Exogenous Applications of Brassinosteroids Improve Color of Red Table Grape (Vitis vinifera L. Cv. "Redglobe") Berries

被引:32
作者
Vergara, Alexis E. [1 ]
Diaz, Katy [2 ]
Carvajal, Rodrigo [2 ]
Espinoza, Luis [2 ]
Alcalde, Jose A. [1 ]
Perez-Donoso, Alonso G. [1 ]
机构
[1] Pontificia Univ Catolica Chile, Fac Agron & Ingn Forestal, Dept Fruticultura & Enol, Santiago, Chile
[2] Univ Tecn Federico Santa Maria, Dept Quim, Valparaiso, Chile
来源
FRONTIERS IN PLANT SCIENCE | 2018年 / 9卷
关键词
anthocyanins; berry color; brassinosteroids; color index for red grapes (CIRG); quality; FLAME-SEEDLESS GRAPES; ANTHOCYANIN BIOSYNTHESIS; ABSCISIC-ACID; PLANT HORMONES; QUALITY; EXPRESSION; GENES; ACCUMULATION; VERAISON; STEROIDS;
D O I
10.3389/fpls.2018.00363
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Color and other quality parameters of "Redglobe" grape (Vitis vinifera L.) berries were evaluated after treatment with brassinosteroid (BR) analogs. Three BRs analogs (24-epibrassinolide, Triol, or Lactone) were applied at three concentrations (0.0, 0.4, or 0.8 mg .L-1), at the onset of veraison. A commercial formulation (B-2000 (R)) was also applied, at a recommended rate of 0.06 mg .L-1. The tested BR analogs were effective improving berry color (evaluated as color index for red grapes, CIRG), increasing the levels of soluble solids and anthocyanins, and changing the types of anthocyanins present without altering other quality and yield parameters. The effects of BR analogs on color enhancement could be explained by an increase in soluble solids content and/or anthocyanin content. Treatment with 24-epibrassinolide (at 0.4 mg .L-1) or the commercial formulation tended to favor the production of dihydroxylated anthocyanins, which are responsible for the red and pink colors of grape berries. Results indicate that the use of BRs constitutes a potential tool in the production of table grapes. This is the first report of this enhancement effect in a productive context.
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页数:11
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