Crops ›› 2017, Vol. 33 ›› Issue (4): 113-116.doi: 10.16035/j.issn.1001-7283.2017.04.019

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Effects of Spraying Uniconazole on Agronomic Traits and Lodging Rate of Sweet Sorghum

Zhang Wei,Zhang Yang,Zhao Weijun,Shao Rongfeng,Bu Huahu,Chang Yuhui,Li Jinmei,Wang Huayun   

  1. Sorghum Institute,Shanxi Academy of Agricultural Sciences,Jinzhong 030600,Shanxi,China
  • Received:2017-03-22 Revised:2017-06-06 Online:2017-08-15 Published:2018-08-26

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Abstract:

The cultivar Jintianza3 was used as materials and uniconazole solvent of 600mg/L, 800mg/L, 1 000mg/L were used when the plant height of sweet sorghum was 40cm, 80cm, 120cm, respectively. Results showed that the sweet sorghum was effectively dwarfing by spraying uniconazole solvent , the strongest dwarfing effect was showed when the plant height was 80cm and 120cm and the concentration of the uniconazole solven was 600mg/L, 800mg/L. The stem diameter increased positively compared with the control and reaching the largest diameter by using 800mg/L,1 000mg/L uniconazole solvent when the plant height was 80cm, 120cm. There was no significant influence on the stalk yield among all the treatments. Lodging rate decreased significantly by 75.40%, 83.02% respectively compared with control by spraying 800mg/L and 1 000mg/L of uniconazole solvent when plant height was 120cm. Therefore, the yield of sweet sorghum showed no significant difference with control and lodging resistance increased when the plant height was 120cm and concentration was 800mg/L, implying it had the guiding significance for using uniconazole to regulate the growth of sweet sorghum.

Key words: Sweet sorghum, Uniconazole, Lodging rate, Agronomic traits, Stalk Yield

Fig.1

Effects of different uniconazole concentration on the plant height of sweet sorghumValues followed by different lowercase letters or uppercase letters in figure are significantly different among different treatments at 5% or 1% level, the same below"

Fig.2

Effects of different spray date on theplant height of sweet sorghum"

Fig.3

Effects of different spray date on the stem diameter of sweet sorghum"

Fig.4

Effects of different uniconazole concentration on the stem diameter of sweet sorghum"

Table 1

The influence of different treatments on plant height, brix and stem fresh yield of sweet sorghum"

处理浓度
Uniconazole concentrations		 处理时期
Spraying date		 倒伏率±标准差(%)
Lodging rate±SD		 锤度±标准差(Brix)
Brix±SD		 鲜茎秆产量±标准差(t/hm2)
Stem fresh yield±SD
CK - 29.48±2.14aA 17.97±1.57cBC 90.28±1.51cdefBCDE
600mg/L S1 29.64±0.89aA 21.30±0.52aA 106.61±4.30aA
S2 22.56±1.06bcCD 17.85±1.41cBC 94.64±7.73bcdBCD
S3 19.98±1.95cD 17.67±1.23cBCD 95.21±2.88bcdBCD
800mg/L S1 27.77±2.41aAB 19.22±1.37bB 99.58±2.48abAB
S2 10.54±1.43eE 15.21±1.48eE 82.71±3.46fE
S3 7.25±1.62fgEF 16.92±1.34cdCD 88.23±1.42defCDE
1 000mg/L S1 24.17±1.15bBC 18.07±1.83bcBC 91.69±2.90bcdeBCDE
S2 9.50±1.40efE 13.20±1.55fF 86.67±7.76efDE
S3 5.00±0.44gF 16.15±1.54deDE 98.18±6.20bcABC
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