تقويم رد فعل طرز وراثية مبشرة من الحمص إزاء مرض لفحة الأسكوكيتا حقليا

Abstract EN

The work aimed to test the reaction of five promising chickpea genotypes (FLIP99-66, FLIP00-18, FLIP00-38, FLIP99-34, FLIP99- 46) against Ascochyta blight disease in the field, using artificial inoculation during 2010 and 2011 seasons.

Plants were inoculated with spore suspension of three pathotypes (1, 2 and 3) of Didymella rabiei separately, and with their mixture.

Incidence, disease severity (1-9 scale) and yield reduction (%) were determined.

Field results showed that the mixture of the three pathotypes was more virulent than Pathotype-3 alone.

FLIP99-66 and FLIP99-34 genotypes were less affected, whereas lowest incidence and severity degrees were recorded when inoculated with the three pathotypes separately, and with their mixture.

These two genotypes could be adopted as high yielding and resistant chickpea varieties, and they could be registered as chickpea varieties for release to farmers, after confirming their resistance to the more virulent pathotypes in Syria (pathotype-4) under plastic house conditions.