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KMID : 0613820090190060832
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Journal of Life Science
2009 Volume.19 No. 6 p.832 ~ p.835
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Factors Involved in Rooting Response of M.9 (Malus domestica Borkh.) Dwarf Apple Rootstock to Stem Etiolation
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Kwon Soon-Il
Kim Mok-Jong
Paek Pong-Nyol
Nam Jong-Chul
Choi Cheol
Kang In-Kyu
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Abstract
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The main objective of this research was to improve rooting of M.9 apple rootstock through layering time, shading, layering material and water content of the layering part. Among the treatments, rooting was improved by mother plant shading or an earlier covering (layering in shoot length 2 ㎝) of shoots. Rooting and root growth of sawdust, chaff or vermiculite treatments were significantly higher than those of the control (soil). In the study of layering material water content, -40 ㎪ treatment increased rooting ratio, number of roots and root growth compared to -60 ㎪ treatment and control. These results suggest that early-covering, layering with sawdust, chaff, or vermiculite, and keeping the water content in the layering part at -40 ㎪ could improve rooting and root growth in M.9 rootstock propagation.
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KEYWORD
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Apple, dwarf rootstock, rooting, layering
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