不同类型大豆品种籽粒蛋白质含量的积累规律研究

Accumulation Regulation of Protein Content during Seed Developing of Different Soybeans

选用在黑龙江省种植面积较大的12个大豆品种为材料,从鼓粒期开始,每隔7d取一次样,研究不同类型大豆品种籽粒蛋白质含量的积累动态规律。结果表明:不同类型大豆品种籽粒蛋白质的积累动态规律不同。高蛋白品种呈双峰曲线变化,高油品种和中间型品种呈单峰曲线变化,但峰值出现的时间不同。在籽粒形成的中后期,不同类型大豆品种平均籽粒蛋白质含量的变化趋于平稳,高蛋白品种蛋白质含量最高,高油品种最低,中间型品种介于两者之间。不同类型大豆品种在各取样时期的平均籽粒蛋白质含量的差异达到显著或极显著水平,且蛋白质的合成以籽粒形成的中后期为主。

Soybean is a very important grain and oil crop, and the protein content is one of main indicators of soybean quality, so study the dynamic accumulation of protein content in soybean seeds is important for quality improvement. This experiment chose twelve popular soybean varieties in Heilongjiang province, including four high- protein, four high- oil and four general varieties, as material, and the dynamic accumulation of protein content among different soybean seeds was investigated. The results showed that the accumulation dynamics of seed protein varied with varieties, the high- protein variety showed a double-peak curve trend, and the peak value appeared 14 days and 28 days after seed filling;the high-oil variety and general variety showed a single- peak curve, and the peak appeared 28 days after seed filling for high- oil variety. The average protein content of different soybean varieties changed obviously in former period of seeds formation, and remain stable in later period. During the later seed formation, high,-protein variety had the highest protein content, while high-oil variety had the lowest protein content. The final protein content of different soybean was mainly determined by middle or later period of the seeds formation, Suggesting that we should pay more attention to cultivation practice in later soybean growing stage.