
Comprehensive evaluation on important traits of wild pomegranate fruits from Tibet
FAN Yaoyuwei, Renzeng Langjia, DONG Jianmei, REN Yuan, GE Dapeng, ZHAO Xueqing, YUAN Zhaohe
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2023, Vol. 47 ›› Issue (4) : 73-80.
Comprehensive evaluation on important traits of wild pomegranate fruits from Tibet
【Objective】The fruit samples of 21 wild pomegranate plants collected in the dry-hot valley area of Tibet were comprehensively analyzed and evaluated to provide information for phenotypic database of wild pomegranate germplasms and provide scientific basis for breeding excellent pomegranate varieties.【Method】The fruit external and internal qualities of 21 pomegranate samples were determined by vernier caliper, electronic balance, texture analyzer and anthrone colorimetry, and the correlation analysis was carried out. Based on the comprehensive evaluation methods including ‘reasonable satisfaction’ and multidimensional value theory, 12 indexes, such as single fruit weight, fruit shape index, peel thickness, seed hardness, 100-aril weight, seed yield, soluble sugar content, soluble solids content, titratable acid content, vitamin C content, sugar-acid ratio and solid-acid ratio were selected to analyze and evaluate comprehensively.【Result】The fruit shape index of Gebu 5 was the largest. Junyong 1 had the smallest single fruit weight, the thinnest peel, the smallest 100-aril weight, and the lowest sugar-acid ratio. The peel thickness of Zela 1 was the largest; Changxi 1 had the largest 100-aril weight; the seed yield of Yeba 1 was the highest while Gula 3 the lowest. The content of soluble solids and soluble sugar in Gula 1 was the highest. Changxi 3 had the highest vitamin C content; sugar-acid ratio and solid-acid ratio of Zhula 1 were the largest. Correlations between some indexes were significant (P<0.05) or extremely significant (P < 0.01) positive or negative. The highest synthetic ‘reasonable satisfaction’ was Zhula 1. 【Conclusion】The fruit qualities of 21 wild pomegranate samples were significantly different. Most of wild pomegranates were characterized by small fruit, hard seed and high content of acids, indicating a rich genetic variability of wild pomegranate resources at the phenotypic level. According to the results of final synthetic ‘reasonable-satisfaction’, the overall fruit external and internal quality traits of Zhula 1 are optimal, which can be used as resources for introduction and selective breeding.
Punica granatum (pomegranate) / fruit quality / correlation analysis / multidimensional value theory
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