CAJ | 학술논문

采用定点观察,运用杂交指数估算、花粉/胚珠比(P/O)测定、套袋授粉等方法,对关苍术的花部综合特征及繁育系统进行研究。结果表明：种群花期为7月下旬至9月初,单花序花期为12~17 d,小花日开放高峰期为早上7：00~8：00；花粉活力最高(90％以上)在开花后2 h 以内,而此时其柱头尚无可授性,柱头在花开48~72 h 以内具有较强可授性；花粉/胚珠比为6690,杂交指数为5,繁育系统为专性异交,优势访花者为蜂类和蝇类；套袋和授粉实验结果表明关苍术不存在无融合生殖现象,自交和同株异花结实率很低,其繁育系统以异交为主。通过关苍术花部综合特征和繁育系统的研究,进一步了解其生物学特性,为关苍术资源保护和人工培育提供了理论基础。
채용정점관찰,운용잡교지수고산、화분/배주비(P/O)측정、투대수분등방법,대관창술적화부종합특정급번육계통진행연구。결과표명：충군화기위7월하순지9월초,단화서화기위12~17 d,소화일개방고봉기위조상7：00~8：00；화분활력최고(90％이상)재개화후2 h 이내,이차시기주두상무가수성,주두재화개48~72 h 이내구유교강가수성；화분/배주비위6690,잡교지수위5,번육계통위전성이교,우세방화자위봉류화승류；투대화수분실험결과표명관창술불존재무융합생식현상,자교화동주이화결실솔흔저,기번육계통이이교위주。통과관창술화부종합특정화번육계통적연구,진일보료해기생물학특성,위관창술자원보호화인공배육제공료이론기출。
The study on floral syndrome and breeding system of Atractylodes japonica was carried out with the method of fixed-point observation,pollen-ovule ratio (P/O),out-crossing index,bagging pollination,in order to provide the theoretical basis for its resource protection and artificial cultivation.The results showed that flowering pe-riod of populations was from late July to early September,the life span of individual inflorescence was 12-17 d,and the peak period of dally flowering for floret was at 7:00 -8:00 a.m.Pollen vitality was the highest(above 90%) within 2 h,while stigma was no receptivity and its receptivity was the highest after flowering 48-72 h.The P/O ra-tio was 6 690,hybrid index was 5,breeding system was xenogamy,and the maln floral visitors were bees and flies.There was no apomixes based on bagging and pollination studies,inbred and geitonogamous seed setting rate was low.So,the outcrossing was the major breeding system of A .japonica .