病害短信
Pythium aphanidermatumによるパパイア根腐病（新称）
2025 年 91 巻 2 号 p. 71-75
詳細
2025 年 91 巻 2 号 p. 71-75
In Saitama Prefecture, green papaya cultivation areas are rapidly increasing. Green papaya is harvested before the fruit is ripe and used as a vegetable. Wilt and root rot were found on 3-month-old papaya plants during the fruiting period in July and August in several fields in Saitama Prefecture in 2022 and 2023. A Pythium sp. was predominantly isolated from diseased tissues and identified as P. aphanidermatum based on morphological characteristics and nucleotide sequences of ITS region of rDNA and coxI genes. This is the first report of P. aphanidermatum causing disease on papaya trees in Japan.
