1976—1979年,我们进行了花药培养基附加落地生根(景天科学名Bryophyllum calycinum Salisb 为多年生草本植物)提取液的试验,发现10％落地生根稀盐酸或水提取液对水稻花药愈伤组织的分化有较好的效果,能够代替 N_6培养基中激动素成分,与激动素合用还可以提高水稻绿苗分化率。下面介绍培养基附加落地生根提取液的配制方法和 From 1976 to 1979, we conducted a test of the addition of anther culture medium with rhizobia (Bryophyllum calycinum Salisb is a perennial herb) extract and found that 10% rhizosphere rooting dilute hydrochloric acid or water extract had significant effects on the anther callus Differentiation has a better effect, can replace the hormone composition in N_6 medium, combined with kinetin can also increase the rate of rice plant differentiation. The following describes the medium attached rooting root extract preparation method and