An experiment was conducted to investigate the effects of different scion-rootstock combinations on the contents of aroma components in flue-cured tobacco leaves by taking tobacco varieties NC297 and Changbohuang as scions and varieties ZY90 and Jinxing 6007 as rootstocks. The aroma component contents in ungrafted and grafted seedlings were compared. The results showed that: 1) The aroma component contents in grafted NC297 exhibited dominance over their parents, and those in grafted Changbohuang were between those in their parents. 2) Comparing with scion seedlings, the aroma component contents in leaves of grafted tobacco increased; in grafted NC297 seedlings, the combination with ZY90, and in grafted Changbohuang seedlings, the combination with Jinxing 6007 increased higher. 3) Scions significantly affected the aroma component contents in leaves of grafted tobacco; for the same rootstock grafted with different scions, the order of aroma component contents in leaves was consistent with that in scion tobaccos. Therefore, choosing appropriate scion was the key factor for increasing the aroma component contents in flue-cured tobacco leaves, and the selected combinations in this experiment were NC297-ZY90 and Changbohuang-Jinxing 6007.%为明确不同接穗与砧木组合对烤烟香气物质含量的影响,采用NC297和长脖黄为接穗,中烟90(ZY90)和金星6007(6007)为砧木,研究了烤烟自根苗和嫁接苗培育的烤后烟叶香气物质成分含量的差异.结果表明:NC297嫁接烤烟的香气物质含量有超亲优势,长脖黄嫁接烤烟的香气物质含量位于砧木自根苗和接穗自根苗之间；与接穗自根苗相比,不同砧木嫁接后烤烟烟叶香气物质含量增加,在NC297嫁接苗中以ZY90作砧木培育的烤烟烟叶香气物质含量增加的较多,在长脖黄嫁接苗中以6007作砧木增加的较多；接穗对嫁接烤烟的香气物质含量的影响较大,同一砧木不同接穗的烤烟香气物质含量排序与接穗烤烟香气物质含量排序一致.因此,选择合适的接穗是提高烤烟香气物质含量的主要因子,筛选出的高烤烟香气物质的嫁接组合为NC297与ZY90和长脖黄与6007.
展开▼
