رد فعل هجن خيار مطعمة على القرع الهجين و نموها إزاء مرض الذبول الفيوزارمي

الملخص EN

The study was conducted during the 2013/14 season, in a farm at Baniyas region, Tartous governorate, Syria, to evaluate the growth and reaction of two cucumber hybrids (Amir F1 and Potenza F1) grafted on squash hybrid (TZ 148 F1) rootstock to infection with fusarium wilt disease (Fusarium oxysporum).

The results showed a significant increase in plant height of non-grafted hybrid cucumber cv.

Amir F1 as compared to the hybrid cucumber cv.

Potenza F1 whether non-grafted or grafted on the squash hybrid TZ 148 F1 not artificially inoculated with the pathogen F.

oxysporum.

Artificially inoculated non-grafted cucumber hybrid Amir F1 with the pathogen caused a significant reduction in plant height, as compared with non-grafted and un-inoculated cucumber hybrid.

Results also showed that the number of leaves of un-inoculated cucumber hybrid Amir F1, grafted or non-grafted on squash hybrid TZ 148 F1, was significantly increased as compared with non-grafted and un-inoculated cucumber hybrid Potenza F1.

However, the number of leaves was significantly reduced in the non-grafted cucumber hybrid Amir F1 inoculated with the Fusarium pathogenic fungus compared with the non-grafted and un-inoculated same hybrid.

Whereas, the total number of leaves was increased significantly in both cucumber hybrids grafted on the squash hybrid following inoculation with the pathogen.

Furthermore, results showed that the foliage fresh weight of both cucumber hybrids grafted on the squash hybrid and inoculated with the pathogen was increased when compared with non-grafted and inoculated cucumber hybrid Amir F1.

Results also showed that there was no difference in root dry weight among all tested treatments.

Disease severity of the non-grafted cucumber hybrid Amir F1 was increased significantly 108 days after planting when compared with all other treatments.

Likewise, the area under disease progress curve of the non-grafted cucumber hybrid Amir F1 was significantly the highest when compared with all other treatments.