中文摘要：

为了探讨不同苦荞[Brassica integrifolia（West）O.E.Schulz apud Urb.]品种在不同地点种植下的子粒膳食纤维变异情况和不同品种与基本生态因子的相关性,以7个苦荞品种在全国荞麦主要产区17个不同地点进行栽培试验,测定所得子粒中膳食纤维含量。结果表明,供试7个苦荞品种在17个地点种植下的子粒总膳食纤维（TDF）、不溶性膳食纤维（IDF）、可溶性膳食纤维（SDF）含量变异范围分别为11.68%~24.13%、7.96%~20.05%、1.02%~10.65%。TDF、IDF含量在品种间及地点间的差异均达极显著水平（P〈0.01）;SDF含量在品种间差异达极显著水平（P〈0.01）,在地点间差异不显著（P〉0.05）。Scott-Knott聚类分析显示,以苦荞子粒TDF含量对品种和地点进行分类,可将供试品种分为3类,参试地点分为2类;以IDF含量对品种和地点进行分类,供试品种可分为2类,地点可分为5类;以SDF含量对品种进行分类,供试品种可分为3类。相关性分析表明,苦荞子粒膳食纤维含量与纬度、海拔、生育期均温均无显著相关。

英文摘要：

To explore the variation of dietary fiber content in different tartary buckwheat [Brassica integrifolia（West） O. E. Schulz apud Urb.] cultivar and different production area and its correlation with basic ecological factors, 7 tartary buckwheat cultivars were planted at 17 different locations of the main buckwheat production area across the country. The kernel dietary fiber content was determined. The results showed that the variation range of total dietary fiber（TDF） content, insoluble di- etary fiber（IDF） content, and soluble dietary fiber（SDF） content in the selected tartary buckwheat kernels were 11.68%~ 24.13%, 7.96%~20.05%, 1.02%~10.65%, respectively. The difference of TDF content and IDF content was very significant（P0.01） among different tartary buckwheat cultivars and different production area. The difference of SDF content among dif- ferent tartary buckwheat cultivars was very significant（P0.01）, but no significance（P0.05） was existed among different pro- duction places. Scott-Knott clustering analysis showed that the cultivars could be classified as 3 categories while the location could be divided into 2 groups based on the TDF content in tartary buckwheat kernel. The cultivars could be classified as 2 categories while the location could be divided into 5 groups based on the IDF content. The cultivars could be classified as 3 categories using SDF content as indicator. Correlation analysis indicated that there was no significant correlation between di- etary fiber content and latitude, altitude and mean temperature of the growth period.