ISHS Acta Horticulturae 588: II International Symposium on Cucurbits
USING CHEMICAL CONTROLS TO INHIBITED AXILLARY BUDS OF LAGERNARIA AS ROOTSTOCK FOR GRAFTED WATERMELON (CITRULLUS LANATUS) |
| Authors: | D. Chil Choi, S. Whan Kwon, B. Rai Ko, J. Sik Choi |
| Abstract:
This study was conducted to show how the axillary buds from seedling apex in rootstock was inhibited when used as chemical methods after pinching. Plants treated with the 29.4 mM silver nitrate and 2.74 M hydrogen peroxide inhibited 75% and 80% axillary bud regrowth after the shoot apex pinching on the rootstocks. After 3 weeks of treatments, almost 95% survival ratio of grafted watermelon occurred at 29.4 mM silver nitrates and 2.74 M hydrogen peroxides, while 80% and 73% survival ratio of plant occurred with 58.8 mM silver nitrate and 5.48 M hydrogen peroxide, respectively. There was a possibility the hydrogen peroxide caused the damage of leaf primordia rather than the retardation of axillary bud regrowth. The cutting removal of hypocotyl involving cotyledons did not produce apical buds from shoot apex, while apical buds next to the cotyledons developed into the new shoot system when one of the two cotyledons were cut. The cotyledons of rootstocks accelerated watermelon growth, grafted watermelon plants with one cotyledon and two cotyledons(control group) showed an increase in fresh weight by 2.0 times and 2.7 times, respectively, when compared to plant with all of their cotyledons removed (cutting of hypocotyl). | |
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