Cluster analysis for phenological and yield variables in 15 crosses of pepper.
The objective of this work was to determine the genotypic or phenotypics differences among 15 single crosses of hot pepper utilizing the cluster analysis.The parents of these crosses were six lines of pepper, three of them were jalapeño type (4, 6 y 118), one was Hungaria nyellow wax type (8), one was a broad type (16) and one wasmulatto (type 130). Crosses were conducted in a green houseat the Universidad Autónoma Agraria Antonio Narro (UAAAN),Saltillo, Coahuila, México. The field assessmen twas conducted at the Experimental Field Las Huastecas of the Na tional Institute for Forest, Agricultural and Animal Research (INI FAP), at Villa Cuauhtémoc, Tamaulipas, in the autumn-winter cycle of 2008. The phenological varia blese valuated were days to flowering and days to first harvest.Yield varia bles evaluated were the number of fruits per plant, fruit average weight, and yie ld (t/ha). There was a positive relationship between days at the first harvest and days at flowering,and a negative relationship between fruits per plantand fruit average weight. The main component was days to first harvest. The cluster analysis indicated three groups,the first one constituted by crosses 4x6, 4x8, 4x16, 4x130,118x130, 8x118, 4x118, 6x118, 6x16, 6x130, 8x16, 8x130 y16x118, the second by the 16x130 cross, and the third by thecross 6x8. This grouping may be a consequence of both the origin of the parents and the yield obtained.
Keywords: Capsicum annuum L., cluster analysis, phenological traits, yield components.