentric position. The displacement of the nucleus occurs against the wall of the microspore cell. At this position within the cell, the nucleus undergoes mitosis.

This mitotic division is referred to as pollen mitosis I (first pollen mitosis). Here, through this division, 4 different cells are produced. They include two unequal cells, a small generative cell, and a large vegetative cell. These cells contain a haploid nucleus. The generative cell will get detached from the wall of the pollen grain. The fate of the generative cell is decided by the large vegetative cell that engulfs it. This results in the development of a unique structure that is a cell within a cell. The engulfed generative cell the mitotically divides. This division is referred to as pollen mitosis II (second pollen mitosis). The result of this mitotic division is the or two male gametes.

What are the Similarities Between Microsporogenesis and Microgametogenesis?

• 微生物发生和微型酯发生过程都发生在被子植物的内部。
• Both Microsporogenesis and Microgametogenesis involve haploid cell formation.
• During microsporogenesis and megasporogenesis, spores that give rise togametophytesare produced.

微孢子形成和微型试验之间有什么区别？

微量生成vs微术发生
微量生成is the process of formation of pollen grains (microspores) from the sporogenous tissue.	微型试验发生is the process of formation of male gametes from the generative cell nucleus that is present inside the pollen grain through mitosis.
Location of Development
Microsporangium is the place where microsporogenesis occurs.	巨型孢子虫是发生微术发生的地方。
功能
花粉的产生是微量生成的结果。	Production of male gametes is the outcome of microgametogenesis.

摘要 - 微型生成vs微术发生

微量生成是从孢子组织形成花粉颗粒（微孢子）的过程。一般来说，在此过程中，微聚植物在花粉谷物内形成。这种发展发生在三阶段。微型术发生是一个过程，通过该过程进行单细胞微孢子的逐步发展，在此过程中，它们被开发成成熟的微摄影植物，其中包含配子。发生了两种类型的有丝分裂分裂；花粉有丝分裂I和花粉有丝分裂II。花粉有丝分裂I的结果是两个不等的细胞，一个小的生成细胞和一个大的营养细胞。花粉有丝分裂II的结果是形成两个精子细胞。这是微孢子形成和微术发生之间的差异。

Reference:

1.“药植物存档。”微孢子形成和微术生成 - 花粉颗粒。Available here
2.Tang，YA等。“ exentrodendron hsienmu（Malvaceae S.L.）及其系统含义的微生物生成和微磨术发生。”Linnean Society植物学杂志，第1卷。150，不。4，2006，第447–457页，doi：10.1111/j.1095-8339.2006.00476.x

Image Courtesy:

1.’Angiosperm life cycle diagram-en’By LadyofHats Mariana Ruiz – Own work, (Public Domain) viaCommons Wikimedia