Relationship Between Susceptibility to Pythium Seedling Blight and Pea Seed Exudates
Pythium ultimum에 의한 묘립고병에 감수성인 완두품종의 종자는 저항성품종의 종자보다 다량의 환원당이 종자분필물내에 포함되었으며 분필속도도 감수성인 완두품종의 종자에서 더 빨랐다. 묘립고병에 저항성인 완두품종의 종자와 감수성인 품종의 종자분필물에서 모두 Raffinose, Meilbiose, Sucrose, Glucose 및 Fructose가 확인되었으나 Glucose와 Sucrose는 감수성 품종의 종자분필물에서 더 많이 검출되었다. Pythium ultimum균은 감수성인 종자 및 종자분필물에서 더 잘 자랐다.
Seeds of pea cultivars susceptible to damping-off caused by Pythium ultimum produced sugars intheir exudates in half the time required for resistant cultivars. Also, the amount of reducing sugars was much greater in seed exudates of susceptible than resistant cultivars. Raffinose, melibiose, sucrose, glucose, and fructose (but not maltose, xylose or ribose) were identified in both resistant and susceptible cultivars, however, more glucose and sucrose were detected in seeds from susceptible than from resistant cultivars. Pythium ultimum grew more profusely around seeds from, and in exudates of, susceptible than resistant cultivars.