4,4,4三氟-3-(吲哚-3-)丁酸和吲哚丁酸对水稻和莴苣幼苗种子根长度及侧根原基发生的影响

The Effects of TFIBA and IBA on Seminal Root Length and Initiation of Lateral Root Primordial of Rice and Lettuce Seedlings

适宜浓度的TFIBA显著促进了莴苣和水稻初生种子根的伸长生长 ,抑制了水稻种子根侧根原基的发生 ,但对莴苣侧根原基的发生无任何作用 。

The effects of 4,4,4 trifluoro 3 (indole 3 )butyric acid (TFIBA) and indole 3 butyric acid (IBA) on the growth of primary roots and the genesis of lateral root primordial (LRP) were investigated. It was found that TFIBA at range of 0.001～10 μmol·L -1 inhibited the initiation of LRP while promoted the growth of primary roots of rice seedlings, whose effect was contrary to that of IBA. TFIBA at range of 0.1～100 μmol·L -1 also promoted the growth of lettuce seedlings while did not exhibit any promotive effect on the initiation of LRP.