Contribuição dos componentes de rendimento na produtividade de genótipos crioulos de feijão (Phaseolus vulgarisLResumo -Este trabalho teve por objetivo verificar a contribuição relativa dos componentes do rendimento para a produção final em genótipos de feijão (Phaseolus vulgaris L). O experimento foi conduzido com 26 genótipos de feijão na safra 2008/2009 nos municípios de Anchieta, Joaçaba e Lages, estado de Santa Catarina, sob delineamento experimental em blocos ao acaso com 3 repetições, onde avaliou-se os componentes do rendimento e produtividade. Foi utilizado o teste de variância univariada para determinação da variabilidade e da resposta dos genótipos aos diferentes ambientes de cultivo e os testes de Scott-Knott e Tukey para comparação das médias. As correlações foram estimadas através da análise de Trilha. Foi observada resposta diferenciada dos genótipos nos ambientes testados para todos os caracteres avaliados, com exceção da massa de 100 grãos. A seleção indireta para massa de 100 grãos para elevado rendimento de grãos não é uma boa estratégia para o progresso genético, devido aos efeitos indiretos negativos. Mas, a seleção para número de vagens por planta, número de grãos por vagem e número de lóculos por legume podem contribuir efetivamente para incrementar o rendimento de grãos. Palavras-chave -Phaseolus vulgaris L. Rendimento de grãos. Componentes da produção. Características agronômicas. Análise de trilha.Abstract -The objective this work was to verify the relative contribution between yield components and yield of the common bean landraces cultivars. The experiment was carried out with twenty six genotypes of beans under field conditions in the 2008/2009 growing season using randomized block design with three repetitions, where evaluated the yields components and yield in the in the following Santa Catarina countries: Anchieta, Joaçaba and Lages. The unvaried variance test was used and the cropping places were compared by Tukey test and, Scott-Knott test to grouping genotypes. The correlations were done by path analysis. The genotypes evaluated performed differently according to the environment where the tests were done to all characters, with exception to the mass of 100 grains. The indirect selection by mass of 100 grains to yield component isn't a good alternative to genetic progress. But, the selection to pod number per plant, grain per pod and pod loci number can contribute to yield selection.

Resumo AbstractThe objective of this work was to characterize the genetic diversity of landrace beans in two years for morphologic and agronomy characteristics. Twenty four bean (Phaseolus vulgaris L.) genotypes were evaluated during the growing seasons of 2006/2007 and 2007/2008, using the randomized block design with three replications in Lages -SC. The genotypes were analyzed for 12 morphological and agronomic traits. The genotypes were studied using multivariable techniques to measure genetic divergence represented by the generalized distance of Mahalanobis and the genotypes grouping was performed by Tocher's optimization procedure. Among the 12 variables evaluated, the weight of 100 seeds had the highest contribution in the separation of the genotypes followed by the pod length in the two seasons. Genotypes BAF 3, BAF 37, BAF 42, BAF 55, BAF 57 and BAF 75 had high grain yield (around 4,000 Kg ha -1 ) in the two growing seasons and they could be incorporated in the programs of genetic breeding or used in the crop production.

-This work was carried out with the aim of characterising landrace genotypes of the common bean as to the physiological potential of seeds produced in two consecutive seasons in different regions of the state of Santa Catarina, Brazil. The seeds of 26 genotypes were used, produced during 2009/2010 and 2010/2011 in the towns of Anchieta, Joaçaba and Lages. After the procedure for obtaining both mean and work samples, the following tests were carried out: first and second germination count, electrical conductivity, accelerated ageing, field emergence, thousandseed weight and productivity. Based on analysis of the results, the genotypes were classified using the Scott-Knott test. The physiological quality of the bean seeds was influenced by both genotype and environment, and the potential of each genotype was dependent on favourable conditions in the crop environment. The landrace genotypes BAF13 and BAF55 were superior to the others, and stood out for seed productivity and quality. The town of Lages had the greatest productivity and best seed quality for the 2009/ 2010 season.

ABSTRACT. The objective of this study was to identify the phenotypic and genotypic correlations between the plant cycle and plant habit and the effect on yield in landrace bean genotypes. The experiment was conducted in Joaçaba and Lages, Santa Catarina State for the 2008/2009 crop using 26 bean genotypes: 22 landrace and 4 commercial genotypes obtained from the UDESC. We evaluated the number of days from emergence to flowering, number of days from flowering to physiological maturity and number of days from emergence to physiological maturity in relation to the genotypes' cycle. The aerial plant architecture characteristics evaluated were the growth habit, plant habit, plant height, stem diameter, height of the first pod insertion and number of nodes on the main stem. Trail analysis showed that there was a positive correlation between the emergence-to-flowering period and yield and that the emergencephysiological maturity; flowering-physiological maturity showed a negative correlation to the yield in both locations. Therefore, short-cycle genotypes, especially those with a reduced post-flowering period, produced increased yields. The aerial plant architecture characteristics showed phenotypic and genotypic positive correlations with the yield in both environments. To increase yield, the reproductive period needs to coincide with periods of the greatest photosynthetically active radiation.

ResumoA antecipação da colheita pode diminuir o tempo em que as sementes permanecem no campo sob o risco de fatores bióticos e abióticos que podem promover sua deterioração. Assim, o presente trabalho teve como objetivo avaliar a antecipação da colheita e a qualidade fisiológica de sementes de feijão crioulo após a aplicação do herbicida paraquat em diferentes épocas de pré-colheita. O experimento foi realizado sob delineamento experimental inteiramente casualizado em esquema fatorial 3x4, com três repetições. O dessecante paraquat (400 g ha -1 do i.a.) foi aplicado em plantas de feijoeiro, sendo dois genótipos crioulos 'BAF55' e 'BAF84' e um comercial 'BAF112' (IPR 88-Uirapurú) em três épocas (26, 30, 34 dias após a floração). O tratamento testemunha foi composto por plantas não dessecadas. Após a colheita, estimou-se a produtividade e em seguida foram realizados os testes de germinação, envelhecimento acelerado, comprimento de radícula, comprimento de hipocótilo e condutividade elétrica. A dessecação pré-colheita não afetou a produtividade, a germinação, o vigor e nem o desenvolvimento inicial de plântulas. A dessecação preservou a integridade das membranas celulares para os genótipos 'BAF112' e 'BAF55' quando o herbicida foi aplicado aos 26 DAF. No geral, as sementes dos genótipos crioulos de feijão apresentaram potencial fisiológico superior ao genótipo comercial na integridade de membranas. Os genótipos crioulos, 'BAF55' e 'BAF84' apresentaram maior produtividade de sementes que o comercial ('BAF112'). A dessecação pré-colheita possibilitou antecipar a colheita de 16 até 24 dias sem alterar a qualidade e a produtividade de sementes. Palavras-chave: Phaseolus vulgaris, condutividade elétrica, envelhecimento acelerado, germinação, vigor AbstractAn early harvest reduces the time that the seeds stay in the field under the effect of biotic and abiotic factors, which are responsible for their deterioration. So, the objective of this work was to determine the effect of pre-harvest desiccant application on the yield and physiological quality of common bean seeds. The experimental layout was completely random, the desiccant used was paraquat (400 g ha -1 a.i.), on a combination of three genotypes: 'BAF55', 'BAF84' and 'BAF112' (commercial black cv. IPR88-Uirapurú) with three plant desiccation periods (26, 30, 34 days after flowering (DAF)), and a control