Localization of 4-chloroindole-3-acetic acid in seeds of Pisum sativum and its absence from all other organs

4-Chloroindole-3-acetic acid (4-Cl-IAA) was shown by GC-MS analysis to be present in immature and mature seeds of Pisum sativum, but not in any other organs of this plant. Its content was maximal at one week after anthesis and decreased as the seeds matured. Only indole-3-acetic acid (IAA) was detected in the other organs of P. sativum, its content being particularly high in the flowers and young pods during anthesis and the early pod set.