College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, China.
J Sci Food Agric. 2019 Jan 30;99(2):748-758. doi: 10.1002/jsfa.9243. Epub 2018 Sep 4.
Uniconazole (S3307) and diethyl aminoethyl hexanoate (DA-6) are known plant growth regulators (PGRs). However, it is unknown if their regulation of sucrose and starch content can affect pod setting and yield in soybean. Herein, S3307 and DA-6 were foliar sprayed on soybean Hefeng50 and Kangxian6 at the beginning of the bloom cycle in field tests conducted over two years.
PGRs promoted the accumulation and distribution of plant biomass and significantly improved leaf photosynthetic rates. Sucrose and starch content increased after PGR treatment across organs and varieties. Accumulation and allocation of sucrose and starch content in soybean source organs are enhanced by PGRs, which supply high levels of assimilate to sink organs. Moreover, sucrose and starch contents in source and sink organs are positively correlated. S3307 and DA-6 also significantly increased pod setting rates and reduced flower and pod abscission rates, leading to increased yield.
S3307 and DA-6 promoted the accumulation and availability of sucrose and starch content in source organs and increased sucrose and starch content in flowers and pods or seeds, thereby maintaining the balance between source and sink organs and contributing to increased pod setting rates and soybean yield. © 2018 Society of Chemical Industry.
烯效唑（S3307）和己酸二乙氨基乙醇酯（DA-6）是已知的植物生长调节剂（PGR）。然而，它们对蔗糖和淀粉含量的调节是否会影响大豆的荚果形成和产量尚不清楚。在此，在两年的田间试验中，烯效唑和 DA-6 在大豆合丰 50 和抗线 6 的开花周期开始时叶面喷施。
PGR 促进了植物生物量的积累和分布，显著提高了叶片光合速率。PGR 处理后，各器官和品种的蔗糖和淀粉含量均增加。PGR 增强了大豆源器官中蔗糖和淀粉含量的积累和分配，为汇器官提供了高水平的同化产物。此外，源器官和汇器官中的蔗糖和淀粉含量呈正相关。S3307 和 DA-6 还显著提高了荚果形成率，降低了花和荚的脱落率，从而提高了产量。
S3307 和 DA-6 促进了源器官中蔗糖和淀粉含量的积累和可利用性，并增加了花和荚以及种子中的蔗糖和淀粉含量，从而维持了源器官和汇器官之间的平衡，有助于提高荚果形成率和大豆产量。 © 2018 化学工业协会。
