摘要
对水稻无侧根突变体RM1 0 9与原品种大力 (OryzasativaL .,cv .Oochikara)的冠根组织形态进行比较 ,结果表明 ,大力品种可观察到侧根原基及侧根 ,而RM1 0 9均无 ;RM1 0 9的原生木质部间中柱鞘细胞数目减少 ,为大力的 77% ;后生木质部导管数增加 ,其导管I的数量为大力的 1 4 9% ,其导管Ⅱ的数量为大力的 3 2 1 % ,且导管排列散乱。
The crest root tissue of the without lateral root rice mutant RM109 and its wild type( Oryza sativa L.,cv.OOchikara)were studied in morphology. The results indicates that the Oochikara has lateral root primordium and lateral root, and RM109 has no those. The number of pericycle cells in protoxylem of RM109 reduces to the 77% of that of Oochikara ; the number of vessel in metaxylem increases, and the number of vessel Ⅰ is the 149% of that of Oochikara ; the number of vessel Ⅱ is the 321% of that of Oochikara ; and the vessels arrange disorderly. The cause might be that the cells of root tip growing point differentiates abnormally and the ability of IAA syntesis is very low.
出处
《核农学报》
CAS
CSCD
北大核心
2002年第1期15-19,共5页
Journal of Nuclear Agricultural Sciences
