Non-parthenogenetic plants detected in Chinese chive, a facultative apomict
Non-parthenogenetic plants detected in Chinese chive, a facultative apomict
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在韭菜中检测到非单性生殖植物，兼性无融合生殖体
DOI：
10.1270/jsbbs1951.44.143
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
K. Hinata
中科院分区：
文献类型：
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作者：
A. Kojima;T. Kozono;Y. Nagato;K. Hinata
本文对32个韭菜品种和16个韭菜杂种F_1的孤雌生殖程度进行了研究，以期鉴定出“非孤雌生殖植物”。对这些材料的花部性状进行了形态学观察，结果表明，中国奇沃由四个部分组成。两种变形葱马铃薯和A.多枝草属，和各种中间形式。在每个加入或杂交，至少。50个卵子应用Herr的清除技术，在花后5天观察到未授粉的艾德花。以含胚胚珠与具明显可育胚囊胚珠的比例计算，材料的孤雌生殖程度在68%~ 100%之间。虽然大多数杂交种和它们的亲本一样具有高度的孤雌生殖能力。结果表明，在两个杂交种（Hu/F1 -1和Ka/Hu-2）中，孤雌生殖的频率均为100%。”没有观察到。细胞学观察表明，这些非单性生殖的杂种从T.heir双亲那里继承了高度的倍数孢子体生殖。Hu/Fl-1和Ka/I-Iu-2中分别有88%和78%的胚珠为倍数孢子体。这表明配子体无融合生殖的两个基本组成部分。apomeios.is韭菜的单性生殖与孤雌生殖既有遗传上的区别，也有发育上的区别。
We evaluatod the degree of parthenogrenesis in 32 acccssions and 16 F1 hybrids of Chinese chive, a facultatively apomictic crop, with a view to idcntifying' non-parthenog'enet, ic plants'. Morphological observations on flower traits of the accessions have revealed that Chinesc chivo consists. of two morphospccios, Allium. tuberosum Rot.tl. and A. ramosum L., and various intermodiatc forms. In each accession or hybrid, at least. 50 ovulos.' of unpollinat.ed flowers were obs.erved five days after anthosis by the aplication of Herr's clearing technique. The degree of parthcnogenesis, calculated as thc percentaoe of ovules containing embryos to ovules with an apparontly fertile embryo sac, ranged between 68 % and 100 % among' the accessions. Although most of the hybrids were as highly parthenogenetic as their parental accos.'sions, in two hybrids (.Hu/Fl-1 and Ka/Hu-2) parthenogcnes'is was.' not observed. These non-parthenog'enetic hybrids, however, inherited a high degree of diplospory from t.heir parents' as cytological observations showed that. 88 % of the ovules were diplosporous in Hu/Fl-1 and 78%in Ka/I-Iu-2. Thes.e fact, s indicatc that two essential components of gametophyt.ic apomixis.', apomeios.is and parthenogcnesis, can be disting'uished both g'enetically and developmentally in Chinese chive.