Effects of NaCl stress on the germination of different types of welsh onions

doi:10.16178/j.issn.0528-9017.20240325

Abstract

Abstract:

To investigate the salt tolerance of welsh onion seeds during germination, nine different types of welsh onion seeds were used as experimental materials. The seeds were treated with varying concentrations of NaCl to study the effects of salt stress on seed germination. The results showed that at NaCl concentrations below 100 mmol·L^-1, the relative germination rate of welsh onion seeds did not differ significantly from that under 0 mmol·L^-1 NaCl treatment. Relative germination rate of most varieties was significantly inhibited at a NaCl concentration of 200 mmol·L^-1. Under 250 mmol·L^-1 NaCl, the relative germination rate of varieties 2 and 3 remained above 80%, while that of other varieties decreased to below 60%. Additionally, the relative germination vigor of all varieties dropped below 30%. Therefore, 250 mmol·L^-1 NaCl was identified as a suitable concentration for evaluating the salt tolerance of welsh onion germplasm resources. Based on a comprehensive evaluation of indicators including relative germination rate, relative germination vigor, relative germination index, root length, and shoot length, the salt tolerance during the germination stage of different welsh onion types was ranked as follows: club-shaped welsh onion > export-preserved welsh onion > drumstick welsh onion > tillering welsh onion. Among the tested varieties, variety 3 (Lucongza 5) exhibited the least inhibition of seed germination under salt stress. This study lays the foundation for the future breeding of salt-tolerant varieties and their promotion in saline-alkali soils.

Key words: welsh onion, germination stage, salt tolerance, comprehensive evaluation

CLC Number:

S663.1

WANG Qinghua, YUE Lixin, LIU Zezhou, GAO Limin. Effects of NaCl stress on the germination of different types of welsh onions[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(9): 2157-2164.

Figures/Tables 11

References 30

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品种编号	品种名	类型
1	章丘大梧桐	棒状大葱
2	鲁葱杂1号	棒状大葱
3	鲁葱杂5号	棒状大葱
4	鲁秋葱4号	出口保鲜大葱
5	鲁秋葱5号	出口保鲜大葱
6	鲁葱3号	鸡腿大葱
7	鲁葱8号	鸡腿大葱
8	分葱1号	分蘖大葱
9	分葱2号	分蘖大葱

品种编号	品种名	类型
1	章丘大梧桐	棒状大葱
2	鲁葱杂1号	棒状大葱
3	鲁葱杂5号	棒状大葱
4	鲁秋葱4号	出口保鲜大葱
5	鲁秋葱5号	出口保鲜大葱
6	鲁葱3号	鸡腿大葱
7	鲁葱8号	鸡腿大葱
8	分葱1号	分蘖大葱
9	分葱2号	分蘖大葱

品种编号	不同NaCl浓度(mmol·L^-1)的相对发芽率/%
品种编号	0	50	100	150	200	250	300	350
1	100.00 a A	101.70 a A	102.04 a A	82.31 ab AB	66.67 b B	31.63 c C	27.55 c C	24.15 c C
2	100.00 a A	98.67 a A	100.00 a A	93.33 a A	96.00 a A	80.00 a AB	53.33 b BC	28.33 c C
3	100.00 a A	101.03 a A	101.38 a A	99.31 a A	96.55 a A	94.82 a A	62.07 b B	31.72 c C
4	100.00 a A	100.34 a A	100.68 a A	95.98 a A	87.92 a A	57.05 b B	29.53 c C	4.03 d C
5	100.00 a A	99.33 a A	98.66 a A	97.65 a A	74.16 b AB	49.33 c B	28.67 d C	7.33 d C
6	100.00 a A	99.63 a A	93.63 a A	86.52 a A	51.69 b B	37.45 b BC	32.96 bc BC	16.11 c C
7	100.00 a A	100.68 a A	100.00 a A	89.78 bc AB	77.78 c B	36.00 d C	26.44 c B	7.11 e D
8	100.00 a A	99.33 a A	100.00 a A	100.00 a A	87.54 a A	36.36 b B	14.82 c BC	6.73 c C
9	100.00 a A	100.00 a A	98.33 a A	96.98 a A	64.77 b B	18.12 c C	13.09 c C	9.73 c C

品种编号	不同NaCl浓度(mmol·L^-1)的相对发芽率/%
品种编号	0	50	100	150	200	250	300	350
1	100.00 a A	101.70 a A	102.04 a A	82.31 ab AB	66.67 b B	31.63 c C	27.55 c C	24.15 c C
2	100.00 a A	98.67 a A	100.00 a A	93.33 a A	96.00 a A	80.00 a AB	53.33 b BC	28.33 c C
3	100.00 a A	101.03 a A	101.38 a A	99.31 a A	96.55 a A	94.82 a A	62.07 b B	31.72 c C
4	100.00 a A	100.34 a A	100.68 a A	95.98 a A	87.92 a A	57.05 b B	29.53 c C	4.03 d C
5	100.00 a A	99.33 a A	98.66 a A	97.65 a A	74.16 b AB	49.33 c B	28.67 d C	7.33 d C
6	100.00 a A	99.63 a A	93.63 a A	86.52 a A	51.69 b B	37.45 b BC	32.96 bc BC	16.11 c C
7	100.00 a A	100.68 a A	100.00 a A	89.78 bc AB	77.78 c B	36.00 d C	26.44 c B	7.11 e D
8	100.00 a A	99.33 a A	100.00 a A	100.00 a A	87.54 a A	36.36 b B	14.82 c BC	6.73 c C
9	100.00 a A	100.00 a A	98.33 a A	96.98 a A	64.77 b B	18.12 c C	13.09 c C	9.73 c C

品种编号	不同NaCl浓度(mmol·L^-1)的相对发芽势/%
品种编号	0	50	100	150	200	250	300	350
1	100.00 a A	100.35 a A	100.00 a A	65.76 b B	34.93 c C	6.85 d D	2.40 d D	0.69d D
2	100.00 a A	98.32 a A	100.33 a A	62.21 b B	44.15 c B	14.72 d C	2.68 de C	0 e C
3	100.00 a A	100.69 a A	96.88 a AB	86.11 ab AB	77.78 b B	26.04 c C	4.86 d D	0 d D
4	100.00 a A	100.34 a A	99.67 a A	88.59 a A	52.02 b B	8.39 c C	1.34 c C	0 c C
5	100.00 a A	99.00 a A	98.66 a AB	95.98 a AB	70.81 b BC	11.75 c C	2.69 d D	0 d D
6	100.00 a A	92.40 a A	86.69 a A	39.92 b B	2.66 c C	2.28 c C	1.52 c C	0 c C
7	100.00 a A	100.18 a A	83.86 b B	38.57 c C	5.83 d D	0.90 d D	0 d D	0 d D
8	100.00 a A	99.32 a A	98.65 a A	93.58 ab A	82.77 b A	15.54 c B	2.37 cd B	0 d B
9	100.00 a A	99.00 a A	97.32 a A	88.93 a A	38.59 b B	3.36 c C	0 c C	0 c C