A transcriptional fusion between 35s promoter and nearly full length hag1 cdna was constructed and transformation was performed through agrobacterium using root expantso the first whorl organs of transgenic plants flowers are carpel - like organs with stigmatic papilllae and a few ovules 转基因植株花的表型类似与ap2突变体，其第一轮花器官萼片具有心皮的特征，顶端产生柱头状的乳突，边缘有胚珠产生。
