Division of Plant Industry, CSIRO, P.O. Box 1600, 2601, Canberra City, A.C.T., Australia.
Planta. 1979 Sep;146(4):475-80. doi: 10.1007/BF00380863.
When sufficient 2,4-D to maintain apical dominance for at least 21d was applied to the cut stem interface of sunflower seedlings which had been decapitated in the epicotyl, it could not be detected in the vicinity of the inhibited axillary buds 7d after application. Rather the 2,4-D concentrated at the stump apex where it was associated with formation of meristematic tissue. The results indicate an indirect role for 2,4-D in the maintenance of apical dominance in this system, possibly involving the induced meristematic activity.
当足够的 2,4-D 被应用于已经在顶端被切除的向日葵幼苗的切口茎界面上，以维持至少 21 天的顶端优势时，在应用后 7 天，它在被抑制的腋芽附近无法被检测到。相反，2,4-D 集中在树桩的顶端，与分生组织的形成有关。这些结果表明，2,4-D 在这个系统中维持顶端优势中扮演间接的角色，可能涉及诱导的分生组织活性。
