Effects of Silicon Nutrition and Grafting Rootstocks on Chilling Tolerance of Cucumber Seedlings

doi:10.16420/j.issn.0513-353x.2021-0379

Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (8): 1795-1804.doi: 10.16420/j.issn.0513-353x.2021-0379

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Effects of Silicon Nutrition and Grafting Rootstocks on Chilling Tolerance of Cucumber Seedlings

NIE Xinmiao¹, LUAN Heng¹, FENG Gaili¹, WANG Chao¹^,², LI Yan¹^,²^,³, WEI Min¹^,²^,³^,^*()

1. College of Horticultural Science and Engineering,Shandong Agricultural University,Tai’an,Shandong 271018,China
2. Scientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region,Ministry of Agriculture and Rural Affairs,Tai’an,Shandong 271018,China
3. State Key Laboratory of Crop Biology,Tai’an,Shandong 271018,China

Received:2022-02-21 Revised:2022-04-06 Online:2022-08-25 Published:2022-09-05
Contact: WEI Min E-mail:minwei@sdau.edu.cn

Abstract

Abstract:

In this study,effects of silicon nutrition and grafting rootstocks on chilling tolerance of‘Xintaimici’cucumber（Cucumis sativus L.）were investigated by using hydroponic non-grafted seedlings and grafted seedlings on both strong de-blooming rootstock‘Huangchenggen 2’（Cucurbita moschata Duch）and weak de-blooming rootstock‘Yunnan Figleaf Gourd’（Cucurbita ficifolia Bouché）. The results showed that,under low temperature stress,chilling injury index（CII）of non-grafted cucumber seedlings treated with silicon was significantly lower than that without silicon. The lowest CII was observed in grafted cucumber seedlings on‘Yunnan Figleaf Gourd’followed by the grafted ones on ‘Huangchenggen 2’and finally the non-grafted ones,regardless of silicon supplementation. The significant reduction in electrolyte leakage rate and malondialdehyde content,and the significant enhancement in proline content and antioxidant enzyme（SOD,POD and CAT）activities were observed in the leaves of seedlings supplemented with silicon relative to those without silicon,and in the leaves of grafted seedlings relative to the non-grafted ones,and the alterations in these tolerance-related parameters were greater for grafting treatment,in particular‘Yunnan Figleaf Gourd’used as rootstock,than silicon supplementation. Altogether,our study revealed that both rootstocks and silicon nutrition can improve the chilling tolerance of cucumber seedlings,while grafting treatment displays better performance than silicon supplementation,and for grafting treatment,‘Yunnan Figleaf Gourd’is superior to‘Huangchenggen 2’in alleviating the detrimental effects of chilling stress on cucumber seedlings.

Key words: cucumber, silicon, rootstock, low temperature, chilling tolerance

CLC Number:

S642.2

NIE Xinmiao, LUAN Heng, FENG Gaili, WANG Chao, LI Yan, WEI Min. Effects of Silicon Nutrition and Grafting Rootstocks on Chilling Tolerance of Cucumber Seedlings[J]. Acta Horticulturae Sinica, 2022, 49(8): 1795-1804.

Figures/Tables 10

References 28

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硅浓度/（mmol · L^-1） Silicon concentration	冷害指数 Chilling injury index
硅浓度/（mmol · L^-1） Silicon concentration	1 d	3 d	5 d	7 d
0	0.37 ± 0.01 a	0.63 ± 0.05 b	0.77 ± 0.03 b	0.93 ± 0.03 b
0.5	0.33 ± 0.03 c	0.52 ± 0.05 d	0.64 ± 0.04 d	0.80 ± 0.02 d
1.0	0.33 ± 0.02 bc	0.59 ± 0.06 c	0.69 ± 0.03 c	0.86 ± 0.02 c
1.5	0.34 ± 0.02 abc	0.60 ± 0.05 bc	0.71 ± 0.03 c	0.87 ± 0.01 c
2.0	0.37 ± 0.02 ab	0.68 ± 0.05 a	0.81 ± 0.03 a	0.96 ± 0.02 a

硅浓度/（mmol · L^-1） Silicon concentration	冷害指数 Chilling injury index
硅浓度/（mmol · L^-1） Silicon concentration	1 d	3 d	5 d	7 d
0	0.37 ± 0.01 a	0.63 ± 0.05 b	0.77 ± 0.03 b	0.93 ± 0.03 b
0.5	0.33 ± 0.03 c	0.52 ± 0.05 d	0.64 ± 0.04 d	0.80 ± 0.02 d
1.0	0.33 ± 0.02 bc	0.59 ± 0.06 c	0.69 ± 0.03 c	0.86 ± 0.02 c
1.5	0.34 ± 0.02 abc	0.60 ± 0.05 bc	0.71 ± 0.03 c	0.87 ± 0.01 c
2.0	0.37 ± 0.02 ab	0.68 ± 0.05 a	0.81 ± 0.03 a	0.96 ± 0.02 a

硅浓度/（mmol · L^-1） Silicon concentration	株高抑制率/% Inhibition rate of plant height				茎粗抑制率/% Inhibition rate of stem diameter
硅浓度/（mmol · L^-1） Silicon concentration	1 d	3 d	5 d	7 d	1 d	3 d	5 d	7 d
0	3.18 ± 0.09 a	9.71 ± 0.50 a	15.05 ± 0.24 a	19.33 ± 0.19 a	2.36 ± 0.34 b	11.13 ± 0.31 a	19.18 ± 1.41 a	25.02 ± 0.77 b
0.5	2.48 ± 0.33 c	7.12 ± 0.18 c	11.64 ± 0.29 d	16.23 ± 0.41 e	1.71 ± 0.05 c	6.69 ± 0.32 d	10.27 ± 0.61 d	18.84 ± 0.59 d
1.0	2.79 ± 0.07 b	7.70 ± 0.11 b	11.99 ± 0.35 cd	17.20 ± 0.30 d	1.79 ± 0.02 c	8.30 ± 0.22 c	14.98 ± 0.78 c	21.39 ± 0.37 c
1.5	2.80 ± 0.04 b	7.99 ± 0.07 b	12.26 ± 0.46 c	17.59 ± 0.02 c	1.82 ± 0.03 c	9.40 ± 0.13 b	16.90 ± 0.93 b	21.65 ± 0.40 c
2.0	3.06 ± 0.07 ab	9.92 ± 0.15 a	14.00 ± 0.21 b	18.55 ± 0.41 b	2.73 ± 0.20 a	11.25 ± 0.31 a	19.00 ± 0.70 a	27.08 ± 0.22 a

硅浓度/（mmol · L^-1） Silicon concentration	株高抑制率/% Inhibition rate of plant height				茎粗抑制率/% Inhibition rate of stem diameter
硅浓度/（mmol · L^-1） Silicon concentration	1 d	3 d	5 d	7 d	1 d	3 d	5 d	7 d
0	3.18 ± 0.09 a	9.71 ± 0.50 a	15.05 ± 0.24 a	19.33 ± 0.19 a	2.36 ± 0.34 b	11.13 ± 0.31 a	19.18 ± 1.41 a	25.02 ± 0.77 b
0.5	2.48 ± 0.33 c	7.12 ± 0.18 c	11.64 ± 0.29 d	16.23 ± 0.41 e	1.71 ± 0.05 c	6.69 ± 0.32 d	10.27 ± 0.61 d	18.84 ± 0.59 d
1.0	2.79 ± 0.07 b	7.70 ± 0.11 b	11.99 ± 0.35 cd	17.20 ± 0.30 d	1.79 ± 0.02 c	8.30 ± 0.22 c	14.98 ± 0.78 c	21.39 ± 0.37 c
1.5	2.80 ± 0.04 b	7.99 ± 0.07 b	12.26 ± 0.46 c	17.59 ± 0.02 c	1.82 ± 0.03 c	9.40 ± 0.13 b	16.90 ± 0.93 b	21.65 ± 0.40 c
2.0	3.06 ± 0.07 ab	9.92 ± 0.15 a	14.00 ± 0.21 b	18.55 ± 0.41 b	2.73 ± 0.20 a	11.25 ± 0.31 a	19.00 ± 0.70 a	27.08 ± 0.22 a

硅浓度/（mmol · L^-1） Silicon concentration	干物质抑制率/% Inhibition rate of dry matter				电解质渗漏率/% Electrolyte leakage rate
硅浓度/（mmol · L^-1） Silicon concentration	1 d	3 d	5 d	7 d	1 d	3 d	5 d	7 d
0	10.99 ± 0.84 a	24.66 ± 1.12 ab	33.66 ± 1.03 a	44.05 ± 0.39 ab	37.34 ± 1.28 a	47.25 ± 0.87 a	50.50 ± 0.54 a	57.36 ± 1.52 ab
0.5	8.94 ± 0.03 c	21.53 ± 0.57 c	31.64 ± 0.32 b	42.64 ± 0.47 b	34.28 ± 1.79 b	40.51 ± 0.27 d	45.32 ± 0.61 c	51.09 ± 0.60 d
1.0	9.43 ± 0.24 b	22.62 ± 0.09 bc	32.84 ± 0.35 ab	43.58 ± 0.35 ab	36.01 ± 0.59 ab	43.03 ± 0.28 c	47.54 ± 0.45 b	54.53 ± 1.36 c
1.5	9.56 ± 0.23 b	22.69 ± 0.50 bc	33.07 ± 1.23 ab	43.81 ± 0.63 ab	36.72 ± 1.38 a	44.98 ± 1.40 b	48.36 ± 1.38 b	55.60 ± 2.05 bc
2.0	10.90 ± 0.49 a	24.43 ± 1.29 a	33.64 ± 1.33 a	44.82 ± 1.02 a	38.09 ± 0.19 a	48.64 ± 1.82 a	50.66 ± 0.60 a	58.99 ± 1.44 a

Effects of Silicon Nutrition and Grafting Rootstocks on Chilling Tolerance of Cucumber Seedlings

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处理 Treatment	冷害指数 Chilling injury index
处理 Treatment	1 d	3 d	5 d	7 d
自根苗 Non-grafted seedlings	0.37 ± 0.01 a	0.63 ± 0.05 a	0.77 ± 0.03 a	0.93 ± 0.03 a
‘黄诚根2号’嫁接苗‘Huangchenggen 2’grafted seedlings	0.28 ± 0.03 c	0.45 ± 0.01 c	0.59 ± 0.04 c	0.66 ± 0.02 c
‘云南黑籽南瓜’嫁接苗‘Yunnan Figleaf Gourd’grafted seedlings	0.23 ± 0.01 d	0.38 ± 0.02 d	0.51 ± 0.05 d	0.59 ± 0.01 d
自根苗 + Si Non-grafted seedlings + Si	0.33 ± 0.03 b	0.52 ± 0.05 b	0.64 ± 0.04 b	0.80 ± 0.02 b
‘黄诚根2号’嫁接苗 + Si ‘Huangchenggen 2’grafted seedlings + Si	0.25 ± 0.02 cd	0.32 ± 0.10 de	0.51 ± 0.03 d	0.63 ± 0.02 cd
‘云南黑籽南瓜’嫁接苗 + Si ‘Yunnan Figleaf Gourd’grafted seedlings + Si	0.22 ± 0.02 d	0.31 ± 0.03 e	0.42 ± 0.05 e	0.53 ± 0.01 e

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