嫁接对低温胁迫下马铃薯苗抗寒性的影响

doi:10.3969/j.issn.1004-1524.20240718

浙江农业学报 ›› 2025, Vol. 37 ›› Issue (8): 1615-1623.DOI: 10.3969/j.issn.1004-1524.20240718

嫁接对低温胁迫下马铃薯苗抗寒性的影响

刘国敏(), 郑虚, 廖玉娇, 覃叶欣, 覃维治()

广西壮族自治区农业科学院经济作物研究所,广西南宁 530007

收稿日期:2024-08-06 出版日期:2025-08-25 发布日期:2025-09-03
作者简介:刘国敏(1989—),女,山东曹县人,硕士,助理研究员,主要从事薯类栽培与育种研究工作。E-mail:1158593947@qq.com
通讯作者: *覃维治,E-mail:664725866@qq.com
基金资助:
广西农业科学院基本科研业务专项(桂农科2024YP058);广西桂平特色作物试验站(TS202131);广西农业科学院基本科研业务专项稳定资助科研团队项目(桂农科2021YT059);广西农作物育种联合攻关项目(桂农厅发〔2025〕100号)

Effect of grafting on cold resistance of potato seedlings under low temperature stress

LIU Guomin(), ZHENG Xu, LIAO Yujiao, QIN Yexin, QIN Weizhi()

Cash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China

Received:2024-08-06 Online:2025-08-25 Published:2025-09-03
Contact: QIN Weizhi

摘要/Abstract

摘要： 为探究嫁接对低温胁迫下不同马铃薯材料的影响,以抗寒品种桂农薯1号(G1)和不抗寒品种陇薯9号(L9)作为试验材料,进行砧穗互接,得到L9G1、G1L9两个嫁接组合,将G1、G1L9、L9G1、L9置于光照培养箱中进行4、0 ℃低温处理,以25 ℃为对照,测定马铃薯叶片抗氧化酶活性、膜脂过氧化指标、渗透调节物质含量。对抗寒相关指标进行抗寒系数计算,并利用抗寒系数进行相关性分析、主成分分析(PCA)、隶属函数值和权重法分析,综合评价马铃薯材料的抗寒性。结果表明:可溶性糖(SS)含量与过氧化氢酶(CAT)活性的抗寒性系数呈显著(p<0.05)正相关,相对电导率(REC)与超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量的抗寒性系数呈显著负相关。通过主成分分析将9个单一指标转化为2个综合指标,SOD活性、MDA含量、可溶性蛋白(SP)含量、REC和CAT活性可以作为衡量马铃薯材料抗寒性的指标。通过计算综合抗寒能力,发现4个马铃薯材料抗寒性排序依次为G1>L9G1>G1L9>L9。综合分析认为,抗寒性强的马铃薯品种无论是作为砧木还是作为接穗,均可以提高嫁接组合的抗寒性,并且作砧木时对嫁接组合抗寒性的影响较大。

关键词: 马铃薯, 嫁接, 抗寒性, 主成分分析, 隶属函数分析, 综合抗寒能力

Abstract:

To investigate the effects of grafting on different potato materials under lowtemperature stress, cold-resistant cultivar Guinongshu 1 (G1) and cold-sensitive cultivar Longshu 9 (L9) were reciprocally grafted, yielding two graft combinations (L9G1 and G1L9). G1, G1L9, L9G1, and L9 were subjected to 4 ℃ and 0 ℃ treatments in a light incubator, with 25 ℃ as the control. Antioxidant enzyme activities, membrane lipid peroxidation indices, and osmotic adjustment substance contents in potato leaves were measured. Cold resistance coefficients of relevant indicators were calculated and analyzed using correlation analysis, principal component analysis (PCA), membership function values, and weighting methods to comprehensively evaluate cold resistance. Results showed that, soluble sugar (SS) content was significantly (p<0.05) positively correlated with the cold resistance coefficient of catalase (CAT) activity, while relative electrical conductivity (REC) was significantly negatively correlated with the cold resistance coefficients of superoxide dismutase (SOD) activity and malondialdehyde (MDA) content. Nine individual indicators were transformed into two comprehensive indicators by PCA. SOD activity, MDA content, soluble protein (SP) content, REC, and CAT activity could be served as key indicators to evaluate potato cold resistance. The comprehensive cold resistance ability of these four materials followed the order of G1>L9G1>G1L9>L9. It was concluded that the cold-resistant potato cultivars enhanced the cold resistance of graft combinations whether used as rootstock or scion, with rootstock exerting a greater influence.

Key words: potato, grafting, cold resistance, principal component analysis, membership function analysis, comprehensive cold resistance

中图分类号:

S532

刘国敏, 郑虚, 廖玉娇, 覃叶欣, 覃维治. 嫁接对低温胁迫下马铃薯苗抗寒性的影响[J]. 浙江农业学报, 2025, 37(8): 1615-1623.

LIU Guomin, ZHENG Xu, LIAO Yujiao, QIN Yexin, QIN Weizhi. Effect of grafting on cold resistance of potato seedlings under low temperature stress[J]. Acta Agriculturae Zhejiangensis, 2025, 37(8): 1615-1623.

图/表 7

参考文献 41

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材料 Material	处理温度 Treatment temperature/℃	MDA/ (nmol·g^-1)	Pro/ (μg·g^-1)	SS/ (mg·g^-1)	SP/ (mg·g^-1)	H₂O₂/ (μmol·g^-1)	REC/%
L9	25	23.12 c	66.91 b	8.53 c	4.11 b	0.93 b	68.92 a
	4	36.86 b	150.27 a	26.17 a	4.69 a	1.37 a	60.38 a
	0	46.97 a	148.50 a	9.95 b	4.22 b	1.52 a	61.19 a
G1	25	12.49 b	46.22 c	4.20 b	3.47 b	1.02 b	72.82 b
	4	23.54 a	89.56 b	12.34 a	4.14 a	1.22 a	60.73 c
	0	24.27 a	115.42 a	12.59 a	2.87 c	0.99 b	82.62 a
G1L9	25	21.17 a	52.43 c	6.75 c	2.40 c	1.09 b	40.92 c
	4	24.24 a	187.67 a	15.46 a	4.32 a	1.26 a	58.22 b
	0	24.88 a	121.19 b	12.46 b	3.83 b	0.97 b	87.48 a
L9G1	25	22.03 c	56.05 c	8.91 c	2.70 b	2.52 a	67.00 a
	4	39.72 b	161.27 b	19.33 a	3.10 a	1.58 b	59.24 a
	0	49.90 a	207.43 a	16.60 b	3.19 a	1.14 c	63.94 a

材料 Material	处理温度 Treatment temperature/℃	MDA/ (nmol·g^-1)	Pro/ (μg·g^-1)	SS/ (mg·g^-1)	SP/ (mg·g^-1)	H₂O₂/ (μmol·g^-1)	REC/%
L9	25	23.12 c	66.91 b	8.53 c	4.11 b	0.93 b	68.92 a
	4	36.86 b	150.27 a	26.17 a	4.69 a	1.37 a	60.38 a
	0	46.97 a	148.50 a	9.95 b	4.22 b	1.52 a	61.19 a
G1	25	12.49 b	46.22 c	4.20 b	3.47 b	1.02 b	72.82 b
	4	23.54 a	89.56 b	12.34 a	4.14 a	1.22 a	60.73 c
	0	24.27 a	115.42 a	12.59 a	2.87 c	0.99 b	82.62 a
G1L9	25	21.17 a	52.43 c	6.75 c	2.40 c	1.09 b	40.92 c
	4	24.24 a	187.67 a	15.46 a	4.32 a	1.26 a	58.22 b
	0	24.88 a	121.19 b	12.46 b	3.83 b	0.97 b	87.48 a
L9G1	25	22.03 c	56.05 c	8.91 c	2.70 b	2.52 a	67.00 a
	4	39.72 b	161.27 b	19.33 a	3.10 a	1.58 b	59.24 a
	0	49.90 a	207.43 a	16.60 b	3.19 a	1.14 c	63.94 a

材料 Material	处理温度 Treatment temperature/℃	SOD/ (U·g^-1)	CAT/ (μmoL· min^-1·g^-1)	POD/ (μmoL· min^-1·g^-1)
L9	25	1 161.20 c	733.54 a	2 255.14 a
	4	2 519.28 a	739.69 a	1 968.43 b
	0	1 958.00 b	270.90 b	2 226.63 a
G1	25	1 055.04 b	184.74 c	734.48 c
	4	1 668.84 a	680.60 a	1 273.08 b
	0	1 750.65 a	298.52 b	1 852.94 a
G1L9	25	1 424.74 a	240.76 c	684.82 b
	4	1 349.38 a	349.45 a	463.14 c
	0	1 238.98 a	272.51 b	934.69 a
L9G1	25	1 215.97 c	229.82 b	696.45 c
	4	1 758.16 b	264.91 a	2 462.18 a
	0	1 977.45 a	229.36 b	1 564.87 b

材料 Material	处理温度 Treatment temperature/℃	SOD/ (U·g^-1)	CAT/ (μmoL· min^-1·g^-1)	POD/ (μmoL· min^-1·g^-1)
L9	25	1 161.20 c	733.54 a	2 255.14 a
	4	2 519.28 a	739.69 a	1 968.43 b
	0	1 958.00 b	270.90 b	2 226.63 a
G1	25	1 055.04 b	184.74 c	734.48 c
	4	1 668.84 a	680.60 a	1 273.08 b
	0	1 750.65 a	298.52 b	1 852.94 a
G1L9	25	1 424.74 a	240.76 c	684.82 b
	4	1 349.38 a	349.45 a	463.14 c
	0	1 238.98 a	272.51 b	934.69 a
L9G1	25	1 215.97 c	229.82 b	696.45 c
	4	1 758.16 b	264.91 a	2 462.18 a
	0	1 977.45 a	229.36 b	1 564.87 b

材料 Material	SOD	CAT	POD	MDA	Pro	SS	SP	H₂O₂	REC
L9	168.62	36.93	98.74	203.13	221.93	116.62	102.82	164.24	88.78
G1	165.93	161.58	252.28	194.26	249.70	299.65	82.77	97.38	113.46
G1L9	86.96	113.19	136.49	117.56	231.16	184.69	159.26	88.84	213.77
L9G1	162.62	99.80	224.69	226.54	370.05	186.33	117.94	45.00	95.43

嫁接对低温胁迫下马铃薯苗抗寒性的影响

Effect of grafting on cold resistance of potato seedlings under low temperature stress

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参考文献 41

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Metrics

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指标 Index	SOD	CAT	POD	MDA	Pro	SS	SP	H₂O₂
CAT	-0.162
POD	0.340	0.809
MDA	0.942	-0.203	0.389
Pro	0.302	0.120	0.574	0.586
SS	0.087	0.961^*	0.851	-0.011	0.076
SP	-0.907	-0.128	-0.445	-0.737	-0.027	-0.394
H₂O₂	0.197	-0.571	-0.691	-0.056	-0.797	-0.420	-0.282
REC	-0.984^*	0.303	-0.242	-0.968^*	-0.367	0.072	0.821	-0.192

主成分	特征值	贡献率	累计贡献率
Principal component	Eigenvalue	Contribution rate/%	Cumulative contribution rate/%
1	4.152	46.128	46.128
2	3.263	36.252	82.380
3	1.586	17.620	100.000

指标 Index	主成分载荷矩阵 Principal component load matrix		特征向量 Eigenvector
指标 Index	PC1	PC2	PC1	PC2
SOD	0.896	-0.432	0.440	-0.240
CAT	0.218	0.909	0.110	0.500
POD	0.712	0.701	0.350	0.390
MDA	0.908	-0.352	0.450	-0.190
Pro	0.567	0.295	0.280	0.160
SS	0.409	0.765	0.200	0.420
SP	-0.838	0.249	-0.410	0.140
H₂O₂	-0.227	-0.794	-0.110	-0.440
REC	-0.853	0.519	-0.420	0.290

材料 Material	综合得分 Comprehensive score		隶属函数值 Membership function value		综合抗寒能力 Comprehensive cold resistance ability	排序 Ranking
材料 Material	F₁	F₂	μ₁	μ₂	综合抗寒能力 Comprehensive cold resistance ability	排序 Ranking
L9	-0.205	-2.664	0.603	0	0.338	4
G1	1.511	1.141	1.000	1.000	1.000	1
G1L9	-2.815	1.061	0	0.979	0.431	3
L9G1	1.509	0.463	0.999	0.822	0.921	2
权重Weight	—	—	0.560	0.440	—	—

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