Factores nutricionales y alteración en el contenido de antocianinas relacionados con el ennegrecimiento de los pétalos en rosa (Rosa sp.)

Abstract

One of the most important physiological disorders of red rose cultivars is blackening of petals, it affects outer and inner ones and results in flowers of poor quality. The goal of this review is to make an approach to the blackening disorder, determining the main possible causes in order to make available to growers, academics, scientifics as well as stakeholders, the inputs that allows to unveil its origin and to optimize its handling. Symptoms of blackening are showed especially when the flowers have been harvested and stored under cold room conditions; due to high accumulation of pigments, such as anthocyanins, also could be due to stress conditions, such as high or low UV radiation, low temperatures or a nutrient imbalance in the affected tissues.The following subjects will be treated: i) calcium and boron and their interaction, ii) calcium and physiological disorders, iii) pigments involved in the petals red color, iv) role of the phenolic compounds, particularly the anthocyanins, which are responsible for most of the red, pink, purple and blue colors observed in plant parts; as well as the environmental factors that can influence the blackening on red rose.

Evaluación del uso de microorganismos de montaña activados en el cultivo de rosas, Zinacantán, Chiapas, México

“…La rosa (Rosaceae) es uno de los cultivos más apreciados como flor de corte, su demanda destaca por su fragancia, variedad de tonos y colores que satisface los gustos más exigentes de los consumidores (Junior et al, 2019). Posee raíz pivotante, tallo leñoso, hojas compuestas, flores con cáliz de cinco sépalos y corola de un número variado de pétalos y frutos carnosos y anaranjados que contienen numerosos aquenios (Bohórquez et al, 2013). Se componen de cuatro tipos de órganos dispuestos en espirales, desde los sépalos externos hasta los internos, pétalos, estambres y carpelos; las variedades modernas de rosas exhiben un carácter de doble flor de alto número de pétalos y números modificados de estambres y carpelos (Dubois et al, 2011).…”