Patogenicidade de Helicotylenchus dihystera (Cobb) Sher em Theobroma cacao L.
The patogenicity of the spiral nematode, Helicotylenchus dihystera (Cobb, 1893) Sher, 1961 to cocoa, Theobroma cacao L. var. "Catongo" was studied under greenhouse conditions. Plants grown in steam sterilized soil were inoculated with three levels of inoculum namely 10, 100 and 1000 nematodes per plant and were compared with uninoculated control. Plants inoculated with 1000 nematodes per pot were characterized by stunting. Their root systems were reduced and their dry root weight was significantly less than the control. Survival studies in the absence of the host revealed that 20 per cent of the initial nematode population could survive at the inoculum levels of 1000 nematodes per bag. In the 10 and 100 levels, the nematodes completely disappared 188, days after inoculation
| Main Authors: | , |
|---|---|
| Format: | biblioteca |
| Published: |
1980
|
| Subjects: | THEOBROMA CACAO, NEMATODOS DE LAS PLANTAS, PODER PATOGENO, HELICOTYLENCHUS DIHYSTERA, CULTIVAR CATONGO, |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|