Análise descritiva, agrupamento e análise de trilha de cultivares de mamoneira em dois anos de cultivo em Cruz das Almas - BA

Abstract

The purpose of this work was to study the behavior agronomic among four castor tree cultivars, BRS188 Paraguaçu, BRS149 Nordestina, EBDA MPA 17 and Sipeal 28 with the edafoclimatic conditions of the Bahia reconcavo in two years of cultivation. The experiments were carried out in two agricultural years, the first year from April, 2006 to February, 2007 and the second year from May, 2007 to February 2008 in experimental area. The characteristics studied were: primary raceme blossom (FLO), caulis height (AC), average length of the caulis internodes (CMIC), number of internodes per caulis (NIC), caulis diameter (DC), plant height (EP), effective (useful) length of the raceme (CER), performance (REND), number of racemes harvested per plant (NRC), number of racemes emitted per plant (NREP), number of racemes miscarried per plant (NRAP), racemes length (CR), racemes without filling length (CRSE), racemes weight (PS), weight of fruit per raceme (PRF), weight of seeds per raceme (PSR), number of fruits per weight of fruit per raceme (NFR), number of seeds per raceme (NSR), final stand (EST), weight of fruits per part (PFP), the weight of fruits per plant (PFPL), weight of seeds per part (PSP) and weight of seeds per plant (PSPL). The cultivars don’t distinguish to the character have incoming from the grains, the presenting proportionately higher income in the first year when compared with the second year of cultivation, don’t occurring interaction genotype x enviroment, showing stability in two years studied. The cultivars showed variability for NRAP, NREP, CR, NSR, AC, CMIC, CER, PR, PSR and EP characters of high direct effect on yield and characters NREP and NRAP the most suitable to distinguish genotypes through’s of genetic dissent.