Varietal descriptors of sorghum varieties (Sorghum bicolor L. Moench) for registration and breeder's rights

Abstract

The registration and breeder's rights of varieties and hybrids in our country is very low compared to developed countries, however, the generation of this technology is frequent and they are marketed without an official registration. That is why the objective of this work is to characterize two precommercial varieties of sorghum, one with white grain and another with red grain in order to obtain the breeder's right. The characterization was carried out in the experimental fields of the University Center for Biological and Agricultural Sciences of the University of Guadalajara in the spring summer cycle of 2019 on two sowing dates. The methodology that was considered was the technical guide for varietal characterization approved by the International Union for the Protection of New Varieties of Plants UPOV. Central tendency analyzes were performed, the variation within materials was statistically analyzed using dispersion measures for grouped data such as range, variance, standard deviation, coefficient of variation and mean. Which provided the information for the decision of compliance with the main characteristics that allow each variety to be differentiated and to comply with the precepts that it is a new, homogeneous and stable variety.