Effect of Pythiumaphanidermatum Fungus, Quality of Irrigation Water and their Interaction in the Percentage of Seeds Germination and Spinach Content of Gibberellic acid(GA3) and Zeatin hormones

Abstract

The study results showed the superiority radial growth of the fungus Pythium aphanidermatum indistilled water treatment and the river water treatment where reported 4.50 and 4.48 cmrespectively, compared to water drainage treatment, which was 4.06 cm . The results of the effect ofinteraction between the fungi and the quality of irrigation water in the percentage of germination ofthe spinach seeds and Weights of Gibberellic acid(GA3) hormone and Zeatin hormone to superiorityof control treatment and the river water treatment, which amounted to 99.22% and 95.33 and 0.5120micro gm/gm weight of seedling respectively significantly compared to all treatments, and that thehighest percentage of death after seedling emergence was 100% in the P. aphanidermatum treatmentand water drainage treatment significantly uperior on all Treatments.Notes from the results of the effect of fungus that control treatment (no fungus) increasedsignificantly the percentage of seed germination and weights of Gibberellic acid(GA3) hormone andZeatin hormone amounting 89.85% , 85.93 and 0.4302 micro gm/gm weight of seedlingrespectively, compared to the P.aphanidermatum treatment, which was 35.62% ,72.35 and 0.3486micro gm/gm weight of seedling respectively and in the order,While appeared a higher percentageof death after seedling emergence in the P. aphanidermatum treatment amounting 92.82%significantly superior compared to the control treatment (nofungus), which was 7.89%.This tudyshowed the effect of the quality of irrigation water to nthe river water treatment worked to asignificant increase in the percentage of seeds germination and weights of Gibberellic acid(GA3)hormone and Zeatin hormone amounting73.21% , 89.21 and 0.4574 micro/gm weigh tof seedlingrespectively compared to the water drainage treatment, which were 52.25% , 69.07and 0.3214microgm weight of seedling respectively and in the order,The study also showed that water drainagetreatment has worked to increase the percentage of the death after seedling emergence amounting56.66% compared to the river water treatment, which was 44.04%.