条件的アポミクシス性植物であるニラに見いだされた単為発生能欠如個体

DOI Web Site 被引用文献1件

書誌事項

タイトル別名
  • Non-parthenogenetic Plants Detected in Chinese Chive, a Facultative Apomict.

抄録

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.

収録刊行物

被引用文献 (1)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ