“Colcer”和“4S”的两个棉花品种评价了胚根显露速率,作为测定未脱绒、酸脱绒的大粒种子、小粒种子和漂浮种子的活力和出苗力的指标。两个品种和各类型种子,在20℃下发芽迅速的种子,在28℃土壤中出苗,比萌发较慢的种子为快而整齐。在低温下,上浮的种子和酸脱绒的小粒种子的出苗显著少于未脱绒的小粒种子,在15℃下的胚根显露速率与20℃的曲苗力有关。从第1,第2胚根等级的种子出苗来看,明显大于第3等级,而第4和第5级的幼苗几乎很少或接近于零。第4天显露胚根的种子形成的植株,在32、45和56天后,植株于物质重量显著低于第2天显露胚根的“4S”种子形成的植株的干重,在“Coker”品种观察到只有一种相似的趋势,但无显著的差异. Two cotton cultivars, “Colcer” and “4S”, evaluated the radicle emergence rate as an indicator of viability and emergence of large, seedless, and floating seeds that had not been decolored or acid deprived. Two varieties and various types of seeds, germinating rapidly at 20 ° C, germinated in 28 ° C soil, faster and neater than slower-germinated seeds. At low temperature, the emergence of floating seeds and acid-deprived small seeds was significantly less than that of non-deprived small seeds, and the radicle emergence rate at 15 ℃ was related to the seedling strength at 20 ℃. Seeds of the first and second radicle rankings were significantly larger than the third level in terms of seedling emergence, whereas seedlings of the fourth and fifth levels had few or nearly zero seedlings. On the fourth day, the plants formed by the seeds of the radicle were exposed. After 32, 45 and 56 days, the plants were significantly lower in dry weight than those formed by the “4S” seeds whose radicles were exposed on the second day, There was only one similar trend observed, but no significant difference.