摘要： 选择7个不同肉色的甘薯品种,在不同生育期测定其最长蔓长、分枝数、结薯数、块根干率、块根鲜质量、薯干淀粉、还原性糖、可溶性糖和粗蛋白含量,以研究不同肉色甘薯块根主要经济性状与气象因子的相关性。结果表明,参试甘薯品种的产量性状与气象因子的相关性较高;白肉品种(徐薯28和徐薯18)和紫肉品种(徐紫薯3号)的品质性状与气候因子的相关性较高,黄肉品种(徐薯23和徐0314)和桔红肉品种(徐3228和徐5919)的品质性状与气象因子的相关性较低;多数经济性状日增长量与主要气象因子日增长量关系不大,伴随着日平均气温的增加,单株分枝数增长速度提高,随着日照时数增加,块根可溶性糖积累速度加快,而当降水量增多时,块根还原糖积累速度放缓。

关键词: 甘薯, 经济性状, 气象因子, 相关性

Abstract: Correlation analysis between main economic characters of sweetpotato and meteorological factors were studied in present paper. Several kinds of economic traits in 7 different color,leshed sweetpotato varieties at 5064,78,92,106,120,134 d after transplanting were investigated,and these traits included number of branches longest vine length,number of storage roots, storage root fresh weight , dry matter content , starch content , reducing sugar content , soluble sugar content , crude protein content. The results showed that the yield,elated traits of tested sweetpotato varieties had higher correlation with meteorological factors. The quality,elated traits of white,leshed sweetpotato varieties (Xushu 28 and Xushu 18) and purple,leshed varieties (Xuzishu 3) had higher correlation with meteorological factors while that of yellow,leshed sweetpotato varieties (Xushu 23 and Xu 0314) and orange,leshed sweetpotato varieties (Xu 3228 and Xu 5919) had lower correlation with meteorological factors. For most of tested varieties,the relationship between daily growth rates of the economic traits and main meteorological factors was not evident.

Key words: Sweetpotato, Economic traits, Meteorological factors, Correlationship

中图分类号: 

• S531