不同霜冻胁迫时间下霜桑叶品质的变化

doi:10.3969/j.issn.1004-1524.20250449

浙江农业学报 ›› 2026, Vol. 38 ›› Issue (5): 934-943.DOI: 10.3969/j.issn.1004-1524.20250449

不同霜冻胁迫时间下霜桑叶品质的变化

李佳奇(), 胡宽莲, 沈子靖, 史建国^*(), 何韵

榆林学院现代农学院, 陕西榆林 719000

收稿日期:2025-06-19 出版日期:2026-05-25 发布日期:2026-06-02
作者简介:李佳奇,研究方向为中草药及饲用作物遗传育种。E-mail:1097243283@qq.com
通讯作者: *史建国,E-mail:378279015@qq.com
基金资助:
陕西省重点研发计划一般项目(2024JC-YBQN0224);陕西省教育厅重点科研计划项目(23JS069);榆林市科协青年人才托举计划(20230507);榆林市科技计划项目(2024-CXY-131);榆林学院博士科研启动基金项目(2023GK11);2025年研究生创新基金项目(2025YLYCX44)

Changes in the quality of frost mulberry leaf under different frost stress periods

LI Jiaqi(), HU Kuanlian, SHEN Zijing, SHI Jianguo^*(), HE Yun

College of Modern Agriculture, Yulin University, Yulin 719000, Shaanxi, China

Received:2025-06-19 Published:2026-05-25 Online:2026-06-02

摘要/Abstract

摘要：

为研究霜冻胁迫对霜桑叶品质的影响,本研究以8个桑树品种为材料,系统分析了不同霜冻胁迫时间(6、12、18、24 d)下桑叶7个关键指标(含水量、脂肪含量、黄酮含量、总酚含量、纤维含量、单宁含量、蛋白质含量)的动态变化规律。结果表明,多数指标(脂肪含量、含水量)在短期胁迫(6 d,5 ℃)时达到峰值。通过Pearson相关分析发现,各品质指标间存在显著(p<0.05)相关性。基于主成分分析,得到脂肪含量、总酚含量、黄酮含量、纤维含量及蛋白质含量5个关键指标。综合评价显示,镜泊桑在霜冻胁迫6 d(5 ℃)时综合得分最高,荆桑在霜冻胁迫24 d(0 ℃)时次之,寒杂桑、吴堡桑与丰驰2号在短期胁迫下品质相当,分别位列第3、4、5名。本研究为桑树抗寒育种及霜桑叶精准采收提供理论支撑。

关键词: 霜冻胁迫, 桑树种质资源, 桑叶品质, 主成分分析

Abstract:

To investigate the impact of frost stress on the quality of frost mulberry leaves, this study systematically investigated the dynamic changes of seven key quality indicators (moisture content, fat content, flavonoids content, total phenols content, fiber content, tannin content and protein content) in mulberry leaves under different frost stress periods (6, 12, 18, and 24 d) using eight mulberry varieties. The results showed that most quality indicators (fat and moisture content) peaked under short-term stress (6 d, 5 ℃). Pearson correlation analysis revealed significant (p<0.05) correlations among these indicators. Based on principal component analysis, five key indicators, fat content, total phenols content, flavonoids content, fiber content, and protein content, were proposed. The comprehensive evaluation revealed that Jingbo mulberry achieved the highest score under 6-day (5 ℃) frost stress, followed by Jing mulberry under 24-day (0 ℃) frost stress. Hanza mulberry, Wubao mulberry, and Fengchi 2 exhibited comparable quality under short-term stress, ranking third, fourth and fifth, respectively. This study provides theoretical support for frost-resistant mulberry breeding and the precise harvesting of frost mulberry leaf.

Key words: frost stress, mulberry germplasm resources, quality of mulberry leaf, principal component analysis

中图分类号:

S888

李佳奇, 胡宽莲, 沈子靖, 史建国, 何韵. 不同霜冻胁迫时间下霜桑叶品质的变化[J]. 浙江农业学报, 2026, 38(5): 934-943.

LI Jiaqi, HU Kuanlian, SHEN Zijing, SHI Jianguo, HE Yun. Changes in the quality of frost mulberry leaf under different frost stress periods[J]. Acta Agriculturae Zhejiangensis, 2026, 38(5): 934-943.

图/表 11

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主成分 Principal componet	特征值 Eigenvalue	方差贡献率/% Variance contribution rate/%	累计方差贡献率/% Cumulative variance contribution rate/%
1	2.81	35.123	35.123
2	1.383	17.289	52.412
3	1.216	15.197	67.609
4	1.107	13.837	81.446
5	0.606	7.577	89.023

主成分 Principal componet	特征值 Eigenvalue	方差贡献率/% Variance contribution rate/%	累计方差贡献率/% Cumulative variance contribution rate/%
1	2.81	35.123	35.123
2	1.383	17.289	52.412
3	1.216	15.197	67.609
4	1.107	13.837	81.446
5	0.606	7.577	89.023

指标Index	PC1	PC2	PC3	PC4	PC5
单宁含量 Tannins content	-0.876	0.043	-0.089	0.050	0.039
脂肪含量 Fat content	0.824	0.359	0.195	-0.173	0.063
蛋白质含量 Protein content	-0.103	-0.065	-0.113	0.175	0.961
黄酮含量Flavonoid content	-0.032	-0.163	0.913	0.225	-0.125
含水量Moisture content	0.751	-0.191	-0.362	0.311	-0.045
纤维含量Fiber content	-0.058	0.065	0.213	0.917	0.192
总酚含量Total phenolic content	-0.076	0.957	-0.147	0.058	-0.066

指标Index	PC1	PC2	PC3	PC4	PC5
单宁含量 Tannins content	-0.876	0.043	-0.089	0.050	0.039
脂肪含量 Fat content	0.824	0.359	0.195	-0.173	0.063
蛋白质含量 Protein content	-0.103	-0.065	-0.113	0.175	0.961
黄酮含量Flavonoid content	-0.032	-0.163	0.913	0.225	-0.125
含水量Moisture content	0.751	-0.191	-0.362	0.311	-0.045
纤维含量Fiber content	-0.058	0.065	0.213	0.917	0.192
总酚含量Total phenolic content	-0.076	0.957	-0.147	0.058	-0.066

桑树品种 Mulberry variety	胁迫温度/℃ Stress temperature/℃	得分 Score					综合得分 Comprehensive score	排名 Ranking
桑树品种 Mulberry variety	胁迫温度/℃ Stress temperature/℃	PC1	PC2	PC3	PC4	PC5	综合得分 Comprehensive score	排名 Ranking
镜泊桑 Jingbo mulberry	5	1.63	0.16	0.15	1.60	-0.14	0.88	1
荆桑 Jing mulberry	0	0.09	3.60	1.20	0.25	-0.10	0.85	2
寒杂桑 Hanza mulberry	5	2.16	-0.35	0.92	-1.79	1.02	0.79	3
吴堡桑 Wubu mulberry	5	1.82	-0.21	-0.99	2.05	-1.10	0.64	4
丰驰2号 Fengchi 2	5	1.83	0.11	0.13	0.04	-0.76	0.63	5
镜泊桑Jingbo mulberry	0	-0.48	0.66	0.46	1.41	2.38	0.56	6
荆桑Jing mulberry	5	1.63	0.22	0.60	-0.64	-0.67	0.56	7
选792 XU792	5	1.53	-1.01	-0.23	-1.12	1.05	0.36	8
强桑 Qiang mulberry	5	1.16	-0.37	-0.33	0.11	-0.75	0.23	9
强桑Qiang mulberry	0	-0.33	1.20	-0.07	-0.01	0.74	0.17	10
吴堡桑 Wubu mulberry	3	0.40	-1.07	-0.85	1.16	1.06	0.17	11
吴堡桑 Wubu mulberry	0	-0.48	0.33	-0.28	0.75	1.50	0.16	12
荆桑Jing mulberry	3	-0.07	1.24	0.12	0.01	-0.87	0.07	13
镜泊桑Jingbo mulberry	3	-0.55	0.14	-0.08	1.27	0.52	0.07	14
选792 XU792	0	-0.30	0.42	-0.80	0.05	1.19	0.01	15
荆桑Jing mulberry	1	-0.28	-0.02	1.51	0.03	-1.02	-0.01	16
镜泊桑Jingbo mulberry	1	-0.81	-0.86	1.73	1.25	-0.46	-0.05	17
桂桑62 Gui 62	5	0.80	0.06	-0.30	-1.78	-0.48	-0.07	18
寒杂桑Hanza mulberry	0	-0.65	0.76	0.13	-1.15	1.15	-0.10	19
吴堡桑Wubu mulberry	1	-0.70	-1.58	1.55	0.59	0.55	-0.11	20
强桑 Qiang mulberry	3	-0.38	0.62	-0.93	0.16	-0.10	-0.18	21
丰驰2号Fengchi 2	0	-0.83	0.97	-0.09	0.40	-0.94	-0.25	22
桂桑62 Gui 62	0	-0.89	0.44	-0.33	-1.13	0.77	-0.37	23
强桑 Qiang mulberry	1	-0.87	-1.41	1.09	0.04	0.00	-0.38	24
寒杂桑 Hanza mulberry	3	-0.23	-0.91	-0.16	-1.25	0.45	-0.38	25
选792 XU792	3	-0.35	-0.46	-1.57	-0.17	0.47	-0.42	26
选792 XU792	1	-0.74	-1.39	-0.25	0.00	0.55	-0.47	27
丰驰2号Fengchi 2	1	-0.91	-0.63	0.40	0.26	-1.10	-0.51	28
丰驰2号Fengchi 2	3	-0.24	-0.41	-1.85	0.79	-1.42	-0.55	29
寒杂桑 Hanza mulberry	1	-0.79	-0.71	0.71	-1.06	-1.36	-0.66	30
桂桑62 Gui 62	3	-0.77	0.02	-1.31	-1.24	-0.33	-0.73	31
桂桑62 Gui 62	1	-1.41	0.42	-0.30	-0.91	-1.78	-0.91	32

不同霜冻胁迫时间下霜桑叶品质的变化

Changes in the quality of frost mulberry leaf under different frost stress periods

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指标 Indicator	单宁含量 Tannin content	脂肪含量 Fat content	蛋白质含量 Protein content	黄酮含量 Flavonoid content	含水量 Moisture content	纤维含量 Fiber content
脂肪含量 Fat content	-0.611^**
蛋白质含量Protein content	0.151	-0.127
黄酮含量 Flavonoid content	-0.027	0.004	-0.138
含水量Moisture content	-0.587^**	0.397^**	0.006	-0.163
纤维含量Fiber content	0.089	-0.083	0.299^**	0.302^**	0.043
总酚含量Total phenolic content	0.101	0.176	-0.063	-0.215^*	-0.126	0.032

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