摘要
本研究旨在探究壳聚糖改性生物炭在盐胁迫条件下对小麦种子萌发和幼苗生长的影响。通过对小麦种子在不同处理组中的发芽率、株高、鲜重、干重、可溶性蛋白含量等指标的测定,以及对其抗氧化能力、叶绿素含量和离子平衡的分析,课题组评估了壳聚糖改性生物炭对小麦幼苗在盐胁迫条件下的生理响应。结果表明,施用壳聚糖改性生物炭显著提高了盐胁迫下小麦种子的萌发率,并促进了幼苗的生长和发育。此外,壳聚糖改性生物炭还有效提高了小麦的抗氧化能力,降低了氧化应激的程度,改善了光合作用和叶绿素合成。同时,壳聚糖改性生物炭调节了小麦根部的离子平衡,降低了Na^(+)含量,增加了K^(+)含量,维持了细胞内离子稳态。综合而言,壳聚糖改性生物炭通过多种机制的协同作用,提高了盐胁迫下小麦种子的萌发能力和幼苗的生长表现,为解决盐碱地土壤对小麦种植的限制提供了一种潜在的土壤改良策略。
This study aimed to investigate the effect of chitosan-modified biochar on germination and seedling growth of wheat under salt stress.By assessing parameters such as germination rate,plant height,fresh weight,dry weight,and soluble protein content of wheat seeds in different treatment groups,as well as analyzing their antioxidant capacity,chlorophyl content,and ion balance,we evaluated the physiological responses of wheat seedlings to chitosan-modified biochar under salt stress.The results demonstrated that the application of chitosan-modified biochar significantly improved the germination rate of wheat seeds under salt stress and promoted the growth and development of seedlings.Moreover,chitosan-modified biochar effectively enhanced the antioxidant capacity of wheat,reducing the extent of oxidative stress and improving photosynthesis and chlorophyll synthesis.Additionally,chitosan-modified biochar regulated the ion balance in wheat roots,reducing Nat content and increasing K+content,thus maintaining cellular ion homeostasis.Overall,chitosan-modified biochar exerted its beneficial effects on wheat seed germination and seedling growth under salt stress through multiple mechanisms,offering a potential soil amendment strategy for mitigating the limitations of saline-alkaline soils in wheat cultivation.
作者
王乙富
Wang Yifu(Agricultural College of Yangzhou University,Yangzhou,225000)
出处
《分子植物育种》
CAS
北大核心
2023年第19期6493-6499,共7页
Molecular Plant Breeding
关键词
壳聚糖改性生物炭
盐胁迫
小麦
种子萌发
幼苗生长
Chitosan-modified biochar
Salt stress
Wheat
Seed germination
Seedling growth
