Study on the correlation between average fruit weight and quality of red-fleshed kiwifruit ‘Donghong' （Actinidia chinensis var. chinensis）
PENG Jue, ZHAO Ting-ting, CHEN Mei-yan, CHEN Li-xia, HAN Fei, LIU Xiao-li, ZHANG Lei, LI Da-wei
2022, 61(24):
117-122.
doi:10.14088/j.cnki.issn0439-8114.2022.24.025
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Taking commercial kiwifruit ‘Donghong' from 31 orchards in Pujiang County, Sichuan Province as the research object the main weight and quality characters of commercial kiwifruit were systematically analyzed, the correlation between kiwifruit size and quality characteristics was clarified. The sampling strategy was large-scale random sampling. In total, over 1 500 kg fruit were sampled. The hue angle, firmness, soluble solid content, total sugar content, total acid content, total sugar/total acid ratio, ripening rate and rotten rate were analyzed. Principal component analysis was performed by SPSS 21.0 software to analyze the correlation between fruit size/weight and quality, evaluate the key fruit traits and the planting quality of orchards. The results showed that fruits of 31 orchards were measured that the average fruit weight was 102.56 g. The hue angle, firmness, soluble solid content, total sugar content, total acid content, total sugar/ total acid ratio, ripening and rotten rate were 98.27 0H, 0.55 Kg·F, 17.97%, 11.91 g/100 g, 0.85 g/100 g, 16.03%, 5.56% and 2.61%, respectively. The correlation analysis of fruit weight and quality confirmed that fruit size/weight was positively correlated with soluble solid content, and negatively correlated with hue angle, which proved that “Donghong” with larger size had better soluble solid content, yellow flesh color, and more outstanding overall commercial performance. Finally, it was found that the quality index with large load in kiwifruit was hue angle, total sugar/ total acid ratio, firmness and soluble solid content based on principal component analysis.
