Peroxidase activity in the pedicel abscission zone of young cotton boll was promoted either by removing the opposite leaf, removing stigma, or spraying ethrel on the flower.

• 使用去叶、阻止受精或乙烯利处理花朵的方法,诱发棉花幼铃脱落,铃柄离区的过氧化物酶活性增加,到脱落前达到最高值。