Crops ›› 2020, Vol. 36 ›› Issue (5): 148-153.doi: 10.16035/j.issn.1001-7283.2020.05.022

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Effects of DTA-6 on Physiological Metabolism and Yield of Two Edible Legumes

Ding Kaixin1(), Shan Ying1, Feng Naijie1,2(), Zheng Dianfeng1,2, Liang Xilong1, Wu Qiong1, Huang Wenting1   

  1. 1College of Agriculture, Heilongjiang Bayi Agriculture University, Daqing 163319, Heilongjiang, China
    2College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China
  • Received:2020-03-16 Revised:2020-05-27 Online:2020-10-15 Published:2020-10-12
  • Contact: Feng Naijie E-mail:584039625@qq.com;byndfnj@126.com

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Abstract:

To investigate the regulation of 2-N, N-diethyl aminoethylhexanoate (DTA-6) on the physiological metabolism and yield of edible legumes, common bean (British red) and adzuki bean (Longken No.2) were used as the test materials. DTA-6 was sprayed on the leaf surface of common bean and adzuki bean during the first flowering stage, using the field random test method. With water as a control (CK) to determine the photosynthetic parameters, carbon metabolites, dry matter, yield and yield components. The results showed that: DTA-6 increased the SPAD of the two edible legumes at each growth stage, as well as the net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs), and intercellular CO2 concentration (Ci) during the flowering and seed-filling periods, significantly increased the content of sucrose and soluble sugar in the leaves and promoted the accumulation of starch content in the leaves; compared with CK, DTA-6 increased the accumulation of dry matter per plant aboveground of two edible legumes, and significantly increased the pod allocation rate of common bean and adzuki bean at the seed-filling stage. DTA-6 could effectively control the number of pods per plant, seed number per plant and 100-grain weight of two edible legumes, thereby increasing the yield. The yield of common bean and adzuki bean treated with DTA-6 significantly increased by 13.30% and 12.91% respectively compared with CK.

Key words: DTA-6, Common bean, Adzuki bean, Physiological metabolism, Yield

Table 1

Effects of DTA-6 on photosynthetic parameters of two edible legumes"

作物Crop 生育时期Growth stage 处理Treatment Pn [μmol/(m2·s)] Gs [mol/(m2·s)] Tr [mmol/(m2·s)] Ci (μmol/mmol)
芸豆Common bean 盛花期Flowering CK 4.93±0.01b 77.18±12.88b 2.25±0.07b 228.77±0.01b
DTA-6 6.00±0.16a 115.69±0.01a 2.49±0.15a 262.12±0.01a
鼓粒期Seed-filling CK 11.23±0.01b 320.14±1.57b 5.62±0.02b 292.71±0.04b
DTA-6 12.57±0.02a 531.50±0.84a 7.32±0.01a 302.56±0.04a
小豆Adzuki bean 盛花期Flowering CK 5.31±0.01b 44.22±0.03b 1.00±0.01b 159.57±2.69a
DTA-6 5.89±0.03a 47.53±0.68a 1.02±0.01a 169.03±0.40a
鼓粒期Seed-filling CK 11.50±0.93b 387.30±9.73b 5.75±0.13b 284.12±0.21b
DTA-6 14.60±0.28a 453.06±19.48a 6.89±0.23a 314.57±0.06a

Fig.1

Effects of DTA-6 on SPAD value of two edible legumes Different lowercase letters indicate significant difference at 0.05 level, the same below"

Fig.2

Effects of DTA-6 on sucrose contents of two edible legumes"

Fig.3

Effects of DTA-6 on starch contents of two edible legumes"

Fig.4

Effects of DTA-6 on soluble sugar contents of two edible legumes"

Fig.5

Effects of DTA-6 on dry matter accumulation per plant of two edible legumes"

Table 2

Effects of DTA-6 on organ distribution rate of two edible legumes %"

作物
Crop		 生育时期
Growth stage		 处理
Treatment		 叶分配率
The proportion of leaf		 茎分配率
The proportion of stem		 荚分配率
The proportion of pod
芸豆Common bean 盛花期Flowering CK 42.61±0.65b 57.39±0.65a -
DTA-6 44.03±1.29a 55.97±1.29a -
盛荚期Podding CK 36.58±1.50a 45.63±1.05b 17.79±1.57a
DTA-6 33.09±1.57a 51.01±1.04a 15.89±1.62a
鼓粒期Seed-filling CK 25.30±0.64a 37.57±0.48a 37.12±0.33b
DTA-6 17.39±0.86b 33.24±0.73b 49.37±1.17a
小豆Adzuki bean 盛花期Flowering CK 30.92±0.95b 62.37±0.62b -
DTA-6 35.20±0.66a 68.03±2.00a -
盛荚期Podding CK 26.27±1.66a 65.92±1.36a 8.80±0.40a
DTA-6 28.19±0.99a 65.36±0.25a 6.21±0.43b
鼓粒期Seed-filling CK 26.61±0.27a 59.46±1.74a 20.35±0.11b
DTA-6 20.42±0.25a 56.20±1.72a 26.18±1.12a

Table 3

Effects of DTA-6 on yields and yield components of two edible legumes"

作物
Crop		 处理
Treatment		 单株荚数
Pod number
per plant		 单株粒数
Seed number
per plant		 单株粒重
Seed weight
per plant (g)		 百粒重
100-seed
weight (g)		 产量
Yield
(kg/hm2)		 增产率
Yield
increased (%)
芸豆Common bean CK 4.90±0.14a 16.45±0.16b 7.18±0.29b 41.40±0.54b 1 460.53±30.46b -
DTA-6 5.19±0.16a 17.63±0.22a 8.85±0.30a 43.78±0.37a 1 654.71±21.20a 13.30
小豆Adzuki bean CK 12.67±0.33b 74.67±0.33b 12.49±0.18b 14.40±0.16b 2 304.62±28.71b -
DTA-6 13.00±0.58a 77.67±0.33a 13.46±0.34a 15.63±0.38a 2 602.22±69.37a 12.91
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