Crops ›› 2021, Vol. 37 ›› Issue (6): 159-163.doi: 10.16035/j.issn.1001-7283.2021.06.025

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Effects of Two Plant Growth Regulators on Photosynthetic Characteristics and Yield of Proso Millet

Zhang Panpan1,2(), Zhang Hongpeng2, Guo Yaning1   

  1. 1College of Life Sciences, Yulin University, Yulin 719000, Shaanxi, China
    2College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
  • Received:2021-02-02 Revised:2021-02-18 Online:2021-12-15 Published:2021-12-16

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Abstract:

In order to explore the effects of chemical control technology on photosynthetic characteristics and yield of proso millet. Nianfeng 5 and Qishu 1 were used as materials in field, photosynthetic characteristics, dry matter accumulation, agronomic traits and yield components at different growth stages were determined by soaking seeds before sowing with 1mg/L uniotenazole (S3307), 50mg/L diethyl aminoethyl hexanoate (DTA-6), and clean water as the control (CK). The results showed that, compared with CK, S3307 and DTA-6 could increase SPAD value, stomatal conductance, transpiration rate and net photosynthetic rate at jointing stage and early filling stage, also increased the stem diameter at mature period, and decreased the plant height at mature period. S3307 could increase stem dry weight, leaf dry weight and panicle dry weight, while DTA-6 could only increase leaf dry weight and panicle dry weight of the two millet varieties at the peak of grain filling. S3307 increased grain number per panicle of two proso millet varieties, and the effective panicle number of Nianfeng 5, grain number per panicle and 1000-grain weight of Qishu 1 were increased by DTA-6. Yield of Nianfeng 5 were 11.05% and 5.43% higher than those of the CK under the treatments of S3307 and DTA-6, respectively, and yield of Qishu 1 were 5.73% and 16.24% higher than those of the CK. Therefore, S3307 could effectively improve yield of Nianfeng 5, and DTA-6 could effectively improve yield of Qishu 1.

Key words: Proso millet, Uniconazole, Diethyl aminoethyl hexanoatethe, Photosynthetic characteristics, Yield

Fig.1

Effects of presoaking with S3307 and DTA-6 on leaf photosynthetic characteristics of proso millet Different lowercase letters indicate significant difference at the 0.05 level, the same below"

Fig.2

Effects of presoaking with S3307 and DTA-6 on dry matter of proso millet"

Fig.3

Effects of presoaking with S3307 and DTA-6 on stem diameter and plant height of proso millet"

Table 1

Effects of presoaking with S3307 and DTA-6 on yield and its components of proso millet"

品种
Variety		 处理
Treatment		 有效穗数
Effective panicles (×104/hm2)		 穗粒数
Grain number per panicle		 千粒重
1000-grain weight (g)		 产量
Yield (kg/hm2)		 增产率
Yield increased rate (%)
粘丰5号 CK 71.28±4.94ab 742.93±33.92b 6.11±0.05a 3225.97±49.00c –
Nianfeng 5 S3307 68.21±7.59b 978.10±87.14a 5.41±0.01c 3582.30±71.48a 11.05
DTA-6 84.10±1.77a 681.97±9.37b 5.93±0.02b 3401.03±38.31b 5.43
齐黍1号 CK 79.49±3.88a 678.53±3.97c 6.32±0.02b 3410.26±160.12b –
Qishu 1 S3307 60.51±0.89b 937.63±10.82a 6.36±0.01b 3605.50±11.11b 5.73
DTA-6 74.36±2.35a 801.20±2.49b 6.65±0.04a 3964.10±142.94a 16.24
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