Hi

I suggest for best result, re-inoculate them on PDA for 4-5 days maximum, then see the conidiophores under microscope using sticky-tape technique with one drop of methyl blue.

Good luck

I also got same cultures as endophytes.... but not potent so don't look for their identification

Hi: The read color colony its look like Fusarium graminearum or F. culmorum, but you should confirm that with checking the spore under the microscope. 

Just when it sporelation post a picture for the spore.

You can go for Aspergillus flavus and Aspergillus parasiticus for yellowish green colonies.

The yellow color colonies may be of Aspergillus candidus or A. ochraceus and the red colored colonies of Fusarium graminearum, F. culmorum. Please observe the shape and sizes of conidia under microscope and consult Manual of Aspergilii and Nelson et.al., 1983, "Fusarium species: An illustrated manual for identification" to confirm the species.  

Thank you Oadi Matny and Dr. Sharf Un Nahar. The red colonies are actually F. culmorum.

Hi , The current identification gold standard is rRNA ITS regions nucleotide sequence analysis. 

Hi:

To make taxonomic identification to genus (at least), is necessary to observe micromorphological aspects such as the characteristics of the spores, fruiting structures and structures of resistance.

If any of the isolated not sporulate you can try to cultivate on Synthetic Nutrient Agar  and exposed to cycles of light and darkness. Keep in mind that there are also sterile mycelia.

Good luck