Comprehensive analysis and evaluation of the intrinsic fruit quality of Sichuan pear germplasm resources in China

• 81 pear germplasm resources, qualities, sugar, acid, phenol by HPLC. • The local resource fruits were malic acid and fructose type resources. • Different sugar-acid ratios,rutin-rich, screened, pear quality breeding. Sugar, acid, and phenol are critical indicators for assessing the fruit quality to pear. In this study, 81 pear germplasm resources belonging to the malic acid type were analysed and evaluated. Notably, the ‘Guanguanli’ cultivar from the Dadu River exhibited high sugar content and low acidity levels while ‘Mozili’ and ‘Gedali’ cultivars contained rutin. Additionally, ‘Huangpixishali’ cultivar from Yalong and Anning Rivers also showed presence of rutin. Among these varieties, the lowest titratable acidity was observed in ‘Zhenbaili’ cultivar from the Min and Tuo Rivers with a value of 0.084 %. Furthermore, 'Machengtuoli' cultivar had a soluble solid content as high as 17.44 % in this region. The second-highest soluble solid content at 16.86 % was found in ‘Qingli’ cultivar from Yangtze River basin. The stone cell content was lowest (0.135 %) in ‘Huahongli’ variety originating from Yalong and Anning rivers.