## 3 Results and Discussion  
Statistical Algorithm for Mycelial Characteristics and Antagonistic Capacity of Trichoderma spp. against Moniliopthora roreri  
Figure 1 presents the formation of three groups as a function of four variables: lag phase, mycelial growth, antagonistic ability against _M. roreri_ (MRCP) and _M. roreri_ (MMCA). Figure 1a shows that the cumulative inertness amounted to 85.5%, while Figure 1b shows that the cumulative inertness amounted to 84.8%. Figure 1: Factorial plots of mycelial characteristics (lag phase and mycelial growth) and antagonistic ability of _Trichoderma_ spp. against two strains of _M. roreri_ are illustrated. (**a**) PCA biplot for mycelial characteristics and antagonistic ability of _Trichoderma_ spp. against _Moniliopthora roreri_ grown on PDA medium. (**b**) PCA biplot for mycelial characteristics and antagonistic ability of _Trichoderma_ spp. against _Moniliopthora roreri_ grown on MEA medium. Figure 1a indicates the presence of the 50 growths of _Trichoderma_ spp. corresponding to the inoculation of the 50 strains on PDA plates. The formation of the groups was as follows: Group 1, \"green color\", formed by 10 varieties of _Trichoderma_ spp. (E1, E2, E3, E4, E5, E6, E7, E8, E9, E10) that indicated the strongest relationship with the mycelial growth characteristic; Group 2, \"purple color\", formed by 20 varieties of _Trichoderma_ spp. (E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E41, E42, E43, E44, E45, E46, E47, E48, E49, E50), that presented the highest values of antagonistic capacity against \(M\). _roreri_ (MCRP) and the lag phase; and Group 3, \"red color\", was made up of 20 varieties of _Trichoderma_ spp. (E21, E22, E23, E24, E25, E26, E27, E28, E29, E30, E31, E32, E33, E34, E35, E36, E37, E38, E39, E40) and showed the relation with antagonistic capacity against \(M\). _roreri_ (MMCA). The _Trichoderma_ strain E22 represented in the center of Group 3 had a significant contribution in the second dimension of the biplot and was consolidated as the strain grown on PDA with the highest degree of antimicrobial activity against the two specific strains of \(M\). _roreri_. On the other hand, Figure 1b shows the presence of the 50 growths of _Trichoderma_ spp. corresponding to the inoculation of the 50 strains on MEA plates. The groups were distributed as follows: Group 1, \"green color\", made up of 10 _Trichoderma_ spp. (E1, E2, E3, E4, E5, E6, E7, E8, E9, E10), with the highest relationship with the lag phase and mycelial growth; Group 2, \"purple color\", formed by 20 varieties of _Trichoderma_ spp. (E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E41, E42, E43, E44, E45, E46, E47, E48, E49, E50) with a greater relation to the lag phase; and Group 3, \"red color\", formed by 20 varieties of _Trichoderma_ spp. (E21, E22, E23, E24, E25, E26, E27, E28, E29, E30, E31, E32, E33, E34, E35, E36, E37, E38, E39, E40), which presented the relationship with antagonistic capacity against \(M\). _roreri_ (MMCA and MCRP). In this culture medium, the results showed that four strains (E25, E29, E30 and E39) presented the optimal mycelial characteristics, evidencing a close relationship of antagonism against to the two specific strains of \(M\). _roreri_. Several _Trichoderma_ strains have been extensively studied as biological control agents against a _wide_ range of soil and airborne plant pathogenic fungi. The biodiversity of the _Trichoderma_ spp. species reveals dynamic characteristics of antagonistic capacity and rapid mycelial growth, which emerge from several attributes, such as the competition for nutrients, the production of antibiotic substances, and resistance to inhibitors and the decomposition of organic substances [27]. The synthesis of antifungal compounds that damage the cell wall of the pathogen causes mycopparasitism, leading to the arrest of its growth and a higher percentage of inhibition [28]. These characteristics can be modified by biotic factors determined by genetic variability or by abiotic conditions related to environmental interactions.