氮素缓解春小麦花后高温早衰的荧光特性研究

坚天才,吴宏亮,康建宏,李鑫,刘根红,陈倬,高娣

Fluorescence Characteristics Study of Nitrogen in Alleviating Premature Senescence of Spring Wheat at High Temperature After Anthesis

JIAN TianCai,WU HongLiang,KANG JianHong,LI Xin,LIU GenHong,CHEN Zhuo,GAO Di

表4 不同氮肥和温度处理对春小麦PI、Fv/F0、Fv/Fm和RuBP羧化酶活性的影响

Table 4 Effects of different nitrogen fertilizer and temperature treatments on PI, Fv/F0, Fv/Fm and Rubisco in spring wheat banner leaf

年份 温度 Temperature 氮肥 Nitrogenous 花后不同时间的荧光参数 Fluorescence parameters at different time after flowering PI Fv/F0 Fv/Fm Rubisco (mmol CO2·min-1·mL-1) 25 d 30 d 25 d 30 d 25 d 30 d 25 d 30 d 2019 CK N0 1.54d 0.44cd 1.98de 0.92d 0.53b 0.44bc 0.33e 0.23d N1 1.92cd 0.62bc 2.18d 1.30cd 0.58b 0.54b 0.51d 0.38c N2 2.03cd 0.78bc 2.46cd 2.37b 0.63ab 0.66ab 0.62c 0.49b N3 4.91a 1.53a 4.02a 3.10a 0.75a 0.76a 0.87a 0.62a N4 3.06b 1.03b 2.78c 2.44b 0.73a 0.68ab 0.79b 0.42c HT N0 0.26f 0.23d 0.98f 0.66e 0.44c 0.31c 0.11f 0.06e N1 0.32f 0.18e 1.24e 0.74e 0.74a 0.44bc 0.35e 0.22d N2 1.01e 0.21d 2.86c 1.95c 0.78a 0.65ab 0.52d 0.41c N3 2.96b 0.96b 3.52b 2.58b 0.79a 0.71a 0.58c 0.50b N4 1.86cd 0.28d 3.60b 1.45cd 0.67ab 0.48bc 0.51d 0.33cd 2020 CK N0 2.15c 0.84d 2.51d 1.51c 0.48c 0.40c 0.39e 0.28e N1 2.31b 0.97d 2.80c 1.94b 0.50c 0.46b 0.66c 0.44c N2 3.44b 1.21cd 3.03b 1.85b 0.61a 0.54ab 0.68c 0.42c N3 5.83a 2.39a 3.50a 2.36a 0.62a 0.58a 1.02a 0.69a N4 3.41b 1.50c 3.40a 1.98b 0.56bc 0.59a 0.82b 0.40cd HT N0 0.83e 0.45f 1.59f 0.54f 0.32d 0.15d 0.19f 0.10f N1 1.21d 0.88d 2.04e 1.06e 0.46c 0.39c 0.14f 0.09f N2 2.06cd 1.33cd 2.53d 1.31d 0.55bc 0.40c 0.43e 0.31e N3 3.20bc 1.92b 3.05b 1.83b 0.58a 0.49b 0.50d 0.38d N4 2.16c 0.67e 2.63cd 1.59c 0.50b 0.47b 0.62c 0.51b 2019 方差分析 Variance analysis 温度 Temperature (T) * NS NS ** 施氮量 Nitrogenous (N) ** ** ** * 温度×施氮量 T×N * * * * 2020 方差分析 Variance analysis 温度 Temperature (T) NS NS NS ** 施氮量 Nitrogenous (N) ** * ** * 温度×施氮量 T×N * * * *