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Invariables and Variables in the Evolution of Plant Reproduction
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Version 1
: Received: 27 October 2023 / Approved: 27 October 2023 / Online: 30 October 2023 (11:55:44 CET)
How to cite: Wang, X. Invariables and Variables in the Evolution of Plant Reproduction. Preprints 2023, 2023101931. https://doi.org/10.20944/preprints202310.1931.v1 Wang, X. Invariables and Variables in the Evolution of Plant Reproduction. Preprints 2023, 2023101931. https://doi.org/10.20944/preprints202310.1931.v1
Abstract
Land plants have undergone their great diversification and evolution in the past 400 million years. Although appearing complex and hard to grasp, the evolution of plants centers around an invariable core development process, SRC (Sexual Reproductive Cycle). Various modifications have been added sequentially to this core process, and thus creating various novel organs and distinguishing their bearers one from another. Reproductive organs of all land plants, including sporangium, megasporangium, metamegasporangium (= ovule), and various metamegasporangium complexes, are derived from terminal sporangia in the earliest land plants. Throughout the million-year-long evolution, plants sequentially recruit associating accessories to protect their vulnerable core parts (spore and gamete). The occurrence of every single of these novelties is a stair marking land plant reproduction evolution and leads to enhanced offspring development conditioning (ODC).
Keywords
plants; reproduction; evolution; ovules; flowers
Subject
Biology and Life Sciences, Plant Sciences
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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