アブラナ属の種間交雑に関する研究 : II. Brassica oleracea と B.campestris との交雑親和性

松澤 康男

doi:10.1270/jsbbs1951.33.321

アブラナ属の種間交雑に関する研究 : II. Brassica oleracea と B.campestris との交雑親和性

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松澤康男

書誌事項

タイトル別名

Studies on the Interspecific Hybridization in Genus Brassica : II. Crossability in Interspecific Cross, B.oleracea L. ×B.campestris L.
アブラナ属の種間交雑に関する研究-2-Brassica oleracea L.とB.campestris L.との交雑親和性
アブラナゾクノシュカンコウザツニカンスルケンキュウ 2 Brassic

公開日: 1983

DOI

10.1270/jsbbs1951.33.321

公開者: 日本育種学会

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説明

The crossability was investigated in the interspecific cross, B.oleracea×B.campestris, in order to breed mono-genomic hybrids and following progenies in genus Brassica. Among 31 cross combinations examined, pollen gennination index(Table 2, 0≤P.G.I.≤4) ranged from 0.7 to 3.8 with mean value of 2.4. Insufficient pollen germination and pollen tube glrowth was recognized in many crosses. It is pointed out that the interspecific barrier would operate in pre-zygotic process for fertilization. Number of hybrid embryos obtained per pod varied from 0 to 9.5 with mean value of l.2 (Fig.1). Most of them developed to the torpedo stage abot', t 0.4mm long. No hybrid seed was obtained in any cross combination (Table 5). Secondary interspecific barrier was ascertained to turn up in post-zygotic process of embryo development.