The effects of the basal and top-dressing nitrogen (N) on N uptake and translocation, N utilization efficiency, grain yieldand quality of medium-gluten winter wheat Yangmai 10 were studied from 2000 to 2002. The main ...The effects of the basal and top-dressing nitrogen (N) on N uptake and translocation, N utilization efficiency, grain yieldand quality of medium-gluten winter wheat Yangmai 10 were studied from 2000 to 2002. The main results were as follows.Nitrogen content and nitrogen accumulation in plant at maturity increased with the amount of N application. Grain proteincontent and wet gluten content were significantly correlated with applied N. There was a significantly positive correlationbetween nitrogen accumulation before anthesis (NBA) and basal N fertilizer, and between nitrogen accumulation afteranthesis (NAA) and top-dressing N. N accumulated in grains was significantly correlated to NBA, NAA and N translocationfrom vegetative organs after anthesis (NTVA). NBA was significantly correlated with N application, but NAA and NTVAhad a quadratic curve correlation with applied N. N fertilizer use efficiency (NUE) had a quadratic curve correlation withapplied N, and the NUE was high when basal and top-dressing N was equally applied. For the medium-gluten wheatYangmai 10 under the same N application ratio, there was a N-regulating effect when the N application was less than266.55 kg ha-1, a stagnation of yield and quality when N application ranged from 266.55 to 309.08 kg ha-1, and an excessiveN application when the N application rate was greater than 309.08 kg ha-1. Under the conditions of this experiment, theprecise N application is 220-270 kg ha-1 with basal and top-dressing N equally used when a grain yield of more than 6 750kg ha-1, protein content higher than 12%, wet gluten content more than 30% and NUE greater than 40% could be obtained.展开更多
小麦贮藏蛋白是面粉品质的主要评价指标。本研究以不同高分子量麦谷蛋白亚基组合的强筋小麦(济麦44和济麦229)和中筋小麦(济麦22)为试材,分析强筋小麦和中筋小麦及4+12和5+10高分子量麦谷蛋白亚基组合的籽粒醇溶蛋白、麦谷蛋白及谷蛋白...小麦贮藏蛋白是面粉品质的主要评价指标。本研究以不同高分子量麦谷蛋白亚基组合的强筋小麦(济麦44和济麦229)和中筋小麦(济麦22)为试材,分析强筋小麦和中筋小麦及4+12和5+10高分子量麦谷蛋白亚基组合的籽粒醇溶蛋白、麦谷蛋白及谷蛋白大聚合体(GMP)在小麦灌浆期的积累动态和成熟籽粒中的贮藏蛋白种类、相对含量。结果表明,强筋小麦和中筋小麦的麦谷蛋白和醇溶蛋白在整个小麦灌浆期的积累趋势相同,均持续上升,但GMP积累却存在较大差异,强筋小麦的GMP含量持续增加而中筋小麦呈“下降-上升-下降-上升”的趋势。从高分子量麦谷蛋白亚基组成类型上看,5+10亚基组合的醇溶蛋白、麦谷蛋白及GMP在灌浆中后期的含量均高于4+12亚基组合类型。通过TMT(tandem mass tags)蛋白质组学分析发现,3个小麦品种的成熟籽粒共检测到53个贮藏蛋白,共分为三类,包括27个醇溶蛋白、16个Avenin-like蛋白和10个麦谷蛋白。济麦44较济麦22相对含量高的原因是大多数贮藏蛋白的表达量高,而济麦229相对含量高的原因是部分贮藏蛋白超高量表达。本研究结果可为我国小麦品质改良和优质小麦生产提供技术参考。展开更多
基金supported by Foundation for University Key Teacher by the Ministry of Education of China(GG-901-11117-1003)the Research Fund from Jiangsu Province of China(BE2001333).
文摘The effects of the basal and top-dressing nitrogen (N) on N uptake and translocation, N utilization efficiency, grain yieldand quality of medium-gluten winter wheat Yangmai 10 were studied from 2000 to 2002. The main results were as follows.Nitrogen content and nitrogen accumulation in plant at maturity increased with the amount of N application. Grain proteincontent and wet gluten content were significantly correlated with applied N. There was a significantly positive correlationbetween nitrogen accumulation before anthesis (NBA) and basal N fertilizer, and between nitrogen accumulation afteranthesis (NAA) and top-dressing N. N accumulated in grains was significantly correlated to NBA, NAA and N translocationfrom vegetative organs after anthesis (NTVA). NBA was significantly correlated with N application, but NAA and NTVAhad a quadratic curve correlation with applied N. N fertilizer use efficiency (NUE) had a quadratic curve correlation withapplied N, and the NUE was high when basal and top-dressing N was equally applied. For the medium-gluten wheatYangmai 10 under the same N application ratio, there was a N-regulating effect when the N application was less than266.55 kg ha-1, a stagnation of yield and quality when N application ranged from 266.55 to 309.08 kg ha-1, and an excessiveN application when the N application rate was greater than 309.08 kg ha-1. Under the conditions of this experiment, theprecise N application is 220-270 kg ha-1 with basal and top-dressing N equally used when a grain yield of more than 6 750kg ha-1, protein content higher than 12%, wet gluten content more than 30% and NUE greater than 40% could be obtained.
文摘小麦贮藏蛋白是面粉品质的主要评价指标。本研究以不同高分子量麦谷蛋白亚基组合的强筋小麦(济麦44和济麦229)和中筋小麦(济麦22)为试材,分析强筋小麦和中筋小麦及4+12和5+10高分子量麦谷蛋白亚基组合的籽粒醇溶蛋白、麦谷蛋白及谷蛋白大聚合体(GMP)在小麦灌浆期的积累动态和成熟籽粒中的贮藏蛋白种类、相对含量。结果表明,强筋小麦和中筋小麦的麦谷蛋白和醇溶蛋白在整个小麦灌浆期的积累趋势相同,均持续上升,但GMP积累却存在较大差异,强筋小麦的GMP含量持续增加而中筋小麦呈“下降-上升-下降-上升”的趋势。从高分子量麦谷蛋白亚基组成类型上看,5+10亚基组合的醇溶蛋白、麦谷蛋白及GMP在灌浆中后期的含量均高于4+12亚基组合类型。通过TMT(tandem mass tags)蛋白质组学分析发现,3个小麦品种的成熟籽粒共检测到53个贮藏蛋白,共分为三类,包括27个醇溶蛋白、16个Avenin-like蛋白和10个麦谷蛋白。济麦44较济麦22相对含量高的原因是大多数贮藏蛋白的表达量高,而济麦229相对含量高的原因是部分贮藏蛋白超高量表达。本研究结果可为我国小麦品质改良和优质小麦生产提供技术参考。