Plant species

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host tissue host:plantpathology.tamu.edu

Listing 1 - 10 from 21 for host tissue

Pecan
... weather conditions are favorable, the spores germinate and enter the host tissue. Within 7-10 days new lesions are formed on the host. Lesions formed on the lower leaf surface [Photo] are characteristically ... rot is caused by a soil-inhabiting fungus pathogen that attacks a wide range of host plants including pecan. Roots of pecan tree can be invaded at any time except during ...
plantpathology.tamu.edu

Lespedza
... itself around the stems of lespedeza plants. It produces suckers or haustoria that penetrate the host tissue and serve to extract nutrients from it. When it occurs in a localized area, a ...
plantpathology.tamu.edu

Vegetable Crops Pt1
... can live in the soil for a number of years without a host plant. It infects plants through young rootlets and wounds caused by ... area. Spots enlarge and turn brown to black in color. Diseased tissue dries and the center of the spots fall out, giving the ... consist of circular, black, sunken, cankers varying in size depending on the host plant. When abundant moisture is present, the center of the spot ...
plantpathology.tamu.edu

Vegetable Crops pt 2
... of alternate yellow and green islands in the leaf tissue. Aphids transmit virus particles from surrounding Johnsongrass. Johnsongrass rhizomes serve as the overwintering host for this virus. Early infected plants may ... due to seedling death. Late infection results in poor plant growth and reduced seed formation. Tissue decay does not develop above the soil line unless the weather is extremely wet. ...
plantpathology.tamu.edu

Vegetable Crops - pt 4
... Cercospora cruciferarum and C. atrogrisea): The fungus attacks the cotyledons, leaves, and petioles of the host plant. Lesions are circular with gray, brown or slightly off-white centers with slightly ... fungus - Macrophomina phaseolina): Plants die quickly. Lower stem is gray with internal black flecking of tissue. Most serious when mature plants come under moisture stress. Same as charcoal rot. See ...
plantpathology.tamu.edu

Fruit5
... infection is through natural openings. If the trees have stopped active growth, bacteria enter the host and undergo limited development. However, if the trees are still actively growing, the ... . Dormant sprays have been somewhat effective, the spray is accurately timed to protect the stem tissue during the fall infection period. Rust (fungus - Tranzschelia discolor): Rust occurs on both peach and ...
plantpathology.tamu.edu

SWEET PEA
... moldy growth. Thick-walled, brown resting spores develop within the moldy tissue. Since this is not a serious disease of this host in America, control measures have not been developed. Leaf Spots ...
plantpathology.tamu.edu

GROUND COVERS
... to grow normally and have pale yellow-green foliage. Remove and destroy all infected plant tissue. Avoid overhead watering, overwatering and high temperatures, if possible. Leaf Spots (fungi - Ramularia hedericola, Macrophoma ... Rust (fungus - Puccinia sorghi): The importance of this rust on oxalis is that its alternate host is corn. On oxalis, the rust first appears as neat, yellowish dots near the ...
plantpathology.tamu.edu

Trees Part 4
... A. mellea is almost always preceded by major root injury or other debilitation of the host. Cotton Root Rot (fungus - Phymatotrichum omnivorum): White mulberry has been rated highly susceptible to cotton ... wounds the fungus can then enter the healthy tree and move into the water conducting tissue. Control is obtained by destroying diseased trees immediately. Remove or burn stumps. To prevent spread ...
plantpathology.tamu.edu

Trees Part 5
... theobromae): This fungus is known generally as a weak or facultative parasite with a wide host range. However, in Texas it has caused a rapid death of sycamores. The fungus produces ... not leave branch stubs. Cuts should be made even against the trunk so that callous tissue can grow over the wound. Cuts should be made so that the scarred area will ...
plantpathology.tamu.edu