Comparison of Post-harvest Quality Changes and Storage Tolerance of Baimi Series Pumpkin Varieties(Lines)
The Baimi series of pumpkin varieties(lines)were used as experimental materials,and stored at 16-18℃for 6 storage periods(10,20,30,40,50,60 d).The nutritional quality and physiological indexes such as soluble solids content,starch content,soluble sugar content,β-carotene content,vitamin C content,malondialdehyde content,respiration rate,weight loss rate and peel hardness were measured.The storage tolerance and quality changes of Baimi series of pumpkin varieties(lines)were analyzed,and the storage tolerance was comprehensively evaluated by principal component analysis,correlation analysis and cluster analysis,in order to screen out pumpkin varieties(lines)with strong storability.The results showed that the starch content of Baimi 5 was the highest in different storage periods,with an average of 1.39 mg/g.The highest respiration rate,soluble solids content and β-carotene content of Baimi 3 were 34.60 mg/(kg·h),10.80%and 25.20µg/g,respectively.The peel hardness of Baimi 10 was the highest,with an average of 25.17 N.The weight loss rate of Baimi 2 was the highest,with an average of 8.95%.The results of principal component analysis showed that the storage indexes of the tested pumpkin varieties(lines)could be expressed by five principal components,and the cumulative contribution rate of variance was 91.922%.Furthermore,the storage tolerance of Baimi series pumpkin varieties(lines)was comprehensively evaluated by membership function method and cluster analysis.The results showed that Baimi 10 could be used as a storage-tolerant variety for planting and promotion,while Baimi 2 had poor storability and was suitable for short-distance transportation or local sales.
国家科技期刊平台
NSTL
万方数据
