استخدام مستخلصات الفطر penicellium chrysogenum في إنبات و نمو بادرات النارنج

الملخص EN

This study was included the using of filtrate of Penicellium chrysogenum which classified previously by using PCR technique in citrus seeds treatments, and aim to study its effect on percentage and duration of germination, chlorophyll ratio in leaves, dry weight for shoot and root.

The results showed that concentration 30% of P.

chrysogenum filtrate was superior compared with other treatments and gave 87% of germination percentage, 32 days of germination duration, 8 .67 leaf.plant-1 and 17.67 cm plant height compared with 34%, 39 days, 4.67 leaf.plant-1 and 8 cm in control treatment respectively.

The results of study also showed that P.

chrysogenum filtrate had significant effect on citrus seedlings growth parameters.

The concentration 30% of filtrate showed a significant differences in plant height to be 9.76 cm, average of leaves number 7.3 leaves, dry weight of shoot 348 mg and root 266 mg/plant and chlorophyll percentage 41.33% compared with control treatment which showed 5.67 cm, 4 leaves, 244 mg, 201 mg and 29.67% respectively.

The study of effect of growth media on percentage and duration of germination was applied too by using the best concentration of 30%, the results showed that Petmose with soil (1:1) media culture showed the highest germination percentage 86.60% compared with control treatment which gave 46.60%.

Meanwhile, the media culture contained Petmose showed the best results in leaves number, duration of germination and chlorophyll percentage compared with other treatments.

This study illustrated highest economical value because every kilogram of citrus seeds used to non-graft seedling production achieved 3.8 million dinar and 10 million dinar if it used to produce graft seedlings.