The Effect of Cutting Root on Quantitative Traits and Quality Traits in Helianthus tuberosus L.
As the main raw material for bio-ethanol and inulin industry,how to raise the tuber biological yield and quality are the research focus of jerusalem artichoke (Helianthus tuberosus L.).In the experiment,red skin jerusalem artichoke were used as material and the effects of root cutting on tuber biomass and quality in Helianthus tuberosus L.under field environment were studied by designing two root cutting stages (vegetative growth stage and squaring stage) and five root cutting radius (0,20,40,60,80cm).The results showed that cutting decreased the tuber number no matter in reproductive stage or vegetative growth phase.Its number increased with the increasing of cutting radius.The minimum number of tuber reached 81.67 in the treatment of 20 cm during Squaring stage.Cutting radius of 20 cm and 40 cm made the number of leaf and flower decreased,but in the other two treatmetns the number of leaf and flower were increased.In the treatment of 20 cm during squaring stage,the tuber biomass reached the maximum,which was 447.48 g · plant-1.
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