基于响应面分析法探究盐地碱蓬叶色表型的影响因素

打开文本图片集

中图分类号：S681.901 文献标志码：A 文章编号：1004-390X（2025）04-0120-07

Abstract： [Purpose] To investigate the main factors affecting the leaf color variation of Suaeda salsa in the Liaohe Estuary. [Methods] Using Box-Behnken response surface design， three types of substrates （sea sand，loam，and sea mud） with different compactness levels were set up，combined with 0，100，and 30O mmol/L NaCl treatments，for a total of 17 pot treatments， with three replicates for each treatment. The affecting factors of S. salsa leaf color phenotype were analyzed by observing substrate particles under scanning electron microscope and determining the contents of total chlorophylland betacyanin in leaves. [Results]NaCl concentration significantly affected the contents of total chlorophyll and betacyanin， while substrate type and compactness had minimal effects on pigment accumulation. However， under high salinity condition， sea mud and low compactness substrates favored betacyanin accumulation. [Conclusion] Salinity is the main factor aecting the leaf color variation of S. salsa.High salinity promotes betacyanin accumulation and inhibits chlorophyll synthesis， while the substrate type and compactness play secondary regulatory roles in pigment distribution.

Keywords： Suaeda salsa; substrate; response surface; salinity; betacyanin

盐地碱蓬（Suaedasalsa）是一种生长在盐碱地环境中的1年生草本植物，隶属于藜科（Chen-opodiaceae）碱蓬属（Suaeda）。（剩余9911字）