变叶海棠（M．toringoides（Rehd．）Hughes）无融合生殖胚胎发育的特征与结果  

EMBRYOLOGY CHARACTERISTICS AND RESULTS OF APOMIXIS IN MALUS TORINGOIDES(REHD)HUGHES(3x)

作　　者：廖飞雄[1] 李育农[1] 

机构地区：[1]华南师范大学生物学系,西南农业大学园艺系

出　　处：《江西农业大学学报》1996年第3期287-291,共5页Acta Agriculturae Universitatis Jiangxiensis

摘　　要：对３ｘ变叶海棠（Ｍ．ｔｏｒｉｎｇｏｉｄｅｓ（Ｒｅｈｄ．）Ｈ．）无融合生殖作了胚胎学观察。其无融合生殖方式是体细胞无孢子生殖，胚胎发育具胚囊的复合性、起源空间多位性、发生时间的持续性与滞后性。花粉败育、无融合生殖的结果大多种子败育或早期退化。Embryologyic development of apomixis in Malus toringoides(Rehd. )H. (3x)was stud-ied.The mode of apomixis in the species was confirmed to be Somatic Apospory with thecharacteristics that the complex aposporic embryosacs occurs in the different parts of nucellartissues during the period of flowers opening to young fruit,later than the occurrence of themegaspore,Pollens were found abnomal in the species.Mast apomictic seeds degenerate orfail to develop furthel in the early stage.

关 键 词：变叶海棠 无融合生殖 胚胎学 

分 类 号：S681.990.3[农业科学—观赏园艺]