Fruit economic characteristics and yields of 40 superior Camellia oleifera Abel plants in the low-hot valley area of Guizhou Province, China

作者：Lu Yang, Chao Gao, Jiajun Xie, Jie Qiu, Quanen Deng, Yunchao Zhou, Desheng Liao, Chaoyi Deng · 发表于：Scientific Reports · 年份：2022 · DOI：10.1038/s41598-022-10620-2 · 被引用次数：28 · 研究领域：Horticultural and Viticultural Research、Nuts composition and effects、Plant biochemistry and biosynthesis

In this study, we assessed 26 economic characteristics and yields of the mature fruit of 40 superior Camellia oleifera Abel plants grown at the C. oleifera germplasm resource nursery in the low-hot valley area of Southwest Zuizhou, China, using principal component analysis (PCA). Correlations among the characteristics and the variability of the plants in these characteristics were also analyzed. Out of the 26 characteristics, 16 primary economic characteristics were selected for comprehensive assessment, based on the results of which the plants were ordered to obtain excellent C. oleifera germplasms. The data were subjected to PCA, and the 16 characteristics were integrated into 6 independent comprehensive indices, which included PV1 (single-fruit weight), PV2 (pericarp thickness), PV3 (seed rate), PV4 (total unsaturated fatty acids), PV5 (iodine value) and PV6 (dry seed rate). Then, the sum of the products of the contribution rates of the components and components scores was taken as the comprehensive score of each superior plant. In C. oleifera grown in the low-hot valley area, the oil yield exhibited very significant positive correlations with the dry seed rate and kernel rate but a very significant negative correlation with the 100-seed weight. The dry seed rate exhibited very significant negative correlations with the fruit diameter and fresh seed rate. Among the 26 characteristics, the variations of the acid value, peroxide value, number of fertile seeds, 100-seed weigh...