Witches'-Broom Of Paulownia Tomentosa L.

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概要

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• The witches'-broom of Paulewnia lomentosa is a very severe disease and has long been known for its characteristic symptoms. The geographical distribution of the disease covers the southern parts of Japan and Korea. It is gradually spreading to other district at present. T. Kawakami stated in 1902 that Gloeosporium Kawakamii Miyabe was the pathogenic fungus of this disease. Hazime Yoshii proved experimentally in 1933 that the disease was not caused by Gloeosporium Kawakamii. The experimental results of the present author are as follows. (1) All eighteen plants from seed were infected hy grafting the diseased scions. (2) Twelve of fifteen plants from root-shoots were infected by grafting the diseased scions. (3) Five of six plants from root-shoots were infected by grafting on diseased stocks. (4) All of three Paulownia Fortunei were infected by grafting the diseased scions of Paulownia tomentosa. From these experiments, it is concluded that the witches'-broom of paulownia is a virus disease, graft infectious, and that Paulownia lomentosa and Paulownia Fortunei are susceptible to the disease.

• 九州大学の論文
• 1951-10-30

著者

• Tokushige Yozan

  Laboratory Of Plant Pathology Faculty Of Agriculture Kyushu University

関連論文

• Witches'-Broom Of Paulownia Tomentosa L.

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