机构地区:[1]山西农业大学小麦研究所,山西临汾041000 [2]山西农业大学山西有机旱作农业研究院,山西太原030006 [3]山西农业大学省部共建有机旱作农业国家重点实验室(筹),山西太原030006 [4]山西农业大学棉花研究所,山西运城044000
出 处:《核农学报》2023年第4期879-887,共9页Journal of Nuclear Agricultural Sciences
基 金:国家重点研发计划项目(2021YFD1901102-4);山西农业大学省部共建有机旱作农业国家重点实验室自主研发项目(202001-6);山西农业大学特优农业高质量发展科技支撑工程项目(TYGC-20);国家农业环境尧都实验站(NAES-AE-016)。
摘 要:为明确限水灌溉对小麦品质性状的影响,以不同灌水量为主处理,11个小麦品种为副处理,于2017—2020年在山西临汾开展裂区试验,研究不同灌水量对冬小麦品质性状的影响。结果表明,在0.0、75.0、150.0 mm灌水量下,千粒重、蛋白质含量、湿面筋含量、延展性均随灌水量的增加而下降,而不同灌水量处理间的容重、沉降值、最大抗延阻力、稳定时间、形成时间、拉伸面积无显著差异;不同灌水量下不同试验年度的各品质性状整体存在极显著差异,品质性状在2019—2020年度间优于2018—2019,2018—2019年度优于2017—2018。在0.0~150.0 mm灌水量区间内,各品质性状的变异系数总体表现为面团品质均值>面粉品质均值>籽粒品质均值,0.0 mm灌水量品质性状的变异系数均小于75.0、150.0 mm灌水量,千粒重、容重、沉降值、最大抗延阻力、稳定时间、形成时间、拉伸面积性状的变异系数均随灌水量的增加而增大。在0.0~150.0 mm灌水量区间内,品质性状与蛋白质含量的相关性表现为:千粒重、容重与蛋白质含量呈线性负相关,湿面筋含量、延展性、沉降值、最大抗延阻力、稳定时间、形成时间、拉伸面积则与蛋白质含量呈线性正相关;其中沉降值、延展性、形成时间、最大抗延阻力、稳定时间、拉伸面积与蛋白质含量的相关系数均随灌水量的增加而增大,而千粒重、湿面筋含量与蛋白质含量的相关系数则随灌水量的增加而减小。籽粒蛋白质产量在各试验年度均表现为随灌水量的增加而增加,且不同灌水量、试验年度间整体存在显著差异。本研究结果可为限水灌溉改善小麦品质性状提供理论与技术支撑。In order to clarify the effects of limited irrigation on quality traits of winter wheat,a split-plot experimental design(irrigation amounts as the main plot and wheat cultivars as the subplot)was carried out conducted in Linfen,Shanxi province from 2017 to 2020.The results showed that 1000-grain weight,protein content,wet gluten content and extensibility were decreased with increasing irrigation amount under 0.0,75.0 and 150.0 mm irrigation levels,while no significant differences existed between test weight,zeleny sedimentation value,max resistance,stability time,formation time and stretch area.Quality traits performed significant difference across all experimental years under different irrigation amounts.The annual wheat quality traits in 2019—2020 performed better than those in 2018—2019,and traits in 2018—2019 were better than those in 2017—2018.In the range of 0.0~150.0 mm irrigation levels,the variable coefficient of quality traits showed the trend of dough>flour>grain.Additionally,variable coefficient under 0.0 mm was less than those under 75.0 mm and 150.0 mm irrigation levels.Variable coefficient of 1000-grain weight,test weight,zeleny sedimentation value,max resistance,stability time,formation time and stretch area increased with increasing of irrigation amounts.The 1000-grain weight and test weight showed linear negative correlation with protein content,while wet gluten content,extensibility,zeleny sedimentation value,max resistance,stability time,formation time and stretch area showed linear positive correlation with protein content in the range of 0.0~150.0 mm irrigation levels.The correlation coefficients between zeleny sedimentation value,extensibility,formation time,max resistance,stability time,stretch area and protein content were increased with increasing irrigation amounts,and the correlation coefficients between 1000-grain weight,wet gluten content and protein content decreased with increasing of irrigation amounts.The grain protein production increased with increasing irrigation amoun
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