我国东北寒冷地区几个茶藨子野生种花器研究

Studies on Flower Organs of Some Wild Ribes Species in Northeast China

对分布于我国东北寒冷地区野生茶藨子属植物7个种的花器结构进行观察研究。结果表明:分为单性和两性花2种类型,雌雄异株,花序总状,单生和簇生。花器的萼片发达,着不同颜色,似花冠。单性花的花瓣很小或呈退化状态,无明显花冠;雄性花花药饱满,花粉量大,有短花丝,柱头较小,无子房;雌性花雄蕊较小,近乎无花丝,子房明显发达。两性花的花瓣为萼片2/3大小,直立抱合,抱被雄蕊,雌蕊高于雄蕊,花瓣略高于雄蕊,萼片反卷,在萼片、萼筒、子房、花柄上不同程度着生茸毛、腺点或刺毛。

The flower organs of 7 Ribes species distributing in northeast China were observed.The results indicated that there were two types of flowers of the species,unisexual and bisexual.The plants were dioecious,the inflorescence was raceme,solitary or clustered.The sepals were developed with different colors,just like the corolla.Unisexual flower petals were very small or degraded,and had no distinct corollas;Male flowers had developed anthers with a large amount of pollen,had short filaments,had small stigmas and had no ovaries;Female flowers had small stamens,almost had no filaments,and had obviously developed ovaries.Bisexual flowers had petals 2/3 the size to sepals,vertical cohesion.Stamens were hold inside.Pistils were higher than stamens.Petals were slightly higher than stamens.Sepals were reflexed.There were hairs,glands,or bristles in different levels on the sepals,calyx tubes,ovaries and pedicels.