壳聚糖对桃果实品质的影响
Effect of Chitosan on Peach Fruit Quality
范中菡 1彭雪梅 2李睿 2陈庆华 1陈松 1林立金 2胡容平3
作者信息
- 1. 四川省农业科学院植物保护研究所,农业部西南作物有害生物综合治理重点实验室,四川 成都 610066
- 2. 四川农业大学园艺学院,四川 成都 611130
- 3. 四川省农业科学院食用菌研究所,四川 成都 610066
- 折叠
摘要
为了筛选出能提高桃果实品质的最佳壳聚糖浓度,以早熟桃品种早蜜为试材,在桃果实进入第二次快速膨大期时分别用浓度为0(CK)、1、2、4和6 g/L的壳聚糖进行叶面喷施处理,考察了不同浓度壳聚糖对桃果实品质的影响.结果表明:喷施壳聚糖处理有降低桃果实单果重、纵横径,增加果实硬度的趋势;虽然不同浓度壳聚糖处理均降低了桃果实中葡萄糖含量,但壳聚糖浓度 1 和 2 g/L处理的可溶性固形物含量显著高于CK,壳聚糖浓度 1 g/L处理的维生素C含量较CK显著提高9.56%,壳聚糖浓度 1和2 g/L处理的可溶性糖含量分别较CK显著增加9.40%和10.11%,壳聚糖浓度2 g/L处理的蔗糖含量较CK显著提高 52.52%,果糖和山梨醇含量以壳聚糖浓度 1 g/L处理最高,分别较CK显著提高 19.96%和 16.67%,其次是壳聚糖浓度 2 g/L处理,也显著高于CK;不同浓度壳聚糖处理均降低了桃果实氮、磷、铁和镁的含量,但增加了钾、硼和钙的含量;桃果实中PAL、APX和POD活性均是壳聚糖浓度1和2 g/L处理显著高于CK.综合考虑各项指标,改善桃果实品质的最佳壳聚糖浓度为 1和2 g/L.
Abstract
The optimal concentration of chitosan for improving peach fruit quality was determined.Chitosan[0(CK),1,2,4,and 6 g/L]was sprayed on the leaves of the early maturing peach variety'Zaomi'at the second stage of fruit expansion.The effect of chitosan on peach fruit quality was studied.The results showed that chitosan decreased the single fruit mass and longitudinal and transverse diameters and increased the fruit hardness.Different concentrations of chitosan reduced the glucose content in peach fruits.Compared with CK,chitosan applied at 1 and 2 g/L significantly increased the content of soluble solids;chitosan applied at 1 g/L increased the vitamin C content by 9.56%;chitosan applied at 1 and 2 g/L increased the soluble sugar content by 9.40%and 10.11%,respectively;chitosan applied at 2 g/L increased the sucrose content by 52.52%;chitosan applied at 1 g/L increased the fructose and sorbitol content by 19.96%and 16.67%,respectively.Different concentrations of chitosan reduced the content of nitrogen,phosphorus,iron,and magnesium and increased the content of potassium,boron,and calcium in peach fruits.The activities of phenylalanine aminolyase(PAL),ascorbate peroxidase(APX),and peroxidase(POD)in peach fruits were significantly increased after the application of 1 and 2 g/L chitosan.Considering all the indicators above,we suggest that chitosan can be applied at 1 and 2 g/L to improve peach fruit quality.
关键词
桃/壳聚糖/浓度/果实品质Key words
peach/chitosan/concentration/fruit quality引用本文复制引用
基金项目
国家现代农业产业体系四川水果创新团队项目(sccxtd-2021-04)
四川省农业科学院中试熟化项目(2021ZSSFXC56)
出版年
2023
国家科技期刊平台
NSTL
维普
万方数据