大豆蛋白质的积累动态及其与产质量形成的关系

试验以 3个大豆品种 (东农 4 2、合丰 35、绥农 14 )为材料 ,通过 3种施肥水平处理 (零肥、中肥、高肥 ) ,探讨不同营养水平下不同大豆品种中各器官中蛋白质的积累规律及其与产质量形成的关系。结果表明 ,叶中蛋白质含量以苗期和始花期为高峰 ,始花斯以后平稳下降 ;茎中蛋白质含量随生育期而下降 ,但降幅不同 ;荚皮蛋白质含量随生育进程迅速下降 ;籽粒中蛋白质含量变幅不大 ,呈在籽粒充实期至黄熟期降低 ,而后又回升的趋势或随生育期微增的趋势。同化运输氮素能力强的品种 ,其籽粒中蛋白质含量也高。蛋白质积累以籽粒充实后期为主 ,持续至收获 ,所以黄熟期以后的作物生育也是不容忽视的

The relationship between protein accumulation regulation and yield formation in soybean

Three different genotypes soybeans were adopted in this experiment,and by three fertilizer level.The object of this study was to investigate protein accumulation regulation of soybean cultivars under the condition of different nutrient levels,and their effect on soybean yield and quality.Provide theoretical evidence for breed,cultivation and agricultural production,also manpowered controllable locations. The results of this experiment showed that: 1 Among genotypes,the yield of soybean was different.At moderate and zero fertilizer level,the order of yield was Suinong 14,Dongnong42 and Hefeng35.With the changes of fertilizer level,Soybean yields would increase or decrease.Dongnong42and Hefeng35 had the same tendency.That is:yields of High fertilizer level>Normal fertilizer level>Zero fertilizer level.But yield of Suinong 14 was moderate fertilizer level>High fertilizer level>Zero fertilizer level. 2 At the same fertilizer level,the relative content of fat of different genotypes showed:Dongnong42>Suinong14>Hefeng35.The relative content of protein of different genotypes showed Hefeng35>Suinong14>Dongnong42.The relative content of protein of each genotype increased with the increase of the fertilizer level.But for fat,each genotype showed the same tendency:moderate fertilizer level>High fertilizer level>Zero fertilizer.Oil accumulation was linked to the import of current photosynthetic assimilation.Accumulation of oil in the seeds was earlier than that of protein. 3 The concentration of N in the leaves declined after seedling stage,then increased again at stage of carly flowing,and started to decrease up to leaf senescence,declined rapidly from seed-filling season to stage of yellow ripeness.The concentration of N in the stems and pod walls declined with growth stage. 4 During reproductive growth,protein relative content of Dong nong42 and Hefeng35 in all tissues was significantly higher than that of Suinong 14.Thus,in general high seed protein genotypes exhibited higher N assimilating and partitioning during whole growth stages.Pod walls were media of N partitioning and N content in pod walls at fruiting period was positively associated with seed protein concentration. 5 Oil was accumulated mainly during the early period of reproductive growth stage and all measures of those improving of oil accumulation should be adopted before the stage of fruiting in order to affect the improvement of oil content.Protein was accumulated mainly during the later period of reproductive growth stage up to harvest,so plant growth after stage of yellow ripeness could not be neglected.