Intergeneric hybridization of marguerite (Argyranthemum frutescens (L.) Sch. Bip.) and Roman chamomile (Chamaemelum nobile (L.) All.) using ovule culture and confirmation of hybridity

利用胚珠培养进行玛格丽特 (Argyranthemum frutescens (L.) Sch. Bip.) 和罗马洋甘菊 (Chamaemelum nobile (L.) All.) 的属间杂交并确认杂交性