Biology Reference
In-Depth Information
Penicillium gladioli
Blue Mold Rot
,
Penicillium
Dry Rot
of gladiolus, also found in imported
bulbs - scilla, tritonia (montbretia). This is
a storage rot. Light to dark brown sunken lesions
appear on any part of corms with border of the
decayed area water-soaked and greenish. Small
grayish sclerotia are formed, and under moist
conditions masses of blue mold. Dry rapidly
after harvest, 80
F for 10 to 14 days, then store
at low temperature; avoid wounds and bruises;
sort before planting.
Penicillium italicum
Blue Contact Mold
of cit-
rus,
Fruit Rot
. The mold is blue in the older
portion but powdery white at margins. It spreads
readily from fruit to fruit by contact, through
uninjured skin.
Penicillium
Penicillium
Cankers and Diebacks
.
Various species cause blue, green, occasion-
ally pink molds, including the common blue-
green mold on jellies. Some produce antibiotics,
Penicillium notatum
being the one used for pro-
duction of penicillin.
Gliocladium roseum (formerly
Penicillium
roseum
).
Fruit Rot
of citrus and of dates. A pink
mold, found on lemons but not oranges.
Gliocladium vermoeseni (formerly
Penicil-
lium vermoeseni
).
Bud Rot
of palms. The termi-
nal bud is killed and base of leaf stalks rotted.
Affected trees of very susceptible
Washingtonia
filifera
should be replaced with resistant
Washingtonia robusta
, Mexican fan palm. Also
▶
▶
Gliocladium
roseum
).
Fruit Rot
of citrus and of dates. A pink
mold, found on lemons but not oranges.
Penicillium vermoeseni (see
roseum (see
▶
Cankers and Diebacks
.
Penicillium aurantiogriseum
Crown Rot
of
asparagus, a seedling disease recently prevalent
in Washington, following freezing injury. Bright
blue spore masses appear on diseased crowns.
Protect seedlings for winter by slight hilling in
fall; avoid mechanical injury in harvesting; pre-
vent drying out of crowns between digging and
replanting.
Penicillium digitatum
Green Mold
of citrus
fruit,
Clove Rot
of garlic. On lemons and other
citrus, olive-green powdery spore masses,
forming a dust cloud when disturbed, cover fruit
except for a band of white mycelium outside the
green area. Garlic plants are yellow and stunted.
Avoid injury in harvesting and packing. Com-
mercial growers use chemicals in the wash
water to prevent decay.
Penicillium expansum
Blue Mold Rot
of many
fruits;
Soft Rot
of apple, pear, avocado, pome-
granate, Japanese persimmon, quince and feijoa.
The decay on avocados is slow, and often the
affected portions can be trimmed off. This fungus
causes 80 to 90 % of the decay of storage apples.
The rotted portions are light-colored, soft,
watery, with a disagreeable moldy taste and
odor. A few rotted apples spoil all the others in
a container. Use great care in harvesting and
grading to avoid wounds; keep temperature as
low as possible.
Gliocladium
▶
vermoeseni
).
Bud Rot
of palms.
Peniophora
Basidiomycetes, Aphyllophorales
Like
Corticium
but with cystidia.
Chaetoderma luna (formerly
Peniophora
luna
).
Brown Rot
in lodgepole pine, Rocky
Mountain area.
Peniophora luna (see
Chaetoderma luna
).
Brown Rot
in lodgepole pine, Rocky Mountain
area.
▶
Pestalotia
Blights
.
Pestalotia longisetula
Root, Stolon, and Peti-
ole Rot
on strawberry.
▶
Phaeoacromonium
Blights
.
Phaeoacremonium aleophilum
Decline
▶
of
grape.
