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世界各苹果生产国在引用M、MM系苹果矮化砧木的同时,均竞相选育适合本国风土条件的矮化砧木。从1973年开始,我们从事矮化砧木的株系选择工作,目的是利用我省丰富的自然资源,选育出既有一定适应性,又能促进接穗品种早结果、早丰产、品质好、便于管理的矮化、半矮化砧木。S19即是继半矮化中间砧S63与极矮化中间砧S20之后通过株系选择又选育出的苹果矮化中间砧木。
The world’s apple producing countries in the reference M, MM Department of apple dwarfing rootstocks, competing breeding dwarfing rootstock suitable for their own terroir conditions. Since 1973, we have been engaged in the selection of dwarfing rootstocks. The purpose is to use the abundant natural resources in our province to breed the early adaptability, promote the early result of scion varieties, Managed dwarfing, semi-dwarfing stock. S19 is the dwarfed intermediate rootstock selected and bred by the lines after the semi-dwarfing intermediate anvil S63 and the dwarfing intermediate anvil S20.