コショウの Fusarium 菌による立枯れの発生生態

(1) コショウの感染部位とコショウ枝の感受性

抄録

Three experiments were conducted to assess the sensitivity of injured or non-injured black-pepper to the Fusarium pathogen. Firstly, attempts were made to infect non injured seedlings root at their tips or in their mid-portion. Secondly, injured and non injured sites at seedling stem bases were infected. Finally, for older plants cut branches, differing in age, were infected at the site of the wound. In experiments one and two, all plants died, indicating that they are very susceptible to Fusarium regarding of the infection site. In experiment three old and young branches did not differ in their sensitivities to the fungi.