英语语法分析

A potyvirus was found to be causing rugose and yellow stripe symptoms.

发现了一种引起畸形黄条症状的线状病毒。

Leaf blade base rounded or broadly cuneate; fruit rugose when mature.

叶片基部圆形或宽楔形；成熟时的果具皱纹。

For example, 97.6% of the cultivars had small or medium size leaves and 73.5% had slightly rugose in leaf upper surface.

发现资源间某些性状具有一定的相似性，如叶片大小属于中小叶的比例高达97.6%，叶面大部分为微隆起，占73.5%。