Abstract

RAMIREZ, H. et al. Prohexadione-Ca, GA₃, ANOXA and BA modify physiological and biochemical indicators in Mirador chilli. Rev. Chapingo Ser.Hortic [online]. 2010, vol.16, n.2, pp.83-89. ISSN 2007-4034.

Mirador chili is a vegetable crop of economic and social consideration in the Mirador, Chicontepec region of Veracruz, México. However, its yield is often reduced as a result of a high percentage of flower drop. This condition adversely alters yield and fruit quality. For this reason, the effect of bioregulators on the physiology and biochemistry of the chili was evaluated. When Mirador chilli field plants reached 50% flowering, the following treatments where applied with a hand sprayer: P-Ca 100 mg·L^-1; GA₃ 10 mg·L^-1; ANOXA 10 mg·L^-1; BA 10 mg·L^-1; P-Ca 100 + GA₃ 10 mg·L^-1; P-Ca 100 + ANOXA 10 mg·L^-1; P-Ca 100 + BA 10 mg·L^-1; GA₃ 5 + ANOXA 5 + BA 5 mg·L^-1 and H₂O (control). Plant height, flowers per plant, fruit set, seed number per fruit, yield, vitamin C and capsaicin in fruits were evaluated. P-Ca reduced final plant height. When P-Ca was combined with GA₃, ANOXA or BA increases in total number of flowers, fruit set, seed number per fruit, yield and content of vitamin C and capsaicin in fruits were observed.

Keywords : Capsicum annuum L.; hormones; vitamin C; capsaicin.

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