何曙光;李华平;戴力;刘洋;匡炜;方宝华;赵杨;

• 1:临湘市农业农村局
• 2:湖南省水稻研究所

摘要(Abstract)：

以早稻品种湘早籼42号为材料,研究不同浓度的PQQ溶液对低温胁迫下早稻幼苗生理特性的影响。结果表明:低温胁迫前叶面喷施0.5和1 μmol/L PQQ溶液,活苗率较对照大幅提高,分别达到40.23%和43.14%,与对照差异显著;而PQQ溶液浓度≥25 μmol/L时活苗率反而降低;低温胁迫前喷施0.5 μmol/L的PQQ,对株高、鲜重、干重和含水量的影响与对照差异不显著;而低温胁迫5 d时,PQQ处理过的幼苗电导率降低了7.19个百分点、MDA含量减少了5.23 nmol/g、脯氨酸和可溶性糖含量分别增加了8.02 μg/g和23.4 mg/g、SOD和POD酶活性分别提升了9.19%和11.45%,与对照的差异均达显著水平。这表明PQQ可通过提高抗氧化酶活性和调节非酶促防御系统同时减轻低温胁迫对水稻幼苗造成的伤害,提高水稻幼苗耐冷能力。

关键词(KeyWords)： 水稻幼苗;低温胁迫;PQQ;生理指标

Abstract:

Keywords:

基金项目(Foundation): 湖南省农业科技创新资金项目(2018QN07)

作者(Author): 何曙光;李华平;戴力;刘洋;匡炜;方宝华;赵杨;

Email:

DOI: 10.16498/j.cnki.hnnykx.2020.005.006

参考文献(References)：

• [1] Shimono H.Earlier rice phenology as a result of climate change can increase the risk of cold damage during reproductive growth in northern Japan[J].Agriculture,Ecosystems & Environment,2011,144(1):201-207.
• [2] Liu X F,Zhang Z,Shuai J B,et al.Impact of chilling injury and global warming on rice yield in Heilongjiang Province[J].Journal of Geographical Sciences,2013,23(1):85-97.
• [3] Wang P,Zhang Z,Song X,et al.Temperature variations and rice yields in China:historical contributions and future trends[J].Climatic Change,2014,124(4):777-789.
• [4] 高柏群.早稻烂秧的原因与防治方法[J].中国植保导刊,2004,24(3):26-27.
• [5] Huang M,Jiang L G,Zou Y B,et al.On-farm assessment of effect of low temperature at seedling stage on early-season rice quality[J].Field Crops Research,2013,141:63-68.
• [6] Duine J A,Frank J J,Verwiel P E J.Structure and activity of the prosthetic group of methanol dehydrogenase[J].European Journal of Biochemistry,1980,108(1):187-192.
• [7] Duine J A,Frank J J,Van Zeeland J K,et al.Glucose dehydrogenase from Acinetobacter calcoaceticus:a quinoprotein [J].FEBS Letters,1979,108(2):443-446.
• [8] Salisbury S A,Forrest H S,Cruse W B T,et al.A novel coenzyme from bacterial primary alcohol dehydrogenases[J].Nature,1979,280(5725):843-844.
• [9] 箫浪涛,王三根.植物生理学试验技术[M].北京:中国农业出版社,2005.
• [10] 陈建勋,王晓峰.植物生理学实验指导[M].广州:华南理工大学出版社,2006.
• [11] Ludue?a L M,Anzuay M S,Angelini J G,et al.Role of bacterial pyrroloquinoline quinone in phosphate solubilizing ability and in plant growth promotion on strain Serratia sp.S119[J].Symbiosis,2017,72(1):31-43.
• [12] 朱云集,王永华,郭天财,等.吡咯喹啉醌对冬小麦某些生理特性和穗部性状的影响(简报)[J].植物生理学通讯,2000,36(4):330-332.
• [13] 卫秀英,李秀菊,朱坤华.吡咯喹啉醌对苹果花粉萌发和花粉管生长的影响(简报)[J].植物生理学通讯,2000,36(4):320-321.
• [14] 匡炜,刘洋,李强,等.PQQ对水稻产量及主要农艺性状的影响[J].湖南农业科学,2017(12):40-42.
• [15] Choi O,Kim J,Kim J G,et al.Pyrroloquinoline quinone is a plant growth promotion factor produced by Pseudomonas fluorescens B16[J].Plant physiology,2008,146(2):657-668.
• [16] 刘卫群,朱云集,王永华,等.低温胁迫下PQQ对黄瓜幼苗子叶防御系统的影响[J].武汉大学学报(自然科学版),1998,44(4):485-488.
• [17] 刘卫群,韩锦峰,彭文博,等.吡咯喹啉醌对烟草种子萌发的生理效应[J].河南农业大学学报,1993,27(3):223-226.
• [18] 刘卫群,杨铁钊,李文,等.吡咯喹啉醌对烟草幼苗中IAA和玉米素加玉米素核苷及核酸含量的影响(简报)[J].植物生理学通讯,1998,34(4):259-260.
• [19] 刘卫群,杨铁钊,丁永乐,等.吡咯喹啉醌对烟草花粉萌发和花粉管生长的效应(简报)[J].植物生理学通讯,1996,32(6):419-420.