Comparative analysis of maize hybrids based on kernels production
Abstract
The study comparatively analyzed twenty maize hybrids, in terms of kernels production. The maize hybrids were created at ARDS Suceava, and grown for testing under the conditions at ARDS Lovrin. In the study, the names of hybrids SV1 to SV20 were used. Based on the kernel production, the comparative analysis of the hybrids was done (ANOVA test). Each hybrid was analyzed compared to the other hybrids and differences were recorded in terms of statistical safety, p<0.05 (17 combinative analyses), p<0.01 (20 combinative analyses), and p<0.001 (48 combinative analyses). In relation to the mean value of kernel production calculated (KP_m= 1815.395 kg ha-1), nine hybrids were positioned above the average value (SV1, SV7, SV8, SV9, SV11, SV13, SV15, SV16, and SV20), and 11 hybrids were positioned below the average value. The cluster analysis facilitated the grouping of hybrids in the cluster diagram, based on similarity (Coph.corr = 0.777). In cluster C1 (hybrids with a value above the average of the experiment), hybrid SV13 presented the independent position, with the highest level of kernel production. Associated, the hybrids ((SV7,SV1),SV15), respectively (SV8,SV20) were positioned. The results provided valuable information regarding the ranking of the tested hybrids, for the maize breeding program, as well as for agricultural practice.
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