Influence of Cold Stress and Cold Resistance Evaluation on the Seedling Stage of Peach Cultivars

doi:10.16420/j.issn.0513-353x.2025-0142

Acta Horticulturae Sinica ›› 2026, Vol. 53 ›› Issue (5): 1409-1424.doi: 10.16420/j.issn.0513-353x.2025-0142

• Cultivation · Physiology & Biochemistry • Previous Articles Next Articles

Influence of Cold Stress and Cold Resistance Evaluation on the Seedling Stage of Peach Cultivars

LI Jie, TIAN Qihang, LIU Guojian, TIAN Zhendong, WANG Yu, WANG Zhaoyuan, CHANG Ruifeng, LI Yonghong^*()

Changli Institute of Pomology， Hebei Academy of Agriculture and Forestry Sciences，Changli， Hebei 066600， China

Received:2025-07-10 Revised:2025-12-21 Online:2026-05-25 Published:2026-05-26
Contact: LI Yonghong

Abstract

Abstract:

The low-temperature environment was simulated in artificial climate chamber at 0 ℃，-15 ℃，-20 ℃，-25 ℃ and-30 ℃. The stems of 21 one-year old peach cultivars were selected. The differences in relative conductivity，tissue browning rate，activity of phenylalanine ammonia-lyase（PAL）and contents of malondialdehyde（MDA），free proline（Pro）and soluble sugar（SS）were analyzed. The cold resistance and physiological indexes of different peach cultivars were evaluated by the membership function method and principal component analysis. The results indicated that the relative conductivity，tissue browning rate，activity of PAL，contents of MDA and Pro in stems of 21 peach cultivars increased with the decrease of temperature，while SS content increased firstly and then decreased. Compared with the control，relative conductivity and activity of PAL in trunks of Jinhuangjin，21 Century and Zhonghua Shoutao increased greatly，contents of Pro in trunks of Hangongzhu，Donghe 1 and Hunchun increased greatly. The cold resistance of 21 cultivars were in the decreasing order of Donghe 1，Hunchun，Hangongzhu，Beijing Wanmi，Jinbao，Qiuyue，Qiuyan，Xiahui 6，Qiuyi，Cuibao，Zhongyou 8，Chunxue，Zhongyou 21，Xiufeng，Okubo，Yantehong，Jinhuangjin，Zhongyoupan 7，Jinao，21 Century，Zhonghua Shoutao. According to the comprehensive evaluation by membership function method，the classification of cold resistance type（grade）was consistent with the semi-lethal temperature（LT₅₀）and the field survey results. The main indexes that affect the cold resistance of peach trees at the seedling stage are xylem thickness，xylem ratio，tissue browning rate，relative conductivity，activity of PAL and contents of MDA，free Pro and SS，and the differences（content）of these indexes can be used as important indexes to evaluate the cold resistance.

Key words: peach, seedling stage, cold resistance, comprehensive evaluation, parameters screening

LI Jie, TIAN Qihang, LIU Guojian, TIAN Zhendong, WANG Yu, WANG Zhaoyuan, CHANG Ruifeng, LI Yonghong. Influence of Cold Stress and Cold Resistance Evaluation on the Seedling Stage of Peach Cultivars[J]. Acta Horticulturae Sinica, 2026, 53(5): 1409-1424.

Figures/Tables 16

References 31

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序号No.	品种Cultivar	选育单位Breeding organization
1	中油 21 号 Zhongyou 21	中国农业科学院郑州果树研究所 Zhengzhou Fruit Research Institute，Chinese Academy of Agricultural Sciences
2	秋怡 Qiuyi	河北省农林科学院昌黎果树研究所 Changli Institute of Pomology，Hebei Academy of Agriculture and Forestry Sciences
3	霞晖 6 号 Xiahui 6	江苏省农业科学院园艺研究所 Institute of Horticulture，Jiangsu Academy of Agricultural Sciences
4	中油蟠 7 号 Zhongyoupan 7	中国农业科学院郑州果树研究所 Zhengzhou Fruit Research Institute，Chinese Academy of Agricultural Sciences
5	秋燕 Qiuyan	河北省农林科学院昌黎果树研究所 Changli Institute of Pomology，Hebei Academy of Agriculture and Forestry Sciences
6	北京晚蜜 Beijing Wanmi	北京市农林科学院林业果树研究所 Institute of Forestry and Pomology，Beijing Academy of Agricultural and Forestry Sciences
7	大久保 Okubo	日本冈山县赤盘郡熊山町 Kumama Town，Akapa-gun，Okayama Prefecture，Japan
8	21世纪 21 Century	河北科技师范学院 Hebei Normal University of Science and Technology
9	寒公主 Hangongzhu	吉林省农业科学院果树研究所 Fruit Research Institute，Jilin Academy of Agriculture Sciences
10	中华寿桃 Zhonghua Shoutao	农家选育 Rural Breeding
11	金奥 Jin’ao	美国加利福尼亚州 Zaiger 苗木公司 Zaiger Nursery Company，California，USA
12	金宝 Jinbao	北京市东北义园 Northeast Charity Park，Beijing
13	燕特红 Yantehong	中国农业科学院果树研究所 Institute Of pomology of Chinese Academy of Agricultural Sciences
14	金黄金 Jinhuangjin	山东省沂源县果品产销服务中心 Yiyuan County Fruit Production and Marketing Service Center，Shandong Province
15	秋悦 Qiuyue	河北省农林科学院昌黎果树研究所 Changli Institute of Pomology，Hebei Academy of Agriculture and Forestry Sciences
16	脆保 Cuibao	河北省农林科学院昌黎果树研究所 Changli Institute of Pomology，Hebei Academy of Agriculture and Forestry Sciences
17	东合1号 Donghe 1	野生半栽培资源 Wild Semi-cultivated Resources
18	珲春 Hunchun	吉林省农业科学院果树研究所 Jilin Academy of Agriculture Sciences
19	秀峰 Xiufeng	日本长野县曾跟悦夫氏 Nagano Prefecture in Japan once followed the Yuefu clan
20	中油8号 Zhognyou 8	中国农业科学院郑州果树研究所Zhengzhou Fruit Research Institute，Chinese Academy of Agricultural Sciences
21	春雪 Chunxue	美国加利福尼亚州Dave Wilson 苗圃 Dave Wilson Nursery in California of USA

序号No.	品种Cultivar	选育单位Breeding organization
1	中油 21 号 Zhongyou 21	中国农业科学院郑州果树研究所 Zhengzhou Fruit Research Institute，Chinese Academy of Agricultural Sciences
2	秋怡 Qiuyi	河北省农林科学院昌黎果树研究所 Changli Institute of Pomology，Hebei Academy of Agriculture and Forestry Sciences
3	霞晖 6 号 Xiahui 6	江苏省农业科学院园艺研究所 Institute of Horticulture，Jiangsu Academy of Agricultural Sciences
4	中油蟠 7 号 Zhongyoupan 7	中国农业科学院郑州果树研究所 Zhengzhou Fruit Research Institute，Chinese Academy of Agricultural Sciences
5	秋燕 Qiuyan	河北省农林科学院昌黎果树研究所 Changli Institute of Pomology，Hebei Academy of Agriculture and Forestry Sciences
6	北京晚蜜 Beijing Wanmi	北京市农林科学院林业果树研究所 Institute of Forestry and Pomology，Beijing Academy of Agricultural and Forestry Sciences
7	大久保 Okubo	日本冈山县赤盘郡熊山町 Kumama Town，Akapa-gun，Okayama Prefecture，Japan
8	21世纪 21 Century	河北科技师范学院 Hebei Normal University of Science and Technology
9	寒公主 Hangongzhu	吉林省农业科学院果树研究所 Fruit Research Institute，Jilin Academy of Agriculture Sciences
10	中华寿桃 Zhonghua Shoutao	农家选育 Rural Breeding
11	金奥 Jin’ao	美国加利福尼亚州 Zaiger 苗木公司 Zaiger Nursery Company，California，USA
12	金宝 Jinbao	北京市东北义园 Northeast Charity Park，Beijing
13	燕特红 Yantehong	中国农业科学院果树研究所 Institute Of pomology of Chinese Academy of Agricultural Sciences
14	金黄金 Jinhuangjin	山东省沂源县果品产销服务中心 Yiyuan County Fruit Production and Marketing Service Center，Shandong Province
15	秋悦 Qiuyue	河北省农林科学院昌黎果树研究所 Changli Institute of Pomology，Hebei Academy of Agriculture and Forestry Sciences
16	脆保 Cuibao	河北省农林科学院昌黎果树研究所 Changli Institute of Pomology，Hebei Academy of Agriculture and Forestry Sciences
17	东合1号 Donghe 1	野生半栽培资源 Wild Semi-cultivated Resources
18	珲春 Hunchun	吉林省农业科学院果树研究所 Jilin Academy of Agriculture Sciences
19	秀峰 Xiufeng	日本长野县曾跟悦夫氏 Nagano Prefecture in Japan once followed the Yuefu clan
20	中油8号 Zhognyou 8	中国农业科学院郑州果树研究所Zhengzhou Fruit Research Institute，Chinese Academy of Agricultural Sciences
21	春雪 Chunxue	美国加利福尼亚州Dave Wilson 苗圃 Dave Wilson Nursery in California of USA

品种 Cultivar	不同温度下的相对电导率/% Relative electrical conductivity under different temperatures					LT₅₀/℃
品种 Cultivar	0 ℃ （对照Control）	-15 ℃	-20 ℃	-25 ℃	-30 ℃	LT₅₀/℃
中油21号 Zhongyou 21	39.11	50.11	60.55	67.79	77.12	-14.91 defg
秋怡 Qiuyi	38.01	46.69	55.23	65.89	72.93	-16.93 abcd
霞晖6号 Xiahui 6	39.51	47.98	58.31	67.12	75.73	-15.96 bcde
中油蟠7号 Zhongyoupan 7	41.17	49.95	62.65	69.64	77.67	-14.54 efg
秋燕 Qiuyan	36.95	46.68	54.22	63.84	71.18	-17.19 abc
北京晚蜜 Beijing Wanmi	38.24	44.90	51.84	62.94	69.89	-18.17 a
大久保 Okubo	39.64	48.69	60.11	68.96	75.66	-15.24 cdefg
21世纪 21 Century	41.50	51.18	63.35	71.89	78.94	-14.08 efg
寒公主 Hangongzhu	39.63	44.81	50.26	61.85	68.03	-18.70 a
中华寿桃 Zhonghua Shoutao	40.87	52.07	64.16	71.82	78.31	-13.41 fg
金奥 Jin’ao	42.20	53.14	63.92	72.19	79.64	-13.29 fg
金宝 Jinbao	38.56	43.14	52.81	66.79	73.12	-17.03 abc
燕特红 Yantehong	40.66	49.81	60.98	68.65	76.64	-14.72 efg
金黄金 Jinhuangjin	42.84	50.94	65.91	72.94	79.25	-13.54 fg
秋悦 Qiuyue	36.37	45.37	53.19	65.33	72.55	-17.55 ab
脆保 Cuibao	40.73	48.30	60.55	66.30	74.68	-15.32 cdefg
东合1号 Donghe 1	37.91	44.19	52.18	63.41	70.59	-18.24 a
珲春 Hunchun	38.59	44.49	52.38	61.70	69.29	-18.24 a
秀峰 Xiufeng	39.25	48.47	59.79	70.34	76.80	-15.41 cdef
中油8号 Zhognyou 8	40.51	50.55	61.03	69.55	75.33	-14.30 efg
春雪 Chunxue	39.81	48.70	60.94	70.61	75.60	-14.89 defg

品种 Cultivar	不同温度下的相对电导率/% Relative electrical conductivity under different temperatures					LT₅₀/℃
品种 Cultivar	0 ℃ （对照Control）	-15 ℃	-20 ℃	-25 ℃	-30 ℃	LT₅₀/℃
中油21号 Zhongyou 21	39.11	50.11	60.55	67.79	77.12	-14.91 defg
秋怡 Qiuyi	38.01	46.69	55.23	65.89	72.93	-16.93 abcd
霞晖6号 Xiahui 6	39.51	47.98	58.31	67.12	75.73	-15.96 bcde
中油蟠7号 Zhongyoupan 7	41.17	49.95	62.65	69.64	77.67	-14.54 efg
秋燕 Qiuyan	36.95	46.68	54.22	63.84	71.18	-17.19 abc
北京晚蜜 Beijing Wanmi	38.24	44.90	51.84	62.94	69.89	-18.17 a
大久保 Okubo	39.64	48.69	60.11	68.96	75.66	-15.24 cdefg
21世纪 21 Century	41.50	51.18	63.35	71.89	78.94	-14.08 efg
寒公主 Hangongzhu	39.63	44.81	50.26	61.85	68.03	-18.70 a
中华寿桃 Zhonghua Shoutao	40.87	52.07	64.16	71.82	78.31	-13.41 fg
金奥 Jin’ao	42.20	53.14	63.92	72.19	79.64	-13.29 fg
金宝 Jinbao	38.56	43.14	52.81	66.79	73.12	-17.03 abc
燕特红 Yantehong	40.66	49.81	60.98	68.65	76.64	-14.72 efg
金黄金 Jinhuangjin	42.84	50.94	65.91	72.94	79.25	-13.54 fg
秋悦 Qiuyue	36.37	45.37	53.19	65.33	72.55	-17.55 ab
脆保 Cuibao	40.73	48.30	60.55	66.30	74.68	-15.32 cdefg
东合1号 Donghe 1	37.91	44.19	52.18	63.41	70.59	-18.24 a
珲春 Hunchun	38.59	44.49	52.38	61.70	69.29	-18.24 a
秀峰 Xiufeng	39.25	48.47	59.79	70.34	76.80	-15.41 cdef
中油8号 Zhognyou 8	40.51	50.55	61.03	69.55	75.33	-14.30 efg
春雪 Chunxue	39.81	48.70	60.94	70.61	75.60	-14.89 defg

品种 Cultivar	不同温度下的褐变率/% Browning rate under different temperatures
品种 Cultivar	0 ℃（对照Control）	-15 ℃	-20 ℃	-25 ℃	-30 ℃
中油21号 Zhongyou 21	0	28.08 ± 0.45	56.19 ± 1.01	75.31 ± 1.97	94.27 ± 0.99
秋怡 Qiuyi	0	24.08 ± 1.31	54.53 ± 1.81	71.83 ± 1.80	86.17 ± 2.01
霞晖6号 Xiahui 6	0	27.17 ± 0.88	57.46 ± 0.74	73.79 ± 1.45	94.46 ± 1.03
中油蟠7号 Zhongyoupan 7	0	31.36 ± 0.85	62.27 ± 1.96	77.00 ± 0.92	93.05 ± 1.71
秋燕 Qiuyan	0	24.38 ± 0.76	52.14 ± 1.04	69.50 ± 1.56	85.67 ± 2.52
北京晚蜜 Beijing Wanmi	0	16.64 ± 1.14	53.00 ± 4.56	65.06 ± 2.49	82.71 ± 0.44
大久保 Okubo	0	27.31 ± 0.71	56.32 ± 0.71	72.07 ± 1.07	94.57 ± 1.60
21世纪 21 Century	0	33.55 ± 1.80	63.30 ± 1.02	77.75 ± 1.24	95.25 ± 1.01
寒公主 Hangongzhu	0	14.99 ± 0.71	45.41 ± 0.78	62.88 ± 2.46	78.90 ± 1.27
中华寿桃 Zhonghua Shoutao	0	34.08 ± 1.15	64.81 ± 2.49	79.10 ± 0.99	95.66 ± 1.50
金奥 Jin’ao	0	31.90 ± 0.85	72.37 ± 2.00	83.71 ± 1.37	97.07 ± 0.52
金宝 Jinbao	0	23.45 ± 0.83	53.89 ± 1.44	68.28 ± 1.61	85.60 ± 1.84
燕特红 Yantehong	0	25.62 ± 0.68	55.71 ± 0.85	71.29 ± 1.02	94.45 ± 1.29
金黄金 Jinhuangjin	0	33.57 ± 1.43	71.33 ± 1.05	83.68 ± 2.12	97.43 ± 0.79
秋悦 Qiuyue	0	22.23 ± 2.01	53.10 ± 1.37	68.22 ± 2.06	85.18 ± 2.75
脆保 Cuibao	0	27.52 ± 0.74	56.29 ± 1.37	76.06 ± 1.63	92.93 ± 0.99
东合 1 号 Donghe 1	0	16.01 ± 0.26	47.44 ± 0.99	66.43 ± 1.67	82.20 ± 2.26
珲春 Hunchun	0	15.54 ± 0.66	45.89 ± 1.47	62.47 ± 1.54	76.00 ± 1.65
秀峰 Xiufeng	0	26.58 ± 0.80	56.58 ± 1.48	74.78 ± 1.46	93.81 ± 2.56
中油 8 号 Zhognyou 8	0	27.31 ± 0.79	57.19 ± 1.18	75.30 ± 1.42	93.18 ± 1.34
春雪 Chunxue	0	26.12 ± 1.30	57.75 ± 1.44	75.39 ± 1.32	93.90 ± 0.86

Influence of Cold Stress and Cold Resistance Evaluation on the Seedling Stage of Peach Cultivars

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品种 Cultivar	皮层厚度/mm Cortex thickenss	韧皮部厚度/mm Phloem thickenss	木质部厚度/mm Xylem thickenss	髓半径/mm Pith radius	树干半径/mm Trunk radius	皮层比率/% Cortex ratio	韧皮部比率/% Phloem ratio	木质部比率/% Xylem ratio	木皮比/% X/C ratio
中油21号 Zhongyou 21	0.28 bc	0.42 bc	4.28 cde	0.73 abc	5.72 bcdef	4.86 bc	7.42 d	74.76 abcde	15.37 ij
秋怡Qiuyi	0.25 cde	0.34 cdef	4.30 cde	0.75 ab	5.88 bcdef	4.31 def	5.79 hi	73.19 bcde	17.00 ghi
霞晖6号 Xiahui 6	0.20 e	0.38 cde	4.43 bcde	0.60 ef	5.64 cdef	3.63 hi	6.81 ef	78.50 abc	21.62 a
中油蟠7号 Zhongyoupan 7	0.26 bcde	0.26 f	4.50 bcde	0.69 abcde	5.77 bcdef	4.57 bcde	4.46 k	77.93 abc	17.07 ghi
秋燕Qiuyan	0.22 cde	0.31 ef	4.09 def	0.70 abcd	5.37 def	4.18 efg	5.74 i	76.14 abcd	18.24 efg
北京晚蜜 Beijing Wanmi	0.26 bcde	0.41 bcd	5.19 a	0.69 abcde	6.58 a	3.91 fgh	6.22 gh	78.86 abc	20.17 abc
大久保Okubo	0.22 cde	0.31 ef	4.27 cde	0.64 cde	5.45 def	4.09 efgh	5.77 i	78.27 abc	19.14 cdef
21世纪 21 Century	0.28 bc	0.33 def	4.01 ef	0.67 bcde	5.69 bcdef	4.97 b	5.87 hi	70.40 de	14.15 j
寒公主 Hangongzhu	0.27 bcd	0.39 cde	4.94 ab	0.75 ab	6.08 abc	4.37 cdef	6.39 fg	81.22 a	18.59 defg
中华寿桃 Zhonghua Shoutao	0.35 a	0.53 a	3.59 f	0.76 ab	5.96 bcd	5.87 a	8.88 a	60.19 f	10.25 k
金奥Jin’ao	0.20 e	0.26 f	4.02 def	0.60 ef	5.61 cdef	3.64 hi	4.69 k	71.78 cde	19.74 bcde
金宝Jinbao	0.21 de	0.49 ab	4.44 bcde	0.71 abcd	5.85 bcde	3.59 hi	8.39 b	75.92 abcd	21.15 ab
燕特红 Yantehong	0.32 ab	0.31 ef	4.42 bcde	0.62 def	5.79 bcdef	5.49 a	5.32 j	76.26 abcd	13.88 j
金黄金 Jinhuangjin	0.22 cde	0.37 cde	4.04 def	0.67 bcde	5.94 bcd	3.72 ghi	6.16 ghi	67.96 e	18.27 efg
秋悦Qiuyue	0.27 bcd	0.41 bcd	4.64 abcd	0.67 bcde	5.99 bcd	4.47 bcde	6.77 ef	77.55 abc	17.35 fgh
脆保Cuibao	0.24 cde	0.42 bc	3.90 ef	0.74 ab	5.31 ef	4.56 bcde	7.85 c	73.41 bcde	16.08 hi
东合1号 Donghe 1	0.23 cde	0.52 a	4.75 abc	0.75 ab	6.28 ab	3.74 ghi	8.22 bc	75.68 abcd	20.26 abcd
珲春Hunchun	0.28 bc	0.48 ab	4.72 abc	0.78 a	5.86 bcdef	4.79 bcd	8.15 bc	80.50 ab	16.79 hi
秀峰Xiufeng	0.20 e	0.34 cdef	3.92 ef	0.75 ab	5.22 f	3.92 fghi	6.51 fg	75.07 abcde	19.15 cdef
中油8号 Zhognyou 8	0.24 cde	0.41 bcd	4.39 bcde	0.74 ab	5.87 bcde	4.11 efgh	6.96 e	74.76 abcde	18.17 efg
春雪Chunxue	0.20 e	0.28 f	4.32 bcde	0.54 f	5.95 bcd	3.42 i	4.65 k	72.67 bcde	21.27 ab

品种 Cultivar	成活率/% Suvival rate					抗寒性分类 Cold tolerance classification
品种 Cultivar	0 ℃	-15 ℃	-20 ℃	-25 ℃	-30 ℃	抗寒性分类 Cold tolerance classification
中油21号 Zhongyou 21	100	100	68.89	55.56	0	较强 Relatively strong
秋怡 Qiuyi	100	100	86.67	64.44	0	强 Strong
霞晖6号 Xiahui 6	100	100	64.44	51.11	0	较强 Relatively strong
中油蟠7号 Zhongyoupan 7	100	100	60.00	40.00	0	较弱 Relatively weak
秋燕 Qiuyan	100	100	86.67	75.56	0	强 Strong
北京晚蜜 Beijing Wanmi	100	100	86.67	80.00	0	极强 Extremely strong
大久保 Okubo	100	100	62.22	44.44	0	较弱 Relatively weak
21世纪 21 Century	100	100	31.11	0	0	弱Weak
寒公主 Hangongzhu	100	100	91.11	82.22	0	极强 Extremely strong
中华寿桃 Zhonghua Shoutao	100	100	35.56	0	0	弱 Weak
金奥 Jin’ao	100	100	28.89	0	0	弱Weak
金宝 Jinbao	100	100	88.89	53.33	0	较强 Relatively strong
燕特红 Yantehong	100	100	55.56	40.00	0	较弱 Relatively weak
金黄金 Jinhuangjin	100	100	33.33	0	0	弱 Weak
秋悦 Qiuyue	100	100	88.89	62.22	0	强 Strong
脆保 Cuibao	100	100	80.00	64.44	0	强 Strong
东合1号 Donghe 1	100	100	88.89	84.44	0	极强 Extremely strong
珲春 Hunchun	100	100	91.11	86.67	0	极强 Extremely strong
秀峰 Xiufeng	100	100	64.44	40.00	0	较弱 Relatively weak
中油8号 Zhognyou 8	100	100	60.00	51.11	0	较强 Relatively strong
春雪 Chunxue	100	100	62.22	48.89	0	较弱 Relatively weak

品种 Cultivar	隶属度 Membership degree
品种 Cultivar	CT	PT	XT	PR1	TR	CR	PR2	XR	(X/C)R	BR
中油 21 号 Zhongyou 21	0.47	0.59	0.43	0.79	0.37	0.41	0.67	0.69	0.45	0.32
秋怡 Qiuyi	0.67	0.30	0.44	0.27	0.49	0.64	0.30	0.62	0.59	0.56
霞晖 6 号 Xiahui 6	1.00	0.44	0.53	0.08	0.31	0.91	0.53	0.87	1.00	0.47
中油蟠 7 号 Zhongyoupan 7	0.87	0.41	0.28	0.17	0.53	0.88	0.38	0.37	0.51	0.00
秋燕 Qiuyan	0.87	0.19	0.31	0.21	0.11	0.69	0.29	0.76	0.70	0.67
北京晚蜜 Beijing Wanmi	0.60	0.56	1.00	0.19	1.00	0.80	0.40	0.89	0.87	0.88
大久保 Okubo	0.87	0.19	0.43	0.13	0.17	0.73	0.30	0.86	0.78	0.55
21世纪 21 Century	0.47	0.26	0.26	0.17	0.35	0.37	0.32	0.49	0.34	0.40
寒公主 Hangongzhu	0.53	0.48	0.84	0.27	0.63	0.61	0.44	1.00	0.73	0.98
中华寿桃 Zhonghua Shoutao	0	1.00	0	0.28	0.54	0	1.00	0	0	0.22
金奥 Jin’ao	1.00	0	0.27	0.08	0.29	0.91	0.05	0.55	0.83	0.00
金宝 Jinbao	0.93	0.85	0.53	0.22	0.46	0.93	0.89	0.75	0.96	0.73
燕特红 Yantehong	0.60	0.00	0.57	0.19	0.40	0.53	0.00	0.84	0.71	0.28
金黄金 Jinhuangjin	0.20	0.19	0.52	0.10	0.42	0.16	0.19	0.76	0.32	0.58
秋悦 Qiuyue	0.53	0.56	0.66	0.17	0.57	0.57	0.52	0.83	0.62	0.73
脆保 Cuibao	0.73	0.59	0.19	0.26	0.07	0.53	0.77	0.63	0.60	0.36
东合 1 号 Donghe 1	0.80	0.96	0.73	0.27	0.78	0.87	0.85	0.74	0.88	0.81
珲春 Hunchun	0.47	0.81	0.71	0.31	0.47	0.44	0.83	0.97	0.58	1.00
秀峰 Xiufeng	1.00	0.30	0.21	0.27	0.00	0.80	0.46	0.71	0.78	0.42
中油 8 号 Zhognyou 8	0.73	0.56	0.50	0.26	0.48	0.72	0.57	0.69	0.70	0.40
春雪 Chunxue	1.00	0.07	0.46	0	0.54	1.00	0.04	0.59	0.97	0.39
品种	隶属度 Membership degree					平均隶属度			抗寒性排序
Cultivar	REC	MDA	PAL	Pro	SS	Average membership degree			Cold resistance
中油 21 号 Zhongyou 21	0.34	0.39	0.22	0.19	0.21	0.436			12
秋怡 Qiuyi	0.81	0.75	0.47	0.29	0.41	0.506			9
霞晖 6 号 Xiahui 6	0.49	0.47	0.29	0.19	0.21	0.519			8
中油蟠 7 号 Zhongyoupan 7	0.84	0.10	0.10	0.09	0.04	0.371			16
秋燕 Qiuyan	0.75	0.94	0.55	0.56	0.27	0.523			7
北京晚蜜 Beijing Wanmi	0.88	0.66	0.57	0.66	0.54	0.699			4
大久保 Okubo	0.37	0.26	0.12	0.44	0.27	0.429			15
21世纪 21 Century	0.16	0	0	0.08	0.00	0.244			20
寒公主 Hangongzhu	1.00	0.88	0.82	0.89	0.84	0.731			3
中华寿桃 Zhonghua Shoutao	0.11	0.04	0.06	0.06	0	0.221			21
金奥 Jin’ao	0.13	0.12	0.06	0	0.11	0.293			19
金宝 Jinbao	0.34	0.81	0.55	0.69	0.30	0.663			5
燕特红 Yantehong	0.00	0.39	0.40	0.13	0.21	0.350			17
金黄金 Jinhuangjin	0.21	0.32	0.08	0.39	0.22	0.311			18
秋悦 Qiuyue	0.68	0.81	0.64	0.51	0.42	0.587			6
脆保 Cuibao	0.31	0.38	0.39	0.35	0.35	0.434			13
东合 1 号 Donghe 1	0.90	0.97	0.88	1.00	0.74	0.812			1
珲春 Hunchun	0.86	1.00	1.00	0.95	1.00	0.760			2
秀峰 Xiufeng	0.39	0.40	0.38	0.16	0.23	0.433			14
中油 8 号 Zhognyou 8	0.31	0.43	0.29	0.26	0.20	0.472			10
春雪 Chunxue	0.32	0.28	0.37	0.35	0.19	0.438			11

指标 Index	主成分1 PC1	主成分2 PC2	主成分3 PC3	主成分4 PC4
皮层 Cortex	0.01	0.44	0.41	0.07
韧皮部Phloem	0.18	0.33	-0.38	0.29
木质部 Xylem	0.30	-0.13	0.30	0.28
髓半径 Pith radius	0.16	0.33	-0.24	-0.24
树干半径 Trunk radius	0.17	0.07	0.21	0.74
皮层比率 Cortex ratio	-0.07	0.44	0.35	-0.20
韧皮部比率 Phloem ratio	0.14	0.34	-0.48	0.10
木质部比率 Xylem ratio	0.26	-0.24	0.22	-0.26
木皮比 X/C ratio	0.13	-0.44	-0.24	0.16
褐变率 Browning rate	-0.35	-0.03	-0.15	0.08
相对电导率 Relative electrical conductivity	-0.32	0.00	-0.01	0.23
丙二醛 Malondialdehyde	-0.34	0.03	0.06	0.15
苯丙氨酸解氨酶 Phenylalanine ammonia-lyase	0.36	0.02	-0.03	-0.07
游离脯氨酸 Proline	0.35	0.01	0	0.02
可溶性糖 Soluble suga	0.35	0.02	0.06	-0.09
特征值 Eigenvalue	7.19	3.75	1.56	1.20
贡献率/% Contribution rate	47.94	25.02	10.39	8.00
累积贡献率/% Cumulative contribution rate	47.94	72.96	83.35	91.35

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