Articles
Effects of preharvest treatment of abscisic acid and DNA methylation inhibitor on blueberry fruit ripening
Article number
1440_7
Pages
51 – 56
Language
English
Abstract
Blueberry (Vaccinium spp.) has been gaining popularity due to its potential positive effects on human health.
In most blueberry cultivars, multiple hand harvest is necessary because each fruit on a single cluster matures at different times, which leads to high harvest costs.
If uniform ripening of blueberry clusters can be artificially controlled, the cost of blueberry production will be greatly reduced.
In our previous study, postharvest treatment of DNA methylation inhibitor, 5-Azacytidine (5-Aza), and fruit ripening-promoting phytohormone, abscisic acid (ABA), were applied to blueberry fruits at the large green stage and this promoted fruit ripening.
However, the effects of these treatments on on-tree fruit ripening have not been tested.
Here, we tested the effects of the 5-Aza and ABA treatment on green stage fruit on ripening progression and ripening uniformity of highbush blueberry ‘O’Neal’. Injection treatments of ABA and ABA plus 5-Aza on ‘O’Neal’ promoted anthocyanin accumulation, loss of acidity, and fruit softening.
However, the uniformity ripening progression level was not improved.
Our study demonstrated the remarkable effect of ABA and DNA methylation inhibitors on ripening promotion in on-tree blueberry clusters.
In most blueberry cultivars, multiple hand harvest is necessary because each fruit on a single cluster matures at different times, which leads to high harvest costs.
If uniform ripening of blueberry clusters can be artificially controlled, the cost of blueberry production will be greatly reduced.
In our previous study, postharvest treatment of DNA methylation inhibitor, 5-Azacytidine (5-Aza), and fruit ripening-promoting phytohormone, abscisic acid (ABA), were applied to blueberry fruits at the large green stage and this promoted fruit ripening.
However, the effects of these treatments on on-tree fruit ripening have not been tested.
Here, we tested the effects of the 5-Aza and ABA treatment on green stage fruit on ripening progression and ripening uniformity of highbush blueberry ‘O’Neal’. Injection treatments of ABA and ABA plus 5-Aza on ‘O’Neal’ promoted anthocyanin accumulation, loss of acidity, and fruit softening.
However, the uniformity ripening progression level was not improved.
Our study demonstrated the remarkable effect of ABA and DNA methylation inhibitors on ripening promotion in on-tree blueberry clusters.
Publication
Authors
Y. Bao, H. Yamane, R. Tao
Keywords
5-Azacytidine, hormone treatment, anthocyanin, fruit softening, soluble solid content, acidity
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