Studies on the phenotypic traits and quality characteristics of seven superior tree nuts of Torreya grandis ‘Merrillii’

TAO Tao, LIU Yaohui, XUE Zhongjun, GAO Yue, YUAN Luhong, ZHENG Fen, WU Wei, HUANG Jieying

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2024, Vol. 48 ›› Issue (2) : 37-44.

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南京林业大学学报（自然科学版）
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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2024, Vol. 48 ›› Issue (2) : 37-44. DOI: 10.12302/j.issn.1000-2006.202211034

Studies on the phenotypic traits and quality characteristics of seven superior tree nuts of Torreya grandis ‘Merrillii’

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Abstract

【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’.

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Torreya grandis ‘Merrillii’ / superior strain / phenotypic traits / quality / optimization index

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TAO Tao , LIU Yaohui , XUE Zhongjun , et al . Studies on the phenotypic traits and quality characteristics of seven superior tree nuts of Torreya grandis ‘Merrillii’[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2024, 48(2): 37-44 https://doi.org/10.12302/j.issn.1000-2006.202211034

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