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- Title
杨梅树体健康状态的量化指标评价.
- Authors
郑锡良; 梁森苗; 俞浙萍; 任海英; 孙鹂; 林瑞; 张淑文; 戚行江
- Abstract
Using healthy, debilitated and wilted bayberry trees as test materials, the activity of catalase (CAT), the content of hydrogen peroxide (H2O2), lipids in the roots, leaves, flower buds and other tissues of the trees in different states were determined. Physiological indicators such as peroxide (LPO) content, malondialdehyde (MDA) content, superoxide dismutase (SOD) activity, peroxidase (POD) activity, dehydroascorbic acid (DHA) content, etc. The relative expression levels of the ITS sequence (PvITS) of Pestaloti-opsis versicolor were statistically analyzed to remove outliers, and a quantitative index and reference threshold that could be used to evaluate the health status of the tree were established. The results showed that the root CAT, root There are extremely significant differences between DHA and branch SOD indexes and the other two types of trees. The reference thresholds for auxiliary evaluation of tree health status are: 117.52~280.67 nmol·min-1·g-1, 1.02~1.58μg·min- 1·g-1, 484.20~804.99 U·g-1; the reference thresholds of PvITS relative expression to evaluate health, frailty, and blight are 0.78~1.15, 1.76~3.91, 9.54~29.62, respectively. By screening different health states The quantitative index of the difference between the two, combined with the typical performance of the tree, can more accurately judge the health status of the tree, and provide a scientific basis for objective evaluation of the tree status and correct use of control measures.
- Subjects
SUPEROXIDE dismutase; HYDROGEN peroxide; MATERIALS testing; JUDGES; PEROXIDASE; CATALASE
- Publication
Acta Agriculturae Zhejiangensis, 2022, Vol 34, Issue 9, p1945
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2022.09.13