Scientia Agricultura Sinica ›› 2007, Vol. 40 ›› Issue (1): 70-77 .

• TILLAGE & CULTIVATION·PHYSIOLOGY & ECOLOGY • Previous Articles     Next Articles

Effects of Virus-eliminating and Plant Growth Regulators Ttreatment on the Endogenous Level of Hormone and Root Yield of Sweetpotato

  

  1. 山东农业科学院作物研究所
  • Received:2006-01-18 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10

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Abstract: A field trial was conducted to explore the effects of different treatments, such as virus-free cuttings(VF), cuttings soaking with choline chloride(CC), and leaves spraying with Zhuangfengan(ZFA), on the endogenous level of hormone and root yield of sweetpotato. The present results showed that the dry root yield in the treatment of VF and CC increased by 21.0% and 24.2%, respectively, which was 5.2% increment in the treatment of ZFA. In different treatment, the increment ratio of fresh root yield per day increased significantly. In the treatment of VF and CC, the T/R ratio declined significantly, and the contents of zkinetin (CTKs), indole-3-acetic acid (IAA) and gibberellic acid (GA4) in the leaf increased to some extent, the content of abscisic acid (ABA) reduced, and content of CTKs, IAA, ABA in the storage root also increased. In the treatment of ZFA, the content of GA4 and ABA in the leaf decreased significantly, the content of CTKs,IAA in the leaf and the content of CTKs, ABA,IAA in the root increased.

Key words: Sweetpotato, Virus-free, choline chloride, Zhuangfengan, Storage root, Hormone

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