Image-based Appraisal of Woody Starch Reserves in Grapevine

IF 1.4 Q3 AGRONOMY

Agricultural Research Pub Date : 2023-12-26 DOI:10.1007/s40003-023-00680-9

Daniel Grigorie Dinu, Vitale Nuzzo, Giulia Gestri, Giuseppe Montanaro, Laura Rustioni

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引用次数: 0

Abstract

Maintaining stable yield in a climate change scenario requires the implementation of adaptive strategies for vine and vineyard management. Knowing the level of starch stored in perennial vine organs may help to reduce the risk of environmental constraints. Therefore, the development of decision support tools is important to assist winegrowers. The aim of this work was to test the possibility of estimating the starch content in grapevine woody tissues using digital imaging analysis. A colorimetric index (CI) based on red (R), green (G), and blue (B) mean pixel values was proposed and compared with an existing spectrophotometric index (SI). Shoots of three grapevine cultivars were collected during the 2020 dormant season and forced to produce new rooted cuttings. From these cuttings, a total of 73 internodes were sampled and their woody sections stained with Lugol’s iodine solution and CI and SI determined. In the three varieties, the CI well correlated with the SI (Spearman’s test ranged from − 0.84 to − 0.93, p < 0.0001). The resulting CI-based model developed can accurately (R² = 0.84) predict the SI confirming it is a reliable method for the digital determination of woody reserves in grapevine, supporting management decisions in viticulture.

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基于图像的葡萄木质淀粉储量评估

要在气候变化的情况下保持稳定的产量，就必须对葡萄树和葡萄园的管理实施适应性策略。了解多年生葡萄树器官中储存的淀粉水平有助于降低环境限制的风险。因此，开发决策支持工具对帮助葡萄种植者非常重要。这项工作的目的是测试利用数字成像分析估算葡萄木质组织中淀粉含量的可能性。提出了一种基于红色（R）、绿色（G）和蓝色（B）平均像素值的色度指数（CI），并与现有的分光光度指数（SI）进行了比较。在 2020 年的休眠期采集了三个葡萄栽培品种的嫩枝，并强迫其进行新的扦插。从这些插条中总共取样 73 个节间，用卢戈尔碘溶液对其木质部进行染色，并测定 CI 和 SI。在这三个品种中，CI 与 SI 具有良好的相关性（Spearman 检验范围为 - 0.84 至 - 0.93，p < 0.0001）。由此建立的基于 CI 的模型可以准确（R2 = 0.84）地预测 SI，这证实了它是数字化测定葡萄树木质储量的可靠方法，可为葡萄栽培管理决策提供支持。

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来源期刊

Agricultural Research AGRONOMY-

CiteScore

3.80

自引率

0.00%

发文量

期刊介绍： The main objective of this initiative is to promote agricultural research and development. The journal will publish high quality original research papers and critical reviews on emerging fields and concepts for providing future directions. The publications will include both applied and basic research covering the following disciplines of agricultural sciences: Genetic resources, genetics and breeding, biotechnology, physiology, biochemistry, management of biotic and abiotic stresses, and nutrition of field crops, horticultural crops, livestock and fishes; agricultural meteorology, environmental sciences, forestry and agro forestry, agronomy, soils and soil management, microbiology, water management, agricultural engineering and technology, agricultural policy, agricultural economics, food nutrition, agricultural statistics, and extension research; impact of climate change and the emerging technologies on agriculture, and the role of agricultural research and innovation for development.