บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effects of low temperature on mycelial growth and spore germination of Botrytis cinerea in vitro and on its infectivity to stored chicory.

Tian ShiPing;

Acta Phytopathologica Sinica Year: 2001 Vol: 31 Issue: 1 Pages: 56-62 Ref: 13 ref.

2000

บทคัดย่อ

Effects of low temperature on mycelial growth and spore germination of Botrytis cinerea in vitro and on its infectivity to stored chicory.

The effects of low temperature ranging from 20 deg C to -4 deg C on mycelial growth, the conidial germination of B. cinerea in culture and its infectivity to stored chicory (Cichorium intybus cv. Radicchio di Chioggia) were investigated. Although temperatures below 0 deg C could inhibit the mycelial growth and delay the conidial germination, B. cinerea was able to grow and germinate on PDA and to infect chicory even at -4 deg C. Germination rate reached 100% after 14 days and mycelial diameter was 10 mm after 24 weeks at such temperature. No decay was found in chicory kept at -4 deg C before 8 weeks and there was very low disease incidence in chicory stored at -2 deg C in 6 weeks of storage. After 12 weeks of storage, disease incidence reached 77% and 71% with a disease severity score of 37 and 31, respectively, which may be related partly to freezing injury of chicory stored at such temperatures.