Kordan H A
Histochem J. 1983 May;15(5):419-26. doi: 10.1007/BF01002696.
Root and shoot growth were severely suppressed in colchicine-pretreated lettuce achenes germinated in the dark and under illumination of 150 lux. Abnormal nuclear morphology rather than normal-appearing restitution nuclei was evident in these drug-pretreated achenes, there being no evidence of normal mitotic behaviour or cytokinetic activity in the root and shoot tissues examined. Root extension and lateral root meristem differentiation were evident in colchicine-pretreated achenes germinated under an illumination of 3000 lux, normal-appearing anaphase figures and cytokinetic activity being evident in both the primary root apices and lateral root meristems. Thus, the growth and mitotic behaviour of germinating colchicine-pretreated lettuce achenes were observed to be influenced significantly by the environmental light intensity in which germination occurred.
在黑暗以及150勒克斯光照条件下萌发的经秋水仙碱预处理的生菜瘦果，其根和芽的生长受到严重抑制。在这些经药物预处理的瘦果中，明显可见异常的核形态，而非看似正常的恢复核，在所检查的根和芽组织中没有正常有丝分裂行为或细胞分裂活动的证据。在3000勒克斯光照条件下萌发的经秋水仙碱预处理的瘦果中，根的延伸和侧根分生组织分化明显，在主根顶端和侧根分生组织中均可见看似正常的后期图像和细胞分裂活动。因此，观察到经秋水仙碱预处理的生菜瘦果萌发时的生长和有丝分裂行为受到萌发时环境光照强度的显著影响。
