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http://dx.doi.org/10.5352/JLS.2009.19.6.832

Factors Involved in Rooting Response of M.9 (Malus domestica Borkh.) Dwarf Apple Rootstock to Stem Etiolation.  

Kwon, Soon-Il (Apple Experiment Station, National Institute of Horticulture & Herbal Science, KO.A.)
Kim, Mok-Jong (Apple Experiment Station, National Institute of Horticulture & Herbal Science, KO.A.)
Paek, Pong-Nyol (Apple Experiment Station, National Institute of Horticulture & Herbal Science, KO.A.)
Nam, Jong-Chul (Apple Experiment Station, National Institute of Horticulture & Herbal Science, KO.A.)
Choi, Cheol (Division of Plant Biosciences, Kyungpook National Univ)
Kang, In-Kyu (Dept. of Environmental Horticulture, Kyungpook National Univ.)
Publication Information
Journal of Life Science / v.19, no.6, 2009 , pp. 832-835 More about this Journal
Abstract
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 cm) 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 kPa treatment increased rooting ratio, number of roots and root growth compared to -60 kPa 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 kPa could improve rooting and root growth in M.9 rootstock propagation.
Keywords
Apple; dwarf rootstock; rooting; layering;
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