A utilização de mudas de bananeira micropropagadas de qualidade é o primeiro passo na implantação de um bom pomar e, para isso, sua aclimatização deve ser realizada de forma adequada. Em vista disso, objetivou-se, neste trabalho, avaliar o desempenho dos biofertilizantes HUMITEC® e RUTER AA® no desenvolvimento de mudas de bananeira micropropagadas, sendo instalado um experimento em viveiro comercial de produção de mudas. Foram utilizadas mudas de bananeira cv. Grand Naine, obtidas por micropropagação, sendo, posteriormente, transplantadas em sacos de polietileno preto (1,5 L), contendo, como substrato, terra de subsolo (Latossolo Amarelo), casca de arroz carbonizada e composto orgânico Organifol® (1:1:1). O delineamento experimental foi em blocos ao acaso, fatorial 2 x 4 (produtos e doses), com quatro repetições e quatro plantas úteis por parcela. Os tratamentos foram compostos pelos seguintes biofertilizantes e doses: HUMITEC® (0,0; 4,0; 8,0; 16,0 mL planta-1) e RUTER AA® (0,0; 2,0; 4,0; 8,0 mL planta-1). As doses dos produtos foram divididas em duas aplicações (28 e 56 dias após o transplantio das mudas), aplicadas via fertirrigação. Noventa e oito dias após o transplantio avaliaram-se as seguintes variáveis: altura das plantas (cm), diâmetro do colo rente superfície do solo (mm), área foliar total e por folha, biomassas fresca e seca da parte aérea e das raízes (g). Os dados foram submetidos análise da variância e quando o teste F foi significativo, realizou-se análise de regressão. Pode-se concluir que aplicações de HUMITEC® e RUTER AA® favoreceram o desenvolvimento das mudas e que, no verão, as plantas apresentaram maior desenvolvimento durante a aclimatização.

The use of quality micropropagated banana seedlings is the first step for a successful orchard establishment and the acclimatization of seedlings must be done properly. This study aimed to evaluate the performance of the biofertilizers HUMITEC® and RUTER AA® on the development of micropropagated banana seedlings produced in commercial seedling nurseries. Seedlings of cv. Grand Naine were obtained via micropropagation and subsequently transplanted into black polyethylene bags (1.5 L) containing subsurface soil (oxisol), rice hulls and the organic compost Organifol® (1:1:1). The experiment was arranged in a 2 x 4 factorial randomized blocks design (products and rates) with four replications and four plants per plot. The treatments were consisted of the following rates of biofertilizers: HUMITEC® (0.0, 4.0, 8.0, 16.0 mL plant-1) and AA RUTER® (0.0, 2.0, 4.0; 8.0 mL plant-1). Product rates were divided in two applications (28 and 56 days after seedling transplanting) applied by fertirrigation. The variables of this experiment were measured after 98 days of transplantation: plant height (cm), stem diameter (mm), total leaf area and individual leaf area, fresh and dry mass of shoots and roots (g). Data were submitted to variance analysis and F test, and when the treatment means were significant, regression equations were adjusted. The results showed that application of HUMITEC® and RUTER AA® promoted the development of banana seedlings and that the seedlings showed higher development during acclimatization on summer.

Five yield traits were investigated in three-year-old progenies from open-pollinated rubber trees [Hevea brasiliensis (Willd. ex Adr. de Juss) Muell.-Arg.]. Twenty progenies were evaluated in a randomized, complete block design replicated three times using 10 plants per linear plot at the North Central Experimental Station in Pindorama, São Paulo State, Brazil. The characters evaluated included the average yield of rubber, growth vigor, bark thickness, total number of latex vessel rings and latex vessel size. Highly significant (p < 0.01) genetic differences were observed among progenies for most traits. The genotypic variance components accounted for 13.2%, 12.3%, 9.4%, 3.4% and 0.23% of the phenotypic variance for yield, growth vigor, bark thickness, total number of latex vessel rings and latex vessel size, respectively. Heritabilities, as well as genotypic and phenotypic correlations among traits, were estimated. Heritabilities for the above traits at the individual plant level (<img border=0 id="_x0000_i1026" src="../../../../img/revistas/gmb/v27n2/a14img01.gif" align=absmiddle>) were 37%, 35%, 69%, 10% and 16%, respectively. Significant positive genotypic and phenotypic correlations were found between the yield of rubber and growth vigor (r g = 0.73, r p = 0.70), bark thickness (r g = 0.70**, r p = 0.75**) and the total number of latex vessel rings (r g = 0.64, r p = 0.80). There was no relationship between yield and latex vessel size, growth vigor or total number of latex vessel rings. Based on these data, selecting the best two out of 20 progenies would result in a genetic gain of 12.3% and 6.8% for yield of rubber and growth vigor, respectively. The two best individual ortets within each progeny would result in a genetic gain of 27.7% and 9.1%, with a total gain of 40% and 16% for these two traits, respectively.

Foi registrada pela primeira vez a infestação das moscas-das-frutas Anastrepha serpentina (Wied.) e Anastrepha leptozona Hendel (Dip.: Tephritidae) em abiu Pouteria caimito (Sapotaceae) no Estado de São Paulo. Os frutos coletados foram oriundos da Coleção de Fruteiras Nativas e Exóticas, localizada na sede do Pólo Regional de Desenvolvimento Tecnológico do Vale do Ribeira (SP), município de Pariquera-Açu. Também emergiram espécimens de Neosilba glaberrima (Wied.) (Lonchaeidae).

It was registered for the first time the occurrence of fruit flies Anastrepha serpentina (Wied.) and Anastrepha leptozona Hendel (Dip.: Tephritidae) on abiu, Pouteria caimito (Sapotaceae) in the State of São Paulo, Brazil. Infested fruits were picked up from the Collection of Exotic and Native Tropical Fruits, installed in Pariquera-Açú County. Also, it was found emerged specimens of Neosilba glaberrima (Wied.) (Lonchaeidae) in the same field.

Realizou-se a caracterização do teor de cafeína no tegumento e amêndoa de sementes de plantas matrizes de guaraná (Paullinia cupana (Mart.) Ducke) existentes no Instituto Agronômico, no Vale do Ribeira,SP. Os teores de cafeína apresentaram valores médios de 2,33 ± 0,38% na amêndoa, de 1,09± 0,29 no tegumento e de 2,15± 0,34% na semente como um todo.

Seeds of "guarana" (Paullinia cupana (Mart.) Ducke) collected from plants growing at the Experimental Station of Pariquera-Açu, State of São Paulo, Brazil, were analysed for their caffeine contents. The results showed average values for the caffeine contents (dry matter basis) of 1.09 ± 0.29% in the tegument and 2.33 ± 0.38% in the cotyledon and embryo and 2.15 ± 0.34% in the whole seed.