Effects of Paclobutrazol on Dry Matter Distribution and Yield in Peanut
Sachiko Senoo and Akihiro Isoda
(Faculty of Horticulture, Chiba University, 648 Matsudo,
Chiba 271-8510, Japan)
Abstract
Paclobutrazol, an inhibitor of endogenous gibberellin
synthesis, was applied to alter dry matter distribution and to
increase seed yield. After the flowering, threele pod filling
stage (MPFS), with four concentration levels of the solution (0ppm,
100ppm, 200ppm and 400ppm) were made for determining the proper
timing and concentration level of paclobutrazol treatment. The
plant height of the treated plots at BPFS and EPFS was shorter
than that of the control by more than 10cm and 5cm, respectively.
The pod number of the 100ppm and 200ppm plots at any treatment
stage was greater than those of the control and the 400ppm plot.
The seed yield was increased by the treatment with paclobutrazol
at all stages of the treatment. The 100ppm and 200ppm at BPFS
and EPFS had greater seed yields, at approximately 370g m-2.