Abstract
EffeCts of N6-benzyladenine (N6-BA) considered as a plant growth regulator were studied on the qualities and some components of postharvest cabbage head.
When N6-BA solutions (50-100ppm) were applied to stem ends of cabbage heads, respiration of the cabbage was retarded for several days. When the protein of cabbage leaf was fractionated by means of the gel filtration (Sephadex-G 200 column), the chromatogram indicated the presence of two main fractions of high molecular weight protein and low molecular weight protein. The former content was kept at higher level by N6-BA (50ppm) treatment. Generally, amino nitrogen content in the leaf increased after harvest, but the increasing was retarded with N6-BA.
Above two results suggested that N6-BA has the action as an inhibitor of protein degradation or as an accelerator of protein synthesis.
Chlorophyll a and b contents in cabbage leaf were kept at relatively high level with N6-BA, and the the color of the outer leaf was kept fine green for several days.
No effects of N6-BA treatment on the content of ascorbic acid and alcohol insoluble solid of the leaf and on the weight loss of the cabbage head were found.
