摘要
[目的]为了确定河西走廊张掖产区蛇龙珠葡萄果实的最佳采收期.[方法]以甘肃河西走廊张掖产区蛇龙珠葡萄为材料,共设置6个不同采收时期,测定葡萄果实的可溶性糖、可溶性固形物、可滴定酸、总酚、单宁、糖组分和有机酸组分等指标,并结合主成分分析,确定河西走廊张掖产区蛇龙珠葡萄最佳采收期.[结果]随着采收时间的延迟,蛇龙珠葡萄果实可溶性固形物和可溶性糖均表现出逐渐增加的趋势,在花后第106天时达到最大值,分别为24.53%和24.03%;可滴定酸、酒石酸和苹果酸含量均表现为逐渐降低的趋势,三者含量在花后第106天时均达到最小值,分别为0.63 mg/g、2.55 mg/g、2.15 mg/g;总酚和单宁含量呈前升后降的趋势,在花后第103天时均达最大值,分别为23.13 mg/g和6.45 mg/g,随后逐渐降低.通过对16个指标进行主成分分析,综合得出在花后第100天,103天和106天采收的蛇龙珠葡萄的综合品质排名在前三.[结论]蛇龙珠葡萄的最佳采收期范围为花后第100～106天,其中花后第103天时采收的果实综合品质最佳.
Abstract
[Objective]The study aimed to determine the best harvest period of Cabernet Gernischet grapes in Zhangye region of Hexi Corridor in Gansu.[Method]The Cabernet Gernischet grapes in Zhangye production area of Hexi Corridor were used as materials,and six different harvesting periods were set up,fol-lowed by determining the soluble sugar,soluble solids,titratable acid,total phenols,tannins,sugar compo-nents and organic Acid components and other indicators,and then determined the optimal harvesting period of Cabernet Gernischet grapes in Zhangye production area by using the principal component analysis.[Result]With the delay of harvesting time,both the soluble solids and soluble sugar of Cabernet Gernischet grape fruit showed an up-forward trend,which reached the maximum at 106 DAF and were 24.53%and 24.03%,respectively;titratable acid,tartaric acid and malic acid content showed a down-forward trend.The contents of the three all reached the minimum values at 106 DAF,which were 0.63 mg/g,2.55 mg/g,and 2.15 mg/g,respectively.The total phenolic and tannin contents reached the maximum at 103 ADF,which were 23.13 mg/g and 6.45 mg/g,respectively,and then gradually decreased.Through principal com-ponent analysis of 16 indicators,it was concluded that the comprehensive quality of Cabernet Gernischet grapes harvested at 100 DAF,103 DAF and 106 DAF ranked in the top three.[Conclusion]The optimal harvest period of Cabernet Gernischet grape was from 100 DAF to 106 DAF,and the fruits harvested at 103 DAF was the best in the comprehensive quality.
基金项目
甘肃农业大学"伏羲杰出人才培育计划"项目(Gaufx-03J02)
甘肃特色优势农产品评价(TYNPZ2022-05)
NETL
NSTL
维普
万方数据