Avaliação de genótipos de mamona na microrregião de Sousa Paraíba.

Abstract

The castor bean it is an oleaginous plant with high potential for the cosmetics industry. pharmaceutical and now a new alternative for the biodiesel industry. The objective of this study was to evaluate the behavior of six genotypes of castor beans having the point to identify the materiais with adaptation to micro region of Sousa-PB. It has been studied the lineages CNPAM 2001- 42, CNPAM 2001 -- 48, CNPAM 2001 - 49, CNPAM 2009 - 7, CNPAM 2009 - 8 and the BRS Energia cultivated variety. The study was conducted in the experimental área at IFPB Campus Sousa, in São Gonçalo. The experimental design used was the ramdomized block with four repetition and the experimental plots consisting of ten plants spaced of Im x Im Were evaluated the characters days to flowering of the primary raceme (DF)l number of stem nodes (NN); stem height (AC); stem diameter (DC); plant height (AP); total length of the primary raceme (TT)l useful length of the primary raceme ((TU)l number of branches per plant(NRPP)l number of raceme per plant(NR), yield(kg/ha)(RD); seed oil content (TO). There was a significant difference at 1% probability by F test for the characters analyzed. The average days to flowering (DF) was 51,9, the lineageCNPAM 2009 - 8 was the material later (92 days) compared to the rest lineage ranged from 41,5 to 46 days. The greatest total length of primary raceme corresponded to BRS Energia and CNPAM 2009 -- 8. The number of racemes (NR) ranged from 2,19 in lineage CNPAM 2009 -- 8 to 20,57 in CNPAM 2001 -- 49. The yield ranged from 242,38 to 2264,28 kg/ha with featured to the lineages CNPAM 2001 - 42 and CNPAM 2001 - 48 which one were of higher productivity. The oil content of seeds of the genotypes had a ranged from 48.15% to 53,6% and average about 52,02%. These results allowed identifying genotypes with good potential for cultivation on the conditions of microrregion Sousa - Paraíba.