Crops ›› 2017, Vol. 33 ›› Issue (4): 169-172.doi: 10.16035/j.issn.1001-7283.2017.04.029

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Effects of Exogenous Nitric Oxide on Seed Germination and Seedling Growth of Sunflower

Wang Wenhao,Zheng Hongyuan,Liu Wenjun,He Lifen,Yan Yuxing   

  1. Industrial Crop Institute,Shanxi Academy of Agricultural Sciences,Fenyang 032200,Shanxi,China
  • Received:2017-03-16 Revised:2017-06-02 Online:2017-08-15 Published:2018-08-26
  • Contact: Hongyuan Zheng

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Abstract:

The effects of different concentrations of SNP (sodium nitroprusside, NO donor) on the germination potential, germination rate, germination index, seed simple vigor index and seedling height, root length of sunflower were studied in the experiment. The results showed that low concentration of SNP (0.01-0.50mmol/L) could promote the seed germination and seedling growth of sunflower, and the effect of 0.5mmol/L SNP promote the indexes reached significant level. High concentration of SNP (1.00mmol/L) showed some inhibitory effect and the inhibitory effect on germination rate was signifficant.

Key words: Nitric oxide (NO), Sunflower, Sodium nitroprusside (SNP), Seed germination, Seedling growth

Table 1

Effects of different concentrations of SNP on seed germination energy and germination rate of sunflower"

SNP浓度(mmol/L)
SNP concentration		 发芽势(%)
Germination energy		 发芽率(%)
Germination rate
CK 57.33±6.57c 78.00±2.00b
0.01 58.00±2.31c 78.67±3.71ab
0.05 64.00±6.11bc 83.33±3.53ab
0.10 78.00±2.00ab 86.67±1.76ab
0.50 81.33±6.36a 88.67±3.53a
1.00 53.33±5.46c 64.00±4.16c

Fig.1

Effects of different treatment on seed germination index of sunflowerDifferent letters above the bars indicate significantly different between treatments at 0.05 level, the same below"

Fig.2

Effects of different treatment on seed simple vigor index of sunflower"

Fig.3

Effects of different treatment on seedling height and root length of sunflower"

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