Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil.
Serviço Nacional de Aprendizagem Industrial - SENAI, Laboratório de Tecnologia de Sementes, Dourados, MS, Brasil.
Braz J Biol. 2024 Sep 2;84:e286941. doi: 10.1590/1519-6984.286941. eCollection 2024.
Seed priming with biostimulant for soybean is a promising practice contributing positively to the physiological quality and vigor of seedlings, but there are little studies regarding protocols of bioinputs, such as Ascophyllum nodosum L. seaweed extract. We aimed to evaluate the effect of doses of A. nodosum macroalgae in seed priming and its impact on germination and seedling vigor of soybean. Seeds were subjected to priming with A. nodosum extract (ANE) at doses of 0, 1, 2, 3, 4, and 5 mL kg seed-1 during 15 min. Priming with ANE did not influence the first count and seed germination. Soybean seedlings from priming with 5 mL kg-1 ANE showed higher growth and shoot and root dry biomass. We observed increase 18% for shoot dry matter with priming of 5 mL kg-1 ANE compared to untreated seeds. The responses were variable for the emergence speed index in function ANE and did not influence the photochemical processes in photosystem II. Seed priming with ANE contributed in higher chlorophyll index. ANE showed a biostimulant effect on soybean seedlings, providing better growth and biomass characteristics, being promising in seed priming, but further studies are suggested in order to increase information regarding its use protocol for soybean.
海藻酸钠种衣剂对大豆种子进行引发处理是一种很有前途的做法，它可以积极促进幼苗的生理质量和活力，但关于生物投入（如泡叶藻提取物）的方案的研究却很少。本研究旨在评估泡叶藻海藻酸钠的剂量对大豆种子引发的影响及其对大豆发芽和幼苗活力的影响。种子在 15 分钟内用泡叶藻提取物（ANE）进行引发处理，剂量分别为 0、1、2、3、4 和 5 mL kg-1 种子。ANE 引发处理不影响首次计数和种子发芽。用 5 mL kg-1 ANE 引发的大豆幼苗表现出更高的生长和地上部及根干生物量。与未处理的种子相比，用 5 mL kg-1 ANE 引发的幼苗地上部干物质增加了 18%。ANE 对萌发速度指数的响应因剂量而异，并不影响光系统 II 的光化学过程。ANE 引发可提高叶绿素指数。ANE 对大豆幼苗表现出生长促进作用，提供更好的生长和生物量特征，在种子引发方面具有很大的应用潜力，但为了增加关于其在大豆上使用方案的信息，建议进一步研究。
