Crops ›› 2022, Vol. 38 ›› Issue (5): 167-173.doi: 10.16035/j.issn.1001-7283.2022.05.024

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The Effects of S-ABA on Germination and Growth of Maize under Salt-Alkali Stress

Zhang Jianye(), Du Qingzhi, Liu Xiang, Deng Jiahui, Jiao Qin, Gong Luo, Jiang Xingyin()   

  1. College of Plant Protection, Shandong Agricultural University, Taiʼan 271018, Shandong, China
  • Received:2021-06-26 Revised:2021-11-01 Online:2022-10-15 Published:2022-10-19

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Abstract:

Taking Denghai 605 as material, the effects of S-ABA soaking on corn seed germination and activity, and the effects of S-ABA seed dressing and spraying on corn growth under salt-alkali stress were studied. The result indicated: treatments with different concentrations of NaCl could inhibit the germination of corn seeds. Seed soaking with S-ABA could reduce the damage of salt stress to seeds. The best effect was obtained when the concentration of S-ABA was 6mg/L under the condition of 90mmol/L NaCl concentration, and the germination rate was as high as 95.00%. Compared with the control, the increase rate of α-amylase activity was 83.33%; under the conditions of greenhouse saline-alkali soil culture, S-ABA seed dressing and spraying treatment both could significantly improve the salt-alkali resistance of corn. The salt-alkali resistance of the treatment was the best when the S-ABA seed dressing concentration was 2.0mg/10kg and the S-ABA spraying concentration was 50mg/L. Compared with the control, each growth index was significantly improved. Through the combination of the two treatments, the salt-alkali resistance of maize had been further improved, and the effect was better than any single treatment in seed dressing or spraying.

Key words: Maize, Salt-alkali stress, S-ABA, Seed treatment, Physiological characteristics

Table 1

Effects of different concentrations of NaCl treatments on maize germination"

处理
Treatment		 发芽势
Germination
potential (%)		 发芽率
Germination
percentage (%)		 根长
Root length
(cm)		 芽长
Bud length
(cm)		 根鲜重
Root fresh
weight (g)		 芽鲜重
Bud fresh
weight (g)		 α-淀粉酶活性
α-amylase activity
[mg/(min·g)]
Y0 95.00±0.17a 96.67±0.38a 15.35±0.24a 7.83±0.15a 3.45±0.03a 2.34±0.05a 4.14±0.29a
Y1 80.00±0.42b 93.33±0.25a 9.84±0.20b 6.39±0.20b 3.06±0.03b 1.97±0.01b 3.31±0.11b
Y2 76.67±1.04b 90.00±0.13a 7.58±0.19c 4.61±0.13c 2.27±0.01c 1.47±0.04c 2.15±0.14c
Y3 48.33±0.50c 78.33±0.33b 4.25±0.41d 2.37±0.08d 1.23±0.01d 0.74±0.02d 1.83±0.11d
Y4 33.33±0.50d 71.67±0.22c 3.13±0.14e 1.21±0.18e 0.46±0.03e 0.36±0.04e 1.21±0.13e
Y5 20.00±0.42e 55.00±0.63d 2.01±0.16f 0.68±0.36f 0.41±0.03f 0.18±0.03f 0.85±0.07f

Table 2

Effects of different concentrations of S-ABA on maize germination"

处理
Treatment		 发芽势
Germination
potential (%)		 发芽率Germination
percentage (%)		 根长
Root length
(cm)		 芽长
Bud length
(cm)		 根鲜重
Root fresh
weight (g)		 芽鲜重
Bud fresh
weight (g)		 α-淀粉酶活性
α-amylase activity
[mg/(min·g)]
T0 93.33±0.38a 98.33±0.19a 15.13±0.18a 7.75±0.12a 3.56±0.02a 2.35±0.03a 4.06±0.11a
T1 46.67±0.20e 73.33±0.28d 3.83±0.10f 2.14±0.09f 1.19±0.02f 0.69±0.03f 1.74±0.23e
T2 58.33±0.21d 80.00±0.07c 4.42±0.05e 2.88±0.10e 1.62±0.02e 0.96±0.02e 2.06±0.11d
T3 63.33±0.20c 90.00±0.07b 5.10±0.06d 3.30±0.07d 1.92±0.01d 1.35±0.02d 2.53±0.21c
T4 73.33±0.28b 95.00±0.07a 6.52±0.08b 4.23±0.09b 2.53±0.02b 1.63±0.02b 3.19±0.17b
T5 66.67±0.15c 88.33±0.20b 5.97±0.14c 3.84±0.06c 2.22±0.02c 1.47±0.01c 2.92±0.14b

Table 3

The effect of S-ABA seed dressing treatment on maize seed germination and seedling growth"

处理
Treatment		 发芽势
Germination
potential (%)		 发芽率
Germination
percentage (%)		 株高
Plant height
(cm)		 根长
Root length
(cm)		 地上鲜重
Aboveground
fresh weight (g)		 地下鲜重
Underground
fresh weight (g)
S1 85.00±0.48a 98.33±0.29a 42.39±0.07a 43.47±0.17a 3.18±0.07a 5.08±0.04a
S2 26.67±0.44f 66.67±0.25d 32.27±0.16e 25.41±0.19f 2.08±0.12e 2.56±0.05e
S3 43.33±0.28e 83.33±0.18c 35.67±0.10d 27.81±0.06e 2.31±0.03d 2.62±0.03e
S4 51.67±0.23d 86.67±0.23bc 36.80±0.18c 29.67±0.17d 2.42±0.08d 2.99±0.08d
S5 61.67±0.21c 88.33±0.29bc 37.52±0.22c 33.52±0.10b 2.57±0.05c 3.25±0.03c
S6 70.00±0.09b 91.67±0.21b 40.45±0.32b 33.33±0.12b 2.87±0.02b 3.73±0.02b
S7 55.00±0.09d 86.67±0.23bc 37.32±0.07c 30.62±0.02c 2.80±0.05b 3.63±0.01b

Fig.1

The effects of S-ABA seed dressing treatment on maize seedling root vigor and chlorophyll content Different letters indicate significant difference at 0.05 level, the same below"

Fig.2

The effects of S-ABA seed dressing treatment on root vigor and chlorophyll content of maize seedlings"

Fig.3

The effects of spraying treatment with S-ABA on root vigor and chlorophyll content of maize seedlings"

Fig.4

The effects of spraying treatment with S-ABA on the antioxidant enzyme activity of maize seedlings"

Fig.5

The effects of seed dressing and spray mixing with S- ABA on root vigor and chlorophyll content of maize"

Fig.6

Effects of S-ABA seed dressing and spray treatment on the antioxidant enzyme activities of maize seedlings"

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