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血管精子花在它们的进化历史上很早就达到了最高的形态多样性

Andrea M López-Martínez^1,2, Susana Magallón², Maria von Balthazar³

¹Posgrado en Ciencias Biológicas, Instituto de Biología, Universidad Nacional Autónoma de México, 3er Circuito de Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, Mexico.

The New phytologist

|November 29, 2023

概括

开花植物 (花) 的花多样性在白纪早期达到顶峰. 这种花的进化,虽然减少了差异,但并没有阻碍其他复杂的特征的发展,这些特征有助于血管种物种的丰富.

科学领域:

植物学植物学
进化生物学进化生物学
古生物学的古生物学

背景情况:

鲜花是开花植物 (芽植物) 中的关键繁殖结构,与它们的物种化和多样化密切相关.
了解花的形态多样性 (不平等性) 提供了对血管苗的进化历史的见解.

研究的目的:

量化跨血管精子子群和跨时间的花差异.
探索花进化的模式及其与血管精子多样化的关系.

主要方法:

利用了来自1201种现存和121种化石花的30种花结构特征的数据集.
测量了花差异,并分析了跨血统和地质时间的进化趋势.

主要成果:

在白纪早期,芽植物的花差异最大.
如今,花的差异已经减少,但这并没有阻碍其他复杂特征的演变.
雄种类占据了理论形态空间的不同区域,早期的血统表现出比嵌套群更大的差异.

结论:

这项研究揭示了花进化中的关键模式和血管种子内部的差异.
减少的花差异可能被其他特征的创新所补偿,推动了物种丰富.
观察到的花特征组合受到限制,这表明进化约束或选择性压力.

关键词:

甲时期的甲时期的旧世纪 (Paleogene) 是一个古老的时期.祖先状态重建 (ASR) 是指分类型的形态空间.时间间的差异.花的进化是因为花的进化.

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