胺鲜酯浸种对新麦草种子萌发特性的影响OA

To further improve the seed germination ability of Psathyrostachys perennis Keng(syn.P.perennis Keng),seeds of the cultivar'Moqinwula'were used to investigate the effects of exogenous plant growth regulator diethyl aminoethyl hexanoate(DA-6)on seed germination characteristics.The results showed that both DA-6 concentration and soaking dura-tion had significant effects on seed germination,exhibiting a typical low-promotion and high-inhibition effect.Among all treatments,soaking seeds in 100 mg/L DA-6 for 14 hours was identified as the optimal combination.Under this condition,the seed germination percentage,germination energy,and germination index reached 76.00%,50.00%,and 80.86,respec-tively,which were significantly higher than those of the control group by 40.74%,114.32%,and 52.36%,respectively.In conclusion,soaking seeds of P.perennis Keng in 100 mg/L DA-6 solution for 14 hours prior to sowing was an effective pretreatment method to break seed dormancy and improve seedling establishment quality.This approach provides a valu-able reference for ecological restoration using native grass species and successful establishment of cultivated grasslands.