不同盐分类型对一年生早熟禾种子萌发和幼苗生长的影响 postprint

Abstract: The effects of different salt types and concentrations on the germination characteristics of Poa annuaseeds were studied using the Petri dish method in this study. The relative germination rate, potential, index, vigor,bud length, radicle length, and salt damage rate were measured, analyzing the responses of P. annua seedgermination and seedling growth to different salt types. The results indicated that: (1) P. annua from Yongchanghad superior germination and seedling growth characteristics compared with the other provenances. (2) varioussalt types and concentrations significantly inhibited seed germination and seedling growth, with alkaline saltsexhibiting stronger toxicity compared with neutral salts, and radicles being more sensitive than buds duringgermination; and (3) the salt toxicity of different salt types during P. annua seed germination ranked as follows:Na2CO3>NaHCO3>Na2SO4>NaCl. Therefore, this study provides a scientific basis for planting P. annua forecological restoration of different types of saline lands.