Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, Teaching Experimental Farm, College of Agriculture, Guizhou University, Guiyang 550025, China.
Department of Food and Medicine, Guizhou Vocational College of Agriculture, Qingzhen 551400, China.
Biomolecules. 2021 Aug 24;11(9):1257. doi: 10.3390/biom11091257.
In this study, the co-application of chitosan and tetramycin against kiwifruit soft rot and its effects on the disease resistance, growth, quality and aroma of kiwifruit were investigated. The results show that chitosan could effectively enhance tetramycin against soft rot of kiwifruit with the field control efficacy of 85.33% for spraying chitosan 100 time + 0.3% tetramycin AS 5000-time dilution liquid, which was higher than 80.99% for 0.3% tetramycin AS 5000-time dilution liquid and significantly ( < 0.01) higher than 40.66% for chitosan 100-time dilution liquid. Chitosan could significantly ( < 0.05) improve the promoting effects of tetramycin on total phenolics, total flavonoids, SOD activity of kiwifruit compared to tetramycin during storage for 0-28 days and enhance the disease resistance of kiwifruit. Moreover, the co-application of chitosan and tetramycin was more effective than tetramycin or chitosan alone in enhancing fruit growth, improving fruit quality and increasing fruit aroma. This study highlights that chitosan can be used as an adjuvant to enhance tetramycin against soft rot of kiwifruit and promote tetramycin's improvement for the single fruit volume and weight, vitamin C, soluble sugar, soluble solid, dry matter, soluble protein, titratable acidity and aroma of kiwifruit.
在这项研究中，研究了壳聚糖与土霉素联合应用对猕猴桃软腐病的防治效果及其对猕猴桃抗病性、生长、品质和香气的影响。结果表明，壳聚糖可有效增强土霉素对猕猴桃软腐病的防治效果，其中壳聚糖 100 倍+0.3%土霉素 AS 5000 倍稀释液喷雾的田间防治效果为 85.33%，显著高于 0.3%土霉素 AS 5000 倍稀释液的 80.99%（ < 0.01），也显著高于壳聚糖 100 倍稀释液的 40.66%（ < 0.05）。与单独使用土霉素相比，壳聚糖在贮藏 0-28 天期间可显著（ < 0.05）提高土霉素对猕猴桃总酚、总黄酮、SOD 活性的促进作用，增强猕猴桃的抗病性。此外，壳聚糖与土霉素联合使用比单独使用土霉素或壳聚糖更能有效促进果实生长，提高果实品质，增加果实香气。本研究表明，壳聚糖可用作增强土霉素防治猕猴桃软腐病的增效剂，促进土霉素提高猕猴桃单果重和单果重、维生素 C、可溶性糖、可溶性固形物、干物质、可溶性蛋白、可滴定酸和香气的效果。
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