稻属和假稻属植物外稃表面乳突结构的研究

Analysis on the Structures of Papilla of Lemma in Oryza and Leersia

用扫描电镜对稻属植物 2 1个种和假稻属植物 2个种的外稃表面乳突作了观察。根据乳突的形态特征 ,将乳突分为 6类 ,即双峰乳突、多向双峰乳突、瘤峰乳突、四峰乳突、凹痕乳突和假稻属的嵌硅双峰乳突。根据双峰距、垭深、距 /深比和峰角度等性状 ,将双峰乳突分为锐型和钝型的两种类型。

The structures of papilla of lemma in 21 species of Oryza and 2 species of Leersia were observed by scanning electron microscopy. The structures were classified into 6 kinds including bi peaked tubercle, multi peaks tubercle, warty peaked tubercle, four peak tubercle, trace tubercle, and inlaid silica peak tubercle according to morphological structures of papilla. The bi peaked tubercle includes acute type and obtuse type by means of bi peaked distance (BPD), col distance(CD), ratio of BPD/CD and peaked angle(PA). The relationship between the structures of papilla and classification of Oryza and Leersia and lemma hairs are discussed.