Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:disease
|
| gptkbp:affects |
pear trees
|
| gptkbp:causedBy |
phytoplasma
|
| gptkbp:controls |
vector control
use of resistant rootstocks |
| gptkbp:firstReported |
1940s
|
| https://www.w3.org/2000/01/rdf-schema#label |
pear decline
|
| gptkbp:symptom |
stunted growth
leaf yellowing premature leaf drop rootstock bark necrosis |
| gptkbp:transmittedBy |
gptkb:pear_psylla
|
| gptkbp:分布地区 |
gptkb:Europe
gptkb:North_America |
| gptkbp:bfsParent |
gptkb:pear_(Pyrus_communis)
|
| gptkbp:bfsLayer |
6
|