Comparison of Morphological and Anatomical Characteristics of Taxus chinensis *** Seedlings Root under Waterlogging Stress in Different Substrates
作者机构：College of Horticulture and GardeningYangtze UniversityJingzhou434025China
出 版 物：《Phyton-International Journal of Experimental Botany》 (国际实验植物学杂志（英文）)
年 卷 期：2021年第90卷第6期
页 面：1673-1684页
核心收录：
学科分类：0710[理学-生物学] 08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程]
基 金：This work was supported by the National Natural Science Foundation of China[Grant No.31270740]
主 题：Waterlogging stress Taxus chinensis var.mairei root morphological anatomy
摘 要：Four different ratios of river sand,ceramic pellets,vermiculite and perlite(1:1),and field soil were selected as the substrates in this experiment,and four gradient levels of root waterlogging,half waterlogging,full waterlogging and normal were set to investigate the effects of different gradients of waterlogging stress on the root morphology of Taxus chinensis *** seedlings under different *** this study,the root anatomical structure of Taxus chinensis *** under different waterlogging stress was observed by the paraffin section *** roots of *** *** were diarch,with no pith and resin *** was a large number of tannins in the pericycle of the aerial adventitious roots of seedlings adapted to ***,the endodermis has obvious casparian strip thickening,and there were 4-5 layers of large parenchymatous cells in the close to the inner side of the pericycle in the vascular cylinder,which could increase the storage capacity,and transport capacity of the *** the treatment of root waterlogging stress,the development of plant roots in the mixed substrate of vermiculite and,perlite was the *** half waterlogging stress,*** *** seedlings treated with various substrates all could better adapt to the environment of waterlogging *** the stress of fully waterlogging,the roots of seedlings planted in river sand substrate developed secondary growth.
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