CAJ | 학술논문

本试验对白花桔梗和紫花桔梗传粉生物学特性进行了比较研究。结果表明，白花桔梗与紫花桔梗只有花冠宽具有显著性差异，花冠长、子房宽、裂片长、裂片宽、裂深、雄蕊长和雌蕊长均无显著性差异；白花桔梗、紫花桔梗的平均单株花粉数分别为5.86×105个和5.05×105个，花粉/胚珠比值分别为2282.3和2195.1，两者均属于兼性异交；白花桔梗与紫花桔梗开花当天花粉活力均达到最大值，开花后第2天柱头可受性均达到最高，两者在花粉活力和柱头可受性上无明显差异；白花桔梗和紫花桔梗在风媒的作用下，传播花粉的距离分别为1.5m和0.8m；昆虫传粉最远距离分别为9.8m和6.5m。本试验通过研究白花桔梗和紫花桔梗传粉生物学差异比较，为今后桔梗育种工作提供理论依据。
본시험대백화길경화자화길경전분생물학특성진행료비교연구。결과표명，백화길경여자화길경지유화관관구유현저성차이，화관장、자방관、렬편장、렬편관、렬심、웅예장화자예장균무현저성차이；백화길경、자화길경적평균단주화분수분별위5.86×105개화5.05×105개，화분/배주비치분별위2282.3화2195.1，량자균속우겸성이교；백화길경여자화길경개화당천화분활력균체도최대치，개화후제2천주두가수성균체도최고，량자재화분활력화주두가수성상무명현차이；백화길경화자화길경재풍매적작용하，전파화분적거리분별위1.5m화0.8m；곤충전분최원거리분별위9.8m화6.5m。본시험통과연구백화길경화자화길경전분생물학차이비교，위금후길경육충공작제공이론의거。
Through the comparative study between white flower Platycodon grandiflorum and purple flower P .grandiflorum on pollination biolo-gy ,the results showed that white flower P .grandiflorum and purple flower P .grandiflorum had significant difference in the width of corolla ,in addition to the length of corolla ,ovary width ,flower lobes long ,lobes broadly ,the length of stamens and the length of pistil ;The average pollen number of white flower P .grandiflorum and purple flower P .grandiflorum was 5.86 × 105 and 5.05 × 105 respectively ,pollen ovule ratio was 2 282.3 and 2 195.1 respectively ,both of white flower P .grandiflorum and purple flower P .grandiflorum all belonged to facultative xenogamy .White flower P .grandiflorum and purple flower P .grandiflorum had no significant difference in pollen vitality and stigma receptivi-ty ,the pollen viability was highest on the first day and the stigma receptivity was the highest on the 2nd day after flowering .In terms of pollina-tion distance ,the white flower P .grandiflorum and the purple flower P .grandiflorum Pollen dispersal could reach 1.5m and 0.8m by wind , 9.8m and 6.5m by insect .By comparative study on pollination biology between white flower P .grandiflorum and purple flower P .grandiflo-rum can provide theoretical basis for future breeding of platycodon .