中国水稻科学2018，Vol.32Issue(2)：146-154,9.DOI:10.16819/j.1001-7216.2018.7068
盐逆境对水稻产量、光合特性及品质的影响
Performance of Yield,Photosynthesis and Grain Quality of japonica Rice Cultivars Under Salinity Stress in Micro-plots
摘要
Abstract
[Objective]Rice growing is one of the widely utilized technologies for desalting, improving and exploiting tidal flat in Jiangsu coastal beach. The objective is to reveal the effects of salinity stress on rice yield, photosynthetic parameters, grain quality and starch viscosity, providing a reference and laying a theoretical basis for developing rice production in Jiangsu coastal beach.[Method]Four japonica rice varieties with better salt tolerance, Tongjing 981, Yandao 12, Yandao 10 and Nanjing 5055 were used to investigate the yield and its components, photosynthetic parameters, rice quality and starch viscosity under salinity stress (S1, 1.112 dS/m for EC1:5) and no salinity stress (S0, 0.207 dS/m, control).[Result]Compared with the control, rice yield decreased significantly under salinity stress, was only 40.5% of that of the control, panicle number per unit area had no significant difference, while grain number per panicle and 1000-grain weight also decreased significantly. The photosynthetic rate and intercellular CO2concentration decreased significantly, but stomatal induction and transpiration rate had no significant difference between S0and S1. The processing quality of rice, together with amylose content decreased significantly, the appearance quality almost remained unchanged, while protein content increased significantly. The peak viscosity, trough viscosity, final viscosity, breakdown value, consistence value showed no significant changes, the setback value and pasting temperature increased significantly.[Conclusion]Salinity stress had adverse effects on yield, photosynthetic parameters and grain quality of rice. During the critical period of salt stress on yield and quality, such as booting stage and filling stage, measures should be taken to alleviate salt stress.关键词
盐逆境/水稻品种/产量/光合参数/稻米品质/淀粉黏滞性Key words
salinity stress/rice variety/yield/photosynthetic parameters/grain quality/starch viscosity分类
农业科技引用本文复制引用
周根友,翟彩娇,邓先亮,张蛟,张振良,戴其根,崔士友..盐逆境对水稻产量、光合特性及品质的影响[J].中国水稻科学,2018,32(2):146-154,9.基金项目
国家科技支撑计划资助项目(2015BAD01B03) （2015BAD01B03）
江苏省重点研发计划资助项目(现代农业)(BE2015337,BE2016370). （现代农业）
