华北农学报2017，Vol.32Issue(z1)：147-152,6.DOI:10.7668/hbnxb.2017.S1.026
CaCl2对低温胁迫及恢复后玉米自交系种子萌发及幼苗生理特性的影响
Effects of CaCl2on Maize Inbred Lines Seed Germination and Seedling Physiological Characteristics under Low Temperature Stress and Recovery
摘要
Abstract
In order to explore the effects of CaCl2on maize inbred lines seed germination and seedling physio-logical characteristics under low temperature stress and recovery,determining the optimum CaCl2concentration was the most significant effect on the mitigation of maize under low temperature stress.Used maize inbred lines Y-478, ZC-546 as the materials,the effects of two kinds of maize seeds were studied by soaking,spraying and composite processing CaCl280,160 mmol/L.The germination rate,germination potential,germination index and relative con-ductivity,soluble protein,Pn,Fv/Fm,POD and SOD activities were observed under low temperature stress than re-turned to normal temperature conditions.The results showed that under the low temperature stress,compared with the maize inbred lines without CaCl2treatment at low temperature,the germination rate,germination potential and germination index of the two types of maize were significantly increased under 80 mmol/L CaCl2treatment,the rela-tive conductivity of the seedlings decreased,the net photosynthetic rate increased,the activity of POD and SOD in-creased,the net photosynthetic rate and Fv/Fm of the two types of maize seedlings showed an upward trend at the two CaCl2concentrations,and the other indexes returned to normal. The 80 mmol/L CaCl2composite processing method to alleviate the best effect of low temperature stress on maize,Y-478 of the change range was small and had the strongest cold resistance,ZC-546 of the change range was large and had a weak cold resistance.关键词
玉米/CaCl2/低温胁迫/生理特性Key words
Maize/CaCl2/Chilling resistance/Physiological property分类
农业科技引用本文复制引用
杨德光,马月,蒋芳芳,边鸣镝,周婷婷,刘永玺..CaCl2对低温胁迫及恢复后玉米自交系种子萌发及幼苗生理特性的影响[J].华北农学报,2017,32(z1):147-152,6.基金项目
农业部种业攻关项目"玉米育种急需重要性状深度评价" （）
2015年农业部全国农业杰出科研人才项目(2015) （2015）
