【摘要】 利用G140 髓脱分化的愈伤组织多次继代和植株再生, 经组培苗形态选择, 大田种植进行花叶病自然感染筛选和温室接种筛选, 得到花叶病感病指数低的烟草变异株。变异株的光合速率、叶绿素含量、叶片厚度均优于对照。更多还原

【Abstract】 The somaclonal variants were selected from the somatic clone mutant by following culture and the plantlet regeneration from the calli of G140.The variants were planted in the field after screening and were vaccinated with pure mosaic virus in the conservatory.At last the tobacco lines of somaclonal variation with high mosaic resistance(TMV and CMV) have been obtained.The variant plants had higher values than their parent on leaf thickness,chlorophyll content or photosynthesis.更多还原