关键词: 染色体, 柑桔类果树, 去壁低渗法, 涂抹制片法, 染色体数目

Abstract: In this paper the wall degradation hypotonic method and the smear method of preparing mitotic chromosome samples in immatured leaves and buds of tangerines (Citrus reticulata Blanco) have been studied. From the chromosome count and observation, it is shown that the wall degradation hypotonic method is more effective than the smear method, While the different effects have been achieved with different treatments in te wall degradation hypotonic method. The wall degradation hyponotic method is of great significane in the preparing chromosome samples in the citrus plant.

Key words: CHROMOSOME (S), CITRUS-RETICULATA TREES, THE WALL DEGRADATION HYPOTONIC METHOD, THE SMEAR METHOD, CHROMOSOME NUMBER