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MAC无性系是一种有希望的苹果砧木.国际矮生果树协会22届年会上的有关报告曾介绍了这种无性系的主要特性.最近国际园艺学会召开的果树及栽植体系研究和发展第二次讨论会上,又报导了MAC无性系的最新试验资料和观察结果.其中MAC-9即将投入生产使用. MAC-9是矮化砧.母本为M9,植株系从自由授粉的种子而来.其生长势变化范围是从M9至
The MAC clone is a promising apple rootstock The main features of this clone were described in the relevant report of the International Association of Short-dried Fruit Trees at the 22nd annual meeting The recent International Society of Horticultural Research and Development of Fruit Trees and Cropping Systems At the second symposium, the latest experimental data and observations on MAC clones were also reported, of which MAC-9 was about to be put into production. MAC-9 is a dwarfing anvil. The female parent is M9 and the plants are from freely pollinated seeds Its growth potential varies from M9 to