摘要
为了明确盐胁迫对苦荞植株生长发育及产量的影响,本试验以苦荞盐敏感品种‘川荞2号’为试验材料,对苦荞幼苗期喷施不同浓度的氯化钠(NaCl)溶液,检测和分析苦荞根系形态和根系活力、叶片中抗氧化酶的活性和叶绿素含量、单株产量的影响。结果显示:‘川荞2号’的根表面积、根系长度、根体积、根平均直径、根系活力、超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、百粒重随着NaCl处理浓度的增加均呈现先增加后减少的趋势,均在低浓度NaCl溶液处理时达最大;与对照相比,低浓度NaCl处理(0.5%)能提高苦荞单株产量1.63倍,高浓度处理(1%)则降低到0.97倍。可见,适宜浓度的NaCl处理(0.5%)能促进苦荞的生长及最终产量的增加。本研究对提高苦荞在盐胁迫条件下的产量提供一定的参考。
To clarify the effects of salt stress on the growth,development,and yield of tartary buckwheat,this study used the salt-sensitive variety‘Chuanqiao No.2'as the experimental material.Seedlings were treated with different concentrations of sodium chloride(NaCl)solution,and the effects on root morphology and activity,antioxidant enzyme activities in leaves,chlorophyll content,and individual plant yield were measured and analyzed.The results showed that root surface area,root length,root volume,average root diameter,root activity,and the activities of superoxide dismutase(SOD),peroxidase(POD),and catalase(CAT),as well as the 100-grain weight,all exhibited a trend of first increasing and then decreasing with increasing NaCl concentration,reaching maximum values under low-concentration NaCl treatment.Compared with the control,low NaCl concentration(0.5%)increased the yield per plant by 1.63 times,while high concentration(1%)reduced it to 0.97 times.These findings indicate that an appropriate concentration of NaCl(0.5%)can promote the growth and final yield of tartary buckwheat.This study provides a useful reference for improving tartary buckwheat yield under salt stress conditions.
作者
张新月
郭溶誉
王晓静
李振东
黄凯丰
黄小燕
Zhang Xinyue;Guo Rongyu;Wang Xiaojing;Li Zhendong;Huang Kaifeng;Huang Xiaoyan(Buckwheat Industry Technology Research Center,College of Life Science,Guizhou Normal University,Guiyang,550001)
出处
《分子植物育种》
北大核心
2025年第14期4759-4764,共6页
Molecular Plant Breeding
基金
贵州省科技支撑计划项目(〔2020〕1Y048
〔2021〕一般271)
贵州省教育厅创新群体重大研究项目(黔教合KY字〔2018〕015)共同资助。
关键词
苦荞
NACL溶液
根系形态
抗氧化酶活性
单株产量
Tartary buckwheat
NaCl solution
Root morphology
Antioxidant enzyme activity
Yield per plant
作者简介
通信作者:黄小燕,huangxy666@126.com。
