TY  - BOOK
AU  - SANTOKH Singh
TI  - Studies on strains and strain interaction in citrus greening
U1  - T 634.3 S15S 
PY  - 1991///
CY  - Ludhiana
PB  - PAU
KW  - CITRUS FRUITS -- DISEASES
KW  - BACTERIAL DISEASES OF PLANTS
KW  - CITRUS GREENING
KW  - PL. PATHOLOGY
KW  - VIRUS. CITRUS
N2  - On the basis of visual symptoms and quantity of greening marker substance (GMS), twelve sweet orange trees of cultivar Blood Red were selected One tree exhibited moderate symptoms, four severe sYllptoms and seven did not show visual symptoms of the diseas
ER  -