Desempenho agronômico de linhas endogâmicas ecombinadas de Capsicum annuum L. em sistema orgânico sob cultivo protegido

Abstract

Plant management under greenhouse conditions, associated with search for ecological products by consumers, has been a challenge for both farmers and vegetable researchers. Obtaining profit and quality depends on adapted genotypes that can be grown using an adequate management. The aim of this work was to study the agronomic performance of 12 recombinant inbred chili pepper (Capsicum annuum L.) lines, from crosses between UENF 1421 and UENF 1381 accessions, under greenhouse conditions and using an organic system. The experiment was carried out at Seropédica Experimental Station of PESAGRO-RIO, in randomized block design, with four replications. The following variables were evaluated: total number of fruits (TNF); total fruit weight (TFW); average weight of fruits (MWF); fruit length (FL); fruit diameter (FD); length and diameter fruit ratio (LDFR), and capsaicin presence (CAPS). Genotypic, phenotypic and environmental variances, as well as genotypic determination coefficient and variation index were estimated. There was highly significant difference for all traits unless TFW. The lines produced a high number of fruits, with low weight and with variability in shape among lines. Absence of capsaicin was observed only in two lines and other three lines segregated for capsaicin presence. High values of genotypic variance and genotypic determination coefficient were estimated for all traits, indicating that the results were due to genetic causes. The data pointed to a preliminary indication of lines 5 and 8 for cultivation in an organic system under greenhouse conditions.