广西薏苡资源性状分析与分类

CHARACTER ANALYSIS OF GUANGXI JOB'S TEARS RESOURCES AND THEIR TOXMOMY

广西薏苡资源丰富，包括原始类型水生薏苡、野生薏苡和栽培薏苡。这三者的柱头色均有红、白和淡红之分，并与芽鞘、叶鞘、茎的颜色相关，可作为分类的主要依据。水生薏苡不同于野生薏苡的是其叶片长窄、叶面有刺毛，花药无花粉；授以野生薏苡花粉不结实。野生薏苡的壳厚、壳重和出糙率均明显不同于栽培薏苡，且壳面无脉纹，栽培薏苡则有。笔者据收集的广西薏苡１３４个居群，分类为４种９变种，并认为广西桂南和桂西南是薏苡起源中心之一。

Job's tears resources in Guangxi include primitive water job's tears, wild and cultivated job's tears. The stigma color of these species are white,red and light red and interrelated with the colour of coleoptile,leaf sheathand culm,which are important morphologic basis for the subspecies classification. Water job's tears has long,narrow snd setaceous leaves and pollen abortion,whieh are different from that of wild job's tears,Hybrid between the two species has not been obtained. Wild job's tears are different from cultivated ones in hull thickness,hull weight, Percentage of dehulled yield and no veins on hull surface. According to 134 samples collected from different habitat,the author considered job's tears resoures in Guangxi could be classified into 4species and 9 subspecies. Guangxi would be one of the origin al site of cultivated job's tears.