Efeitos de reguladores de crescimento na frutificação do morangueiro cultivar «Monte alegre»

Effects of growth regulators on the fruiting of strawberry cultivar "Monte alegre"

Efeitos de reguladores de crescimento na frutificação do morangueiro cultivar «Monte alegre»

Effects of growth regulators on the fruiting of strawberry cultivar "Monte alegre"

Paulo R. C. Castro^I; Keigo Minami^II; Natal A. Vello^III

^IDepartamento de Botânica. E.S.A. "Luiz de Queiroz" - USP

^IIDepartamento de Agricultura e Horticultura. E.S.A. "Luiz de Queiroz" - USP

^IIIDepartamento de Genética. E.S.A. "Luiz de Queiroz" - USP

RESUMO

Estudou-se em Piracicaba (SP), os efeitos da aplicação de reguladores de crescimento em morangueiro cultivar "Monte Alegre". Efetuou-se a pulverização de SADH 5000 ppm, CCC 2000 ppm e GA 550 ppm; sendo que realizaram-se ainda três aplicações de IAA 10 ppm e GA 10 ppm, além do tratamento controle. Verificou-se que apesar do GA 550 ppm, SADH e GCC reduzirem a produção, três aplicações de IAA 10 ppm ou GA 10 ppm promoveram uma tendência de aumento na produtividade do morangueiro. Notou-se que os reguladores de crescimento não alteraram o número de frutos; sendo que o tratamento com GA 550 ppm promoveu redução no peso médio dos frutos da cultivar "Monte Alegre". Aplicação de GA 550 ppm causou aumento no número de frutos na terceira e quarta semanas de colheita, reduzindo progressivamente nas semanas subseqüentes. Observou-se que aplicações de GA 10 ppm ou IAA 10 ppm promoveram aumento no comprimento dos pedúnculos, facilitando a colheita'.

SUMMARY

The effects of growth regulators on strawberry cultivar "Monte Alegre" were studied in Piracicaba, State of Sao Paulo.

Succinic acid -2,2 - dimethylhydrazide (SADH) 5000 ppm, (2- Chloroethyl) Trimethylammonium chloride (CCC) 2000 ppm, and gibberellic acid (GA) 550 ppm were sprayed, and also three applications of indoleacetic acid (IAA) 10 ppm or GA 10 ppm were made. It was verified that although GA 550 ppm, SADH and CCC decreased yield, three applications of IAA 10 ppm or GA 10 ppm have promoted a tendency to increase strawberry yield. It was noted that growth regulators do not alter number of fruit, and GA 550 ppm promotes reduction in fruit mean weight. GA ppm increased number of fruit on 3^rd and 4^th weeks of harvesting, decreasing progressively in subsequent weeks. It was observed that GA 10 ppm or IAA 10 ppm promotes an increase in peduncle length, casing harvesting.

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LITERATURA CITADA

Entregue para publicação em 15/3/1976.

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Datas de Publicação

• Publicação nesta coleção
  29 Maio 2012
• Data do Fascículo
  1976