循環選抜によるアルファルファ菌核病抵抗性の向上

• 神戸 三智雄

• 藤本 文弘

• 水上 優子

• 稲波 進

• 深谷 勝正

書誌事項

タイトル別名

• Increase of Resistance of Alfalfa to Sclerotinia Crown and Stem Rot through Recurrent Selection.
• Increase of resistance of alfalfa to sc

抄録

Breeding of alfalfa (Medicago sativa L.) for resistance to Sclerotinia crown and stem rot (SCR; causal agent Sclerotinia trifoliorum Eriks.), which is a serious disease in Japan, was started in 1983. Increase of resistance to this disease has been examined following repeated selection of surviving plants from artificially inoculated field plots to the 9th generation. The strains selected for SCR resistance showed a higher resistance than Natsuwakaba and Tachiwakaba which were used as breeding materials and control cultivars. The effectiveness of selection based on the survival rate of progenies increased gradually as generations in which the recurrent selection was performed advanced. Realized heritability was low (h²=0.078) in the 1st and the 2nd generations in which selection was performed but was high (h²=0.364) in the 3rd to 9th generations. It is considered that the selection effect on SCR resistance became higher in the later generations, probably due to the accumulation of genes which have minor or polygenic effects on resistance.

収録刊行物

• 育種学雑誌

  育種学雑誌 47 (4), 347-351, 1997

  日本育種学会

キーワード

• disease resistance

詳細情報

• CRID: 1390282679695543552
• NII論文ID: 130003404760
• NII論文ID: 110001818626
• NII書誌ID: AN10322962
• DOI: 10.1270/jsbbs1951.47.347
• ISSN: 2185291X
• ISSN: 05363683
• NDL書誌ID: 4354702
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4354702
• Web Site: http://www.jstage.jst.go.jp/article/jsbbs1951/47/4/47_4_347/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可