Agriculture Reference
In-Depth Information
Fig 15.12 A severe fruit drop caused by a
Phytophthora nicotianae
infection
.
Fig 15.14 A passionfruit stem infected with
Phytophthora nicotianae
.
The pathogen is widespread and affects many other
economically important crops including pineapple,
strawberry, citrus, tomato and tobacco.
Importance
The disease can cause extensive defoliation and serious
fruit losses following heavy storms or prolonged wet
weather. The golden passionfruit used as a rootstock to
combat Fusarium wilt is also resistant to Phytophthora.
The pathogen can completely rot the roots and base of the
vine in susceptible rootstocks.
Fig 15.13
Phytophthora nicotianae
is unable to invade the resistant
rootstock below the graft.
