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对Hibiscus syriacus L.种子流产的胚胎学观察和对营养素,酶活性和内源性激素的生理学研究

Xiaohong Wang^1,2, Jiajia Chen^3,4, Lingxuan Hu³

¹College of Landscape Architecture, Central South University of Forestry & Technology, Changsha, 410004, China. t19960222@csuft.edu.cn.

BMC plant biology

|December 22, 2023

概括

希比斯克斯 (Hibiscus syriacus L.) 的种子产量很低,因为其自然发芽能力很低. 这项研究确定了花粉管异常和胚胎流产是阻碍种子发育的关键发育和生理原因.

科学领域:

植物生殖生物学植物生殖生物学
植物生理学植物生理学
园艺科学园艺科学

背景情况:

雪龙 (Hibiscus syriacus L.) 具有宝贵的生殖质,但其种子产量低,种子质量差.
种子生产的现有挑战限制了这种装饰植物遗传资源的有效利用.

研究的目的:

调查导致Hibiscus syriacus L.种子流产的发育和生理因素.
了解种子产量低和这种物种发芽能力低的原因.

主要方法:

在解剖过程中评估了花粉活性和污名感受性.
在自我授粉和交叉授粉后观察到花粉管的发展.
监测胚胎发育阶段的异常情况.
进行了生物化学分析,以评估种子发育过程中的激素水平和抗氧化酶活性.

主要成果:

花粉释放和耻辱感受性是同步的,有肥沃的和茎.
在自我和交叉授粉中都观察到花粉管异常和质沉积,但在交叉授粉中不那么严重.
胚胎流产发生在心形阶段,可能与抗氧化酶失衡和低辅酶/细胞因素水平有关.
诸如营养缺乏,抗氧化活性变化和高酸水平等生理因素导致了后期的种子流产.

结论:

低的外交率和发育中期胚胎流产是H.syriacus种子流产的重要发育原因.
营养素缺乏,抗氧化酶失衡和酸升高是导致种子流产的关键生理原因.
解决这些发育和生理问题对于改善希比斯库斯 (Hibiscus syriacus) 种子产量和质量至关重要.

关键词:

胚胎发育的发展希比斯克斯西里亚克斯L. L. 希比斯克斯西里亚克斯种子堕胎是一种堕胎.种子设定利率种子设定利率

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