喀斯特山区半夏产量与4个经济性状的相关研究

目的:研究半夏4个经济性状与块茎产量关系，比较分析4个经济性状对半夏块茎产量影响的重要程度，为半夏选育提供依据。方法:将不同来源半夏种质在同一生境下栽培，考查大块茎率、中块茎率、小块茎率、块茎百粒重、单位面积块茎产量，估算性状间相关系数及其对块茎产量通径系数。结果: 块茎产量与大块茎率、块茎百粒重呈极显著正相关，与中块茎率呈微弱负相关，与小块茎率呈极显著负相关。结论: 对半夏块茎产量影响的重要程度依次为块茎百粒重＞小块茎率＞中块茎率＞大块茎率；相对增加大块茎率、块茎百粒重，降低小块茎率，中块茎率控制在一定范围，可显著提高半夏块茎产量。

Correlation Analysis Between the Yield of Chinese Medicine Pinellia Ternata and It’s 4 Economical Properties in Karst Area

(Aim)To study the correlation between several economical properties and tuber yield of pinellia ternata，and compare the impact degrees of these economical properties to tuber yield．The study will offer reference for pinellia ternata selection；(Methods)Plant pinellia ternata from different sources into the common garden，and record the number of 3 type tubers，the weight of hundred tubers，the yield of tuber in unit area，and analyze the correlation coefficient，path coefficient；(Result)The tuber yield correlated significantly with big tuber ratio and hundred tuber weight，slightly negative with small tuber ratio；（Conclusion）The significance of these economical properties to tuber yield is hundred tuber weight＞small tuber ratio＞middle tuber ratio＞big tuber ratio in turn．Accordingly，the yield of tuber will be increased significantly if we increase the big tuber ratio and the hundred tuber weight，reduce the small tuber ratio，and control the middle tuber ratio．