A Comparative Study of the Cellular Microscopic Characteristics and Mechanisms of Maize Seedling Damage from Superabsorbent Polymers

CHEN Xian; HUANG Lei; MAO Xiaoyun; LIAO Zongwen; Zhenli HE

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A Comparative Study of the Cellular Microscopic Characteristics and Mechanisms of Maize Seedling Damage from Superabsorbent Polymers

机译：高吸收聚合物对玉米幼苗细胞显微特性及损伤机理的比较研究。

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Superabsorbent polymers (SAPs) as soil moisture conditioners have been increasingly used in agriculture,but conflicting results were reported regarding the effects of SAPs on crop growth.In this study,both laboratory cultivation and analysis were conducted to investigate the effects of different SAPs on the growth and physiology of crops under water-saving agricultural practices.Maize (Zea mays L.)seedlings were cultivated using distilled water or three different SAP hydrogels,sodium polyacrylate (SP),potassium polyacrylate (PP),and sodium polyacrylate embedded with phosphate rock powder (SPP),as growth media.Growth characteristics of the model plant and damage were assessed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM).The results showed that both the SP and PP treatments had pronounced negative effect on the hydrogels of growth of maize seedlings.The SPP treatment appeared to facilitate the stem-leaf growth and had no obvious adverse effect on root growth.All the three hydrogel treatments caused varying degrees of damage to the organizational structure and cellular morphology of the roots,with the SP and PP treatments causing the most severe damage;the membrane system of root cells was damaged by both SP and PP treatments.An excessive accumulation of sodium and reduction of calcium occurred in the roots may be responsible for the observed damage to the cell membrane system,which,in turn,may have promoted the wilting of the cells.

机译：高吸收性聚合物（SAPs）作为土壤水分调节剂已在农业中得到越来越多的应用，但关于SAPs对作物生长的影响的报道却相互矛盾。在这项研究中，实验室研究和分析均研究了不同SAP对土壤水分的影响。节水农业措施下作物的生长和生理用扫描电镜（SEM）和透射电镜（TEM）评估模型植物的生长特性和伤害。结果表明，SP和PP处理均对植物的生长有明显的负面影响。玉米幼苗生长的水凝胶。SPP处理似乎促进了茎叶的生长，并且对根腐病没有明显的不利影响。三种水凝胶处理均对根的组织结构和细胞形态造成不同程度的破坏，其中SP和PP处理造成的破坏最为严重; SP和PP处理均破坏了根细胞的膜系统。根系中钠的过度积累和钙的减少可能是所观察到的细胞膜系统受损的原因，而细胞膜系统的受损反过来又可能促进了细胞的萎。

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来源
《土壤圈（英文版）》 |2017年第2期|274-282|共9页
作者
CHEN Xian; HUANG Lei; MAO Xiaoyun; LIAO Zongwen; Zhenli HE;
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作者单位

College of Resource and Environmental Sciences,South China Agriculture University,Guangzhou 510642(China);

College of Resource and Environmental Sciences,South China Agriculture University,Guangzhou 510642(China);

College of Resource and Environmental Sciences,South China Agriculture University,Guangzhou 510642(China);

College of Resource and Environmental Sciences,South China Agriculture University,Guangzhou 510642(China);

University of Florida,Institute of Food and Agricultural Sciences,Indian River Research and Education Center,Fort Pierce FL 34945(USA);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 eng
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A Comparative Study of the Cellular Microscopic Characteristics and Mechanisms of Maize Seedling Damage from Superabsorbent Polymers

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