Efeitos do CPPU e do ácido giberélico nas características morfológicas dos cachos e bagos da uva 'Vênus' = Effects of CPPU ando giberelic acid in morfologic caracteres of cluster and berry 'Vênus' grape

Conduziram-se por dois anos experimentos com reguladores de crescimento, em vinhedo do cultivar Vênus. Em 2001, o CPPU foi aplicado nas doses 0; 5,0; 7,5; 10,0; 12,5; 15,0 e e 17,5mg L-1, enquanto o GA3 a: 0, 25, 50, 75, 100, 125 e 150mg L-1. Em 2002, o CPPU foi aplicado a 0, 15, 30, 45, 60, 75 e 90mg.L-1, e o GA3 nas doses , 30, 60, 90, 120, 150 e 180mg.L-1. Os reguladores de crescimento foram aplicados por imersão dos cachos em solução aquosa. O delineamento experimental foi em blocos ao acaso com sete tratamentos e seis repetições. Para cada cacho foram avaliadas a massa fresca do cacho, engaço e bagos, comprimento e largura dos bagos e número de bagos. Os resultados mostraram que os tratamentos tanto com CPPU como o GA3 aumentaram de modo linear a massa fresca,comprimento e largura dos bagos. With the objective of studying the effects of CPPU and GA3 on the clusters and berries characteristics of ‘Venus’ grapes, two trials were carried out over two seasons. In 2001, CPPU was applied at 0, 5.0, 7.5, 10, 12.5, 15.0 and 17.5mg L-1, and the following doses of GA3 were used: 0, 25, 50, 75, 100, 125 and 150mg L-1. In 2002, CPPU was applied at 0, 15, 30, 45, 60, 75 and 90mg.L-1; and the following doses of GA3 were used: 0, 30, 60, 90, 120, 150 and 180mg L-1. The growth regulators were applied by dipping clusters into aqueous solutions. For all trials the experimental design was randomized complete block, with 7 treatments and 6 replications. For each cluster were evaluated: weight of cluster, rachis and berries, length and width of berries and number of berries. In the two years of studying, both CPPU and GA3 treatments linearly increased weight, length and width of berries.