Research on accumulation and change rule of sucrose in Helianthus tuberosus Linn under PEG stress

摘要

Based on the "Qingyu No.1" and "Qingyu No.2 "the two Jerusalem artichoke varieties as experimental materials, the Jerusalem artichoke with different concentration of polyethylene glycol, PEG-6000 stress (0,10%,20%,10%) of drought stress on the content of the different parts of the sugar in the treatment of the different time after change were studied; The results showed that: under the stress of PEG, the sugar content in leaf, Qingyu No.1 and Qingyu No.2 all time increases as the stress increases with increasing time; The content in stem, Qingyu No.1 changes in different with stress time increasing, Qingyu No.2 in PEG concentration was 30% and stress 24h the effect is most obvious; the content in root, Qingyu No.1 and Qingyu No.2 with the increase of stress time its content increased.