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最原始的花长什么样

2017-08-10 05:33:21   中国青年网

埃尔韦·索凯 于尔克·舒思伯格绘图

【科普小博士】

被子植物,也就是开花植物,大约占地球上所有植物种类的90%。科学家认为它们都起源于一种生活在1亿4千万年前的古老植物。但被子植物和它们独特的结构——花的起源和早期演化一直没有被完全理解,而有关花朵的化石记录也非常有限,这让科学家必须从其他途径研究花朵演化。

巴黎十一大学的科学家埃尔韦·索凯和于尔克·舒恩伯格等将花朵演化模型与一个巨大的现存植物特征数据库联系起来,重现了古代被子植物花朵的特征和多样化。他们的重建图像显示古代花朵同时具有雌性和雄性部分,以及多轮三层为一组的花瓣结构。

这一成果发表在《自然-通讯》上。虽然最原始的花的某些特征仍旧不明确,但科学家们表示这次数据重建提出了花朵早期多样化的一种新可能,并为科学家研究被子植物提出新的可测试假设。

(作者:柯济)

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