镧和铈对东北大豆籽粒蛋白质积累的动态影响

Effects of Rare Earth on Protein Accumulation Dynamics of Soybean in Northeast China

以东北特有的大豆东农42和东农47为试验材料,选用盆栽方式种植,采用扩散培养法测定大豆籽粒蛋白质含量。在苗期和初花期分别叶面喷施不同浓度的LaCl_3,CeCl_3和LaCl_3+CeCl_3溶液,研究初荚至成熟期镧和铈对大豆籽粒蛋白质积累动态的影响。结果表明:适宜浓度的LaCl_3,CeCl_3和LaCl_3+CeCl_3溶液可提高大豆成熟后籽粒蛋白质含量,稀土的种类和喷施浓度对大豆籽粒的蛋白质含量有影响,且存在品种间的差异性。东农42和东农47分别喷施40 mg·L^(-1)LaCl_3+CeCl_3混合溶液和120 mg·L^(-1)CeCl_3溶液,大豆成熟后籽粒蛋白质含量达到最高,其蛋白质含量分别较对照增加了15.73%和12.58%,达到了差异显著水平。

Soybean Dongnong 42 and 47 were used as test materials with planting in the pot. The spread of culture method were used to determine protein content of soybean seed. Spraying different concentrations of LaCl3, CeCl3 and LaCl3＋ CeCl3 in seedling stage and flowering stage to study the accumulated effect on soybean protein during the early period from the beginning to the mature stage. The results showed that suitable concentration of LaCl3, CeCl3 and LaCl3＋ CeCl3 can increase the protein content of mature soybean seed. The effects of different concentrations and kinds of rare earth on the different varieties of soybeans were different. Seed protein content of Dongnong 42 and Dongnong 47 reached the highest in spraying 40 mg·L^-1 LaCl3＋ CeCl3 and 120 mg·L^-1 CeCl3 respectively, which make protein content increase 15.73% and 12.58% significantly.