3种獐牙菜属植物花蜜腺的发育解剖学研究  

Development and anatomy of floral nectary of three species in Swertia L.(Gentianaceae)

作　　者：薛春迎[1] 刘建全[1] 廖志新[1] 何廷农[1] 

机构地区：[1]中国科学院西北高原生物研究所,西宁810001

出　　处：《西北植物学报》2001年第1期112-116,T003,T004,共7页Acta Botanica Boreali-Occidentalia Sinica

基　　金：中国科学院;中组部"西部之光"人才培养计划项目资助

摘　　要：獐牙菜属的红直獐牙菜、抱茎獐牙菜和四数獐牙菜 3种植物花蜜腺都属花被蜜腺 ,其结构相似 ,均由分泌表皮和产蜜组织组成 ,为结构蜜腺 ,是花冠基部薄壁组织恢复分生能力形成的。分泌表皮无气孔器。原蜜汁由蜜腺周围的维管束提供 ,经产蜜组织加工后 ,由分泌表皮外薄的角质层泌出。四数獐牙菜花蜜腺裸露、凸起 ,而另 2种植物花蜜腺凹陷为囊状 ;红直獐牙菜为脱落蜜腺 ,而抱茎獐牙菜和四数獐牙菜为宿存蜜腺。其花蜜腺的性状基本印证了 3种獐牙菜属植物的系统位置。This paper studied on the floral nectaries development and anatomic of three species in Swertia (S.erythrosticta,S.franchetiana,S.tetraptera).The nectaries are perigonal nectary compose of epidermis and nectariferous tissus,thus they belong to structural nectary.The epidermal cell is vacuolized and the stomata doesnt present in there.The superficial layer cell of basic petal becomes matic activity and formes the primordium nectary.The pre nectar may be provided by phloem that is round the nectariferous tissue.The nectar formed in nectariferous tissue is then excreted from the thin wall of the outer tangential of epidermal cell.Tumid nectary of S.tetraptera differences from others.Nectary of S.erythrosticta remains with nectaria caduca,but nectaries of S.franchetiana and S.tetraptera remain with nectaria persistentia.The characters of nectary may show the affinity of section and series in Swertia L.

关 键 词：红直獐牙菜 抱芭獐牙菜 四数獐牙菜 花蜜腺 发育解剖 龙胆科 獐牙菜属 

分 类 号：Q949.776.4[生物学—植物学] Q944.58