园艺学报 ›› 2009, Vol. 36 ›› Issue (10): 1485-1490.

• 观赏植物 • 上一篇    下一篇



  1. (云南农业大学园林园艺学院, 昆明650201)
  • 收稿日期:2009-05-31 修回日期:2009-08-31 出版日期:2009-10-25 发布日期:2009-10-25

Flower Structure and Biological Characteristics of Flowering and Pollination in Iris japonica Thunb.

GUAN Wen-ling*;LI Ye-fang;CHEN Xian;YANG De   

  1. (College of Landscape and Horticuture, Yunnan Agricultural University, Kunm ing 650201,China)
  • Received:2009-05-31 Revised:2009-08-31 Online:2009-10-25 Published:2009-10-25

摘要: 通过田间观察, 运用杂交指数、花粉及柱头活力、花粉/胚珠比、坐果率等指标, 对蝴蝶花
( Iris japonica Thunb. ) 人工种群的花部特征、开花动态及授粉特性等进行研究。在人工栽培条件下, 蝴蝶花2—4月份开花, 群体花期62 d, 单株花期9~28 d, 单花花期36~48 h。雄蕊短于花柱, 花药与柱头相差0132 cm, 在花朵开放的整个过程中雌、雄蕊的相对位置始终不变。杂交指数OCI = 4, P /O值为275.68,结合坐果率结果, 判断其繁育系统属于异交, 部分自交亲和, 需要传粉者。特殊的花部结构可能是蝴蝶花结实率较低的原因。

关键词: 蝴蝶花, 花部特征, 杂交指数, 花粉/胚珠比, 繁育系统

Abstract: A field investigation was conducted on the floral syndrome and pollination characteristics of
Iris japonica Thunb. in artificial populations by continuous observation, out-crossing index, pollen-ovule ra-
tio and fruit-setrat. The main results are as follows: Under artificial culture conditions, the population come
into bloom from Febrary to April and the flowering span among populations is 62 days. The flowering span for
a plant is 9 -28 days. The life span of one single flower was approximately 36 -48 hours. The stamen was
close to the lateral side of the petaloid style and 0.32 cm shorter than the style, and the relative position be-
tween the stamen and style was always unchanged in the whole flowering process. The out-crossing index was
4, P /O was about 275.68, combined with the result of the bagging and artificial pollination experiment, the
breeding system of those species was given priority to out-crossing, part self-compatibility, insects pollinator-
dependent. The special floral structure may be the reasons that those species have a low setting percentage.

Key words: Iris japonica Thunb., floral syndrome, out-crossing index, pollen-ovule ratio, breeding  system