Study of the effect of Trichoderma fungi and its mutants on germination and morphological traits of wheat and corn seeds

An experiment was conducted to study the effect of biopriming on isolates of Trichoderma fungi )T. harzianum, T. viride, T,atroviride, T. virence and T. konigi) on morphological traits and seed germination of corn and wheat. Effect of the mutation was caused by gamma radiation, to increase their efficiency in biopriming of seeds were compared. Experiment with three levels of inoculation: control (non-inoculation), inoculation with sporulation formulations of wild-type of Trichoderma, and inoculation with mutant isolates of the same species, in a completely randomized design with three replications at the Nuclear Agriculture Research Institute, the Atomic Energy Organization Iran was done. Germination percentage and other traits: longitudinal, fresh and dry weight and vigor index were evaluated based on the ISTA method. Results showed, biopriming corn seeds with the formulation of Trichoderma species (wild-type and mutant), at a probability level of 5%, in dry and wet weight and Vigor index, it was superior to control. In other traits, Improvement was also observed, but there was no statistically significant difference. Wheat germination of fungal treatment was 100%. Length of seedlings primed by fungal treatments was higher. The remaining traits were not statistically significant, but the fungal treatments were better. Overall, the results of this experiment showed, use of biopriming third cereal seeds with Trichoderma fungi improve most of the morphological traits of plants, especially initial stages of development and establishment. Which, of course, is effective on the final performance of the product. Therefore, use of this biological fungus, which has an antagonistic property, to enhance the performance and use instead of chemical pesticides to farmers is recommended.

کلیدواژه ها:

Biopriming ، Wheat ، Corn ، Germination ، Trichoderma