›› 2011, Vol. 23 ›› Issue (1): 46-51.

• 作物科学 • 上一篇    下一篇

施钾对甘薯常规品质性状及其淀粉RVA特性的影响

唐忠厚,李洪民,张爱君,史新敏,徐飞,孙健   

  1. 中国农业科学院 甘薯研究所,江苏 徐州 221121
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-01-25 发布日期:2011-01-25

Effect of potassium fertilizer application on main quality traits and starch RVA characters of sweetpotato

TANG Zhong-hou;LI Hong-min;ZHANG Ai-jun;SHI Xin-min;XU Fei;SUN Jian   

  1. Institute of Sweetpotato,Chinese Academy of Agricultural Sciences,Xuzhou 221121,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-01-25 Published:2011-01-25

摘要: 以1980年建立的砂壤质潮土土壤肥力与肥料效益长期监测基地(徐州点)的长期肥料定位试验为研究平台,研究缺钾(NP)和施钾(NPK)处理对甘薯品质性状和RVA特性的影响。结果表明:施钾(NPK)处理加大不同基因型甘薯品质性状及其RVA特性差异,有利于碳水化合物和蛋白质合成代谢与积累,降低鲜薯块根干率,最高粘度和崩解值等呈极显著差异(P<0.01),表现出甘薯钾素遗传特性的多样性;缺钾(NP)处理,品质性状指标与RVA特征值间表现良好相关性,显示RVA特征参数反映甘薯淀粉品质特性的可行性。

关键词: 甘薯, 钾素, 品质性状, RVA谱

Abstract: The effects of potassium fertilizer application on main quality traits and starch RVA characters of sweetpotato was studied in a long\|term located fertilizer experiment base established in 1980 in Xuzhou. The results showed that potassium treatment (NPK) enlarged the differences of RVA characters and quality among different sweetpotato genotypes, improved carbohydrates and protein synthesis and accumulation, and reduced the dry matter rate of storage root. The peak viscosity (PKV)and breakdown viscosity(BDV) were significantly different (P<0.01), which proved the potassium of the genetic diversity in sweetpotato. No\|potassium treatment (NP) showed significant correlation between main quality characteristics and RVA characters, which showed the feasibility of reflecting quality characteristics of sweetpotato starch in use of RVA characters.

Key words: sweetpotato, potassium, quality trait, RVA character