Abscisic acid as a potential chemical thinner for peach

Pesquisa Agropecuária Brasileira

Marcos Antônio Giovanaz¹  Daniel Spagnol¹  Josiane Bartz¹  Mateus Da Silveira Pasa¹  Fabio Clasen Chaves¹  José Carlos Fachinello¹ 

关键词: abscission;    pit hardening;    plant growth regulators;    plant hormones;    stone fruit;    abscisão;    endurecimento do caroço;    regulador de crescimento vegetal;    hormônios vegetais;    frutíferas de caroço;   

DOI  :  10.1590/S0100-204X2015001000015

来源: SciELO

【 摘 要 】

Abstract:The objective of this work was to evaluate the effect of abscisic acid, applied at different rates and different fruit developmental stages, on the thinning of 'Chiripá' peach. Abscisic acid (ABA) at 500 mg L-1 was applied at three stages of fruit development based on lignin deposition: stage 1, at 24 days after full bloom (DAFB); stage 2, at 40 DAFB; and stage 3, at 52 DAFB. Only ABA application at stage 2 - 40 DAFB - reduced fruit set and the number of fruit per plant. Three ABA concentrations (350, 500, and 750 mg L-1) were then applied at 40 DAFB. All rates increased fruit ethylene production and fruit abscission.

【 授权许可】

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