
7株香榧优株坚果表型性状与品质特性的研究
陶涛, 刘耀辉, 薛中俊, 高越, 袁璐鸿, 郑芬, 吴炜, 黄界颍
南京林业大学学报(自然科学版) ›› 2024, Vol. 48 ›› Issue (2) : 37-44.
7株香榧优株坚果表型性状与品质特性的研究
Studies on the phenotypic traits and quality characteristics of seven superior tree nuts of Torreya grandis ‘Merrillii’
【目的】 对黟县7株香榧(Torreya grandis ‘Merrillii’)优株坚果的主要物理性质和主要成分含量进行比较,分析黟县香榧品质情况,为香榧良种选育与开发利用提供理论依据。【方法】 选取安徽黟县7个香榧种质,测定其表型特征、矿物元素、营养成分及脂肪酸组成等29个物理、化学性质指标,对所测数据进行关联、聚类分析。【结果】 香榧的表型性状及内在品质各指标差异显著(P<0.05)。粗蛋白质质量分数变化范围为6.67%~14.69%;粗脂肪质量分数为36.20%~55.51%,其中多不饱和脂肪酸平均质量分数最高的是亚油酸47.81%,其次是金松酸12.20%;全钾(TK)质量分数为0.77%~1.39%,不同优株间主要矿物元素差异极显著(P<0.05)。【结论】 黟县7株香榧优株中,外观偏长圆形的诸暨一号和浙江细榧粗蛋白质含量相比偏圆形的高产木榧、和尚榧、叶里笑、米榧和大圆榧高,而偏圆形的香榧种仁油脂酸价更低,油脂的品质更好;可将酸价、核形指数、油酸含量作为筛选香榧优株的优选指标。
【Objective】 This study investigated seven nuts of Torreya grandis‘Merrillii’ to compare and analyze the primary physical properties and content of the main components, understand the quality of T. grandis in Yi County, and provide a theoretical basis for the selection, development, and utilization of improved varieties of T. grandis ‘Merrillii’【Method】 Seven T. grandis were selected ‘Merrillii’ germplasms from Yi County, southern Anhui Province; measured their phenotypic characteristics, mineral elements, nutrient composition, fatty acid composition, and 29 additional physical and chemical properties; and carried out correlation and cluster analyses on the measured data. 【Result】 The phenotypic characteristics and internal quality indices of T. grandis ‘Merrillii’ differed significantly (P < 0.05). The crude protein content ranged from 6.67% to 14.69%. The crude fat content varied from 36.20% to 55.51%, among which the highest average content of polyunsaturated fatty acids was linoleic acid at 47.81%, followed by chrysotile acid at 12.20%. The total potassium (TK) content varied from 0.77% to 1.39%, and there was a significant difference between different superior plants (P < 0.05). 【Conclusion】 According to the comprehensive analysis, the crude protein content of the oblong-shaped Zhujiyihao and Zhejiangxifei was higher than that of T. grandis ‘Merrillii’ types with a round appearance, while the oil acid value of the oblong T. grandis ‘Merrillii’ kernel was lower, and the oil quality was better. Acid value, nuclear shape index, and oleic acid content can be used as the optimum indexes for screening superior plants of T. grandis ‘Merrillii’.
Torreya grandis ‘Merrillii’ / superior strain / phenotypic traits / quality / optimization index
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