CAJ | 학술논문

对数珠珊瑚的花器官发生和子房的发育过程进行了观察.结果表明:(1)数珠珊瑚花被呈2/5螺旋状发生,远轴侧的1枚先发生,其次为近轴侧的1枚发生,最后侧方的2枚花被几乎同时发生,第3枚花被在靠近第1枚的位置发生,第2枚和第3枚之间有1个空隙;(2)4枚雄蕊是同时发生的;(3)心皮发生于分生组织的远轴侧,心皮原基形成后,向上向轴生长,在子房成熟前在近轴侧非正中位形成1个孔,该孔为心皮最终愈合前的残迹,到子房成熟时,因子房的生长孔被挤压缩小,在进一步的生长过程中愈合.子房由1枚心皮构成;(4)从子房发育过程的切片看,该植物的胚珠是在子房发生后不久发生的,子房上的圆孔形成时,从近轴侧的分生组织发生胚珠原基,由胚珠原基分化出珠被与珠心.
대수주산호적화기관발생화자방적발육과정진행료관찰.결과표명:(1)수주산호화피정2/5라선상발생,원축측적1매선발생,기차위근축측적1매발생,최후측방적2매화피궤호동시발생,제3매화피재고근제1매적위치발생,제2매화제3매지간유1개공극;(2)4매웅예시동시발생적;(3)심피발생우분생조직적원축측,심피원기형성후,향상향축생장,재자방성숙전재근축측비정중위형성1개공,해공위심피최종유합전적잔적,도자방성숙시,인자방적생장공피제압축소,재진일보적생장과정중유합.자방유1매심피구성;(4)종자방발육과정적절편간,해식물적배주시재자방발생후불구발생적,자방상적원공형성시,종근축측적분생조직발생배주원기,유배주원기분화출주피여주심.
In this paper the floral ontogeny and the ovary development of Rivina humilis L.were observed.The results showed that (1) the tepal primordia initiated in 2/5 spirals.The abaxial one initiated first,then the adaxial one,finally the lateral two initiated nearly simultaneously.The third one initiated on the position near the first tepal,and there is a gap between itself and the second tepal.(2) The 4 stamineal primordia initiated in one whorl at the same time.(3) The carpellary primordium initiated from the abaxial side of flower primordium;the carpellary primordium grew upwards and towards axis after it was formed,therefore an elliptic orifice was formed at the adaxial position of ovary,which was the remainder of the mouth of ovary before the ovary was fused completely.With the ovary maturing,the orifice was narrowed because of the ovary growth,at last fused completely.The gynoecium is composed of a single carpel.(4) In the series developmental sections of ovary,the ovular primordium was initiated on the adaxial meristem when the mouth of ovary was formed.