CAJ | 학술논문

以锥栗品种黄榛为材料,采用石蜡切片技术对其大孢子发生、雌配子体形成和胚、胚乳发育过程进行了研究.结果表明:锥栗为雌雄异花同株果树,多心皮复合雌蕊,中轴胎座,通常有8-10个子房室,每室倒生2枚胚珠;珠心组织中的一个孢原细胞直接发育形成大孢子母细胞,经减数分裂形成的大孢子四分体呈线形,其中靠近合点端的功能大孢子发育成为成熟胚囊;胚囊发育类型为单孢子蓼型胚囊;双受精后,原胚经过球胚、心型胚、鱼雷胚和子叶胚等阶段发育为成熟胚,胚乳呈核型,种子无胚乳.
이추률품충황진위재료,채용석사절편기술대기대포자발생、자배자체형성화배、배유발육과정진행료연구.결과표명:추률위자웅이화동주과수,다심피복합자예,중축태좌,통상유8-10개자방실,매실도생2매배주;주심조직중적일개포원세포직접발육형성대포자모세포,경감수분렬형성적대포자사분체정선형,기중고근합점단적공능대포자발육성위성숙배낭;배낭발육류형위단포자료형배낭;쌍수정후,원배경과구배、심형배、어뢰배화자협배등계단발육위성숙배,배유정핵형,충자무배유.
Embryological studies were carried out on the megasporogenesis, female gametophyte formation, the development of embryos and endosperm by using Huangzhen as the material and taking advantage of paraffin section technology. with polycarpous compound pistils, axile placentas, commonly 8 to 10 loculaments and 2 anatropous ovules in each loculament. An archesporial cell in the nucellus tissue would directly develop into the megaspore mother cell that subsequently formed linear megaspore tetrads. The functional megaspore near the chalazal end developed into mature embryo sac, which was monosporic polygonum-type. After double fertilization, the proembryo would develop into a mature embryo going through globular, heart, torpedo and cotyledon stages. Endosperm is nuclear endosperm and it doesn′t exist in seeds.