ISHS Acta Horticulturae 774: XXVII International Horticultural Congress - IHC2006: International Symposium on Endogenous and Exogenous Plant Bioregulators
IDENTIFICATION AND QUANTIFICATION OF BIOACTIVE GIBBERELLINS BY GC-MS IN JAPANESE PEAR FRUIT (PYRUS PYRIFOLIA NAKAI) |
| Authors: | C. Zhang, K. Tanabe, M. Mori, H. Tani, H. Nakajima, S. Wang, J.H. Choi |
| Keywords: | gibberellins, GC-MS, quantification, fruit growth, Pyrus pyrifolia, Japanese pear |
| Abstract:
To clarify the roles of GAs in fruit development of Japanese pear, the bioactive GAs in fruit were identified and quantified by GC-MS. Besides the GA3 identified previously, GA1 and GA4 were also identified in this study. In our previous report, we observed that there were highly significant differences in sink strength between fruit of the cultivars 'Atago' and 'Shinkou'. The analysis of endogenous gibberellins revealed that 'Atago' fruit has much higher levels of GA1, GA3 and GA4 than 'Shinkou' fruit during fruit development, particularly during the early period of fruit growth. The results strongly indicated that the levels of GA1, GA3 and GA4 are closely related to the cell division of fruit during the period of cell division and fruit enlargement during the period of rapid fruit growth. | |
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