CAJ | 학술논문

2012年对锈叶杜鹃自然居群进行了开花物候及访花昆虫的调查，分析了其开花特性；并运用杂交指数、花粉-胚珠比和人工控制授粉方法，对其繁育系统进行了研究。结果表明，锈叶杜鹃开花时间为2月初至7月，其单花花期、单花序花期及单株花期分别为7.06±2.74 d，12.33±2.37 d和16.17±4.24 d。锈叶杜鹃的雌、雄性器官具有同熟性，但两者的最佳活性时间不同，花粉活力在开花第1天的活力最高，而柱头可授性在开花第4～6天最好。锈叶杜鹃的繁育系统为异交型，自交亲和，需要传粉者；同株异花授粉是其主要的授粉方式。锈叶杜鹃的有效传粉昆虫主要为蜂类，而象甲类、蚁类、叶蜂类昆虫是侵害性昆虫，严重影响其传粉；传粉昆虫访花频率低，可能是导致锈叶杜鹃自然杂交结实率低的主要原因。
2012년대수협두견자연거군진행료개화물후급방화곤충적조사，분석료기개화특성；병운용잡교지수、화분-배주비화인공공제수분방법，대기번육계통진행료연구。결과표명，수협두견개화시간위2월초지7월，기단화화기、단화서화기급단주화기분별위7.06±2.74 d，12.33±2.37 d화16.17±4.24 d。수협두견적자、웅성기관구유동숙성，단량자적최가활성시간불동，화분활력재개화제1천적활력최고，이주두가수성재개화제4～6천최호。수협두견적번육계통위이교형，자교친화，수요전분자；동주이화수분시기주요적수분방식。수협두견적유효전분곤충주요위봉류，이상갑류、의류、협봉류곤충시침해성곤충，엄중영향기전분；전분곤충방화빈솔저，가능시도치수협두견자연잡교결실솔저적주요원인。
The flower phenology and flower-visiting insects of Rhododendron siderophyllum population were investi-gated and studied , and the flowering characteristics was analyzed .Through regulating outcrossing index , pollen-o-vule ratio and artificial pollination , the reproductive system of Rhododendron siderophyllum was studied.The re-sults showed that Rhododendron siderophyllum flowered from the beginning of February to July , the flowering span of individual flower , single flower truss and plant were 7.06 ±2.74 d, 12.33 ±2.37 d and16.17 ±4.24 d re-spectively .The pollens and the pistil matured at the same time at anthesis , but the time of the most vigourous was different.The best pollen vigour was the first day at anthesis and the best pistil receptivity was from the fourth to sixth day at anthesis .The breeding system of Rhododendron siderophyllum was outcrossing with self-compatibility , pollinators were necessary .Geitonogamy was the dominant pollinated method .Bees were the main effective polli-nators of Rhododendron siderophyllum.However , weevil beetles , ants and sawflies were invasive insects , serious-ly affected its pollination .The low frequency of pollinator visiting might be the main reason of the low natural hy-brid seed setting rate .