突脉金丝桃的花器官发生及其系统学意义

赵祥, 苏雪, 吴海燕, 张辉, 孙坤

Floral Organogenesis of Hypericum przewalskii(Hypericaceae) and Its Systematic Implications

Xiang ZHAO, Xue SU, Hai-Yan WU, Hui ZHANG, Kun SUN

图版Ⅰ 扫描电镜下突脉金丝桃花器官的形态发生 注：1~2.花原基、苞片的发育及位置;3.第1枚及第2枚萼片原基沿2/5圆周相继发生;4.剩余3枚花萼原基的发生位置及形态;5~6.雄蕊—花瓣共同原基开始发生;7.雄蕊、花瓣原基近同时发生;8~10.雄蕊、花瓣原基进一步发生，心皮原基开始发生;11~12.次生雄蕊原基开始发生 B.苞片；S.萼片；P.花瓣；A.雄蕊；SA.次生雄蕊；C.心皮（字母后的数字代表发生顺序） 下同。

PlateⅠ SEM photomicrographs of floral development in H.przewalskii note：1-2.Initiation of floral primordium and development and position of bract; 3. Initiation position and shape of first pair of sepal primodia;4.Initiation position and shape of remaining sepal primodia;5-6.Initiation position and shape of androecium-petal common primordia;7.Initiation position and shape of petal primordia and stamen primordia;8-10.Further development of stamen and petal primordia and initiation of the carpel primordia;11-12.Initiation and development of the secondary stamen primordia B.Bract;S.Sepal;P.Petal;A.Androecium;SA.Secondary androecium;C.Carpel(The number indicates the initiation sequence of the floral organs after the letters) The same as below.