Crops ›› 2017, Vol. 33 ›› Issue (4): 63-66.doi: 10.16035/j.issn.1001-7283.2017.04.011

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Effects of Saline-Alkali Stress on Millet Germination and Shoots Growth and Saline-Alkali Tolerance Variety Screening

Guo Ruifeng,Zhang Yongfu,Ren Yuemei,Yang Zhong   

  1. Crops Research Institute in Severe Cold Region,Shanxi Academy of Agricultural Sciences,Datong 037008,Shanxi,China
  • Received:2017-03-30 Revised:2017-05-12 Online:2017-08-15 Published:2018-08-26
  • Contact: Yongfu Zhang

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Abstract:

This study explored millet germination, buds growth under saline-alkali stress and preliminary screened salt tolerant materials, aiming at providing material basis for saline-alkali tolerance mechanism study and breeding new millet varieties for saline-alkali tolerance. The results showed that under saline-alkali stress the germination rate of millet seed decreased significantly, bud length, root length, germination index, vigor index decreased significantly with increasing stress concentration. And there was a great difference among varieties. It was concluded that the suitable identification concentration for salt and alkali tolerance by millet in germination period was 60-100mmol/L. In 20 millet material, we preliminary screened 6 resistant varieties, 8 sensitive materials, 3 highly sensitive materials. 9324-8-3 had the highest degree of saline alkali tolerance and its saline alkali index was 22.38%.

Key words: Millet, Shoot, Saline-alkali stress, Saline-alkali tolerance variety

Table 1

Standard of salt/alkali resistance in germination stage of millet"

级别
Grade		 盐碱害指数(%)
Saline alkali damage index		 耐盐/碱级别
Salt/alkali resistance grade
1 0~20.0 高耐(HT)
2 20.1~40.0 耐(T)
3 40.1~60.0 中耐(MT)
4 60.1~80.0 敏感(S)
5 80.1~100.0 高敏(HS)

Table 2

Germination index of millet under different concentrations of saline alkali stress"

品种
Variety		 盐碱浓度(mmol/L)
Saline alkali concentration		 发芽率(%)
Germination percentage		 芽长(cm)
Shoot length		 根长(cm)
Root length		 发芽指数
Germination index		 活力指数
Vitality index
大同29号 0 99.33Aa 3.61A 4.55A 20.99Aa 4.62Aa
Datong 29 20 94.00Aab 4.43A 4.88A 19.00Aa 3.99Aa
40 92.00Aab 3.57A 4.51A 20.39Aa 4.28Aa
60 78.00ABb 1.94B 0.55B 14.42Bb 2.16Bb
80 56.00BCc 1.53B 0.25B 10.41BCc 1.25Cc
100 41.33Cc 1.42BC 0.19B 07.49Cc 0.90CDc
120 14.00Dd 1.20CD 0.05B 02.02Dd 0.10Dd
150 04.00Dd 0.00D 0.00B 00.75Dd 0.00Dd
200 00.00Dd 0.00D 0.00B 00.00Dd 0.00Dd
250 00.00Dd 0.00D 0.00B 00.00Dd 0.00Dd
大同34号 0 74.67Aa 3.70A 5.98A 13.00Aa 2.21Aa
Datong 34 20 67.33ABab 3.63A 3.29B 11.65Aab 1.98Aa
40 62.00Bbc 3.48A 2.24C 11.08Aab 1.55Bb
60 56.00Bc 1.90B 0.63D 10.79Ab 1.51Bb
80 23.33Cd 0.60C 0.14D 03.88Bc 0.31Cc
100 17.33Cd 0.42CD 0.15D 02.19BCcd 0.15Ccd
120 02.67De 0.00D 0.00D 00.61Cde 0.00Cd
150 02.67De 0.00D 0.00D 00.28Cde 0.00Cd
200 00.00De 0.00D 0.00D 00.00Ce 0.00Cd
250 00.00De 0.00D 0.00D 00.00Ce 0.00Cd

Table 3

Shoot length and root length of different millet cultivars under 80mmol/L saline alkali stress"

序号
Order		 品种
Varieties		 相对芽长(%)
Relative shoot
length		 相对根长(%)
Relative root
length		 相对发芽率(%)
Relative germination
percentage		 盐碱害指数(%)
Saline alkali
damage index		 耐盐碱级别
Saline alkali
tolerance grade		 耐盐碱类型
Saline alkali
tolerance type
1 大同34号 16.22 4.68 32.34 67.66 4 敏感
2 大同29号 42.38 10.98 55.72 44.28 3 中耐
3 大同32号 20.46 5.12 37.75 62.25 4 敏感
4 大同25号 11.25 4.10 23.38 76.62 4 敏感
5 大同30号 10.91 3.13 17.77 82.23 5 高敏
6 8311 44.89 12.15 56.74 43.26 3 中耐
7 大白谷 9.60 2.86 16.84 83.16 5 高敏
8 晋谷39号 30.24 9.37 49.83 50.17 3 中耐
9 晋谷31号 48.96 13.16 58.75 41.25 3 中耐
10 晋谷23号 60.57 16.33 69.22 30.78 2 耐
11 肥选3号 17.92 4.90 34.65 65.35 4 敏感
12 大同36号 38.77 9.96 54.74 45.26 3 中耐
13 东风3号 26.34 6.52 39.83 60.17 3 敏感
14 9324-8-3 76.52 20.92 77.62 22.38 2 耐
15 毛良谷 13.07 4.50 27.65 72.35 4 敏感
16 坝谷214 64.72 18.94 72.35 27.65 2 耐
17 九根齐 8.23 2.51 14.08 85.92 5 高敏
18 92-早1 18.10 5.04 35.48 64.52 4 敏感
19 内406 12.38 4.28 26.07 73.93 4 敏感
20 鸡蛋黄 27.52 7.34 45.73 54.27 3 中耐
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