Unlock instant, AI-driven research and patent intelligence for your innovation.

Application of paclobutrazol and its analogs in wheat lodging resistance

A technology of paclobutrazol and the like is applied in the field of crop cultivation and can solve the problems of unfavorable crop rotation, long residual time, potential safety hazards and the like

Active Publication Date: 2020-07-24
SHANDONG AGRICULTURAL UNIVERSITY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although paclobutrazol is widely used in agriculture, its hazards are also very prominent, such as: 1) Paclobutrazol has a strong inhibitory effect, and excessive dosage or repeated use in a short period of time will cause excessive inhibition; 2) The residual time on dry land is long, and different plants are sensitive to paclobutrazol Different, soil residues have potential safety hazards and are not conducive to crop rotation; 3) The inhibitory effect is positively correlated with the metering, and multiple sprays are required to maintain the efficacy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Application of paclobutrazol and its analogs in wheat lodging resistance
  • Application of paclobutrazol and its analogs in wheat lodging resistance
  • Application of paclobutrazol and its analogs in wheat lodging resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: N-(1-(4-(furan-2-yl)phenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl) Synthesis of -pentan-3-yl)benzamide

[0030] 1. 1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)-pentane-3-primary amine hydrochloride Synthesis of (Intermediate 1)

[0031]

[0032] 1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)-pentane-3-ol (100mmol) was added to 200ml In toluene, stir until completely dissolved, cool down to 0-5°C, add triphenylphosphine (120mmol) and succinimide (120mmol) to the system, drop diethyl azodicarboxylate (100mmol) in toluene After the solution was added dropwise, keep the temperature and stir for 1h, then return to room temperature and continue to stir for 6h. Remove toluene under reduced pressure, add 250g water to the residue, heat up to reflux, then cool down to 60-65°C, add 10g concentrated hydrochloric acid, then heat up to reflux, stir for 1h, cool down to 80-90°C, add 400ml toluene, and heat up to Reflux, keep reflux for 1h, th...

Embodiment 2

[0044] Example 2: N-(1-(4-(furan-2-yl)phenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl) Synthesis of -pentan-3-yl)-2-methoxybenzamide

[0045]

[0046] 1-(4-(furan-2-yl)phenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)-pentane-3- The primary amine (intermediate 3) (100mmol) was dissolved in 150ml of dichloromethane, cooled to -5°C, and kept at the temperature, 2-methoxybenzoyl chloride (102mmol) was added dropwise to the reaction, and then N,N -Diisopropylethylamine (105mmol), warming up to room temperature, stirred for 10h, after the reaction was completed, concentrated under reduced pressure to remove the organic solvent, the residual solid was beaten with ethanol for 50 minutes, and suction filtered to obtain off-white solid N-(1- (4-(furan-2-yl)phenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)-pentane-3-yl)- 2-methoxybenzamide, 42.0 g, yield: 91.5%. LC-MS (ESI, pos, ion) m / z: 459[M+H].

Embodiment 3

[0047] Example 3: N-(1-(4-(furan-2-yl)phenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl) Synthesis of -pentan-3-yl) p-methoxybenzamide

[0048]

[0049] 1-(4-(furan-2-yl)phenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)-pentane-3- The primary amine (intermediate 3) (100mmol) was dissolved in 150ml of dichloromethane, cooled to -5°C, and kept at the temperature, p-methoxybenzoyl chloride (102mmol) was added dropwise to the reaction, and then N,N- Diisopropylethylamine (105mmol), warming up to room temperature, stirred and reacted for 10h, after the reaction was completed, concentrated under reduced pressure to remove the organic solvent, the residual solid was beaten with ethanol for 50 minutes, and suction filtered to obtain off-white solid N-(1-( 4-(furan-2-yl)phenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)-pentane-3-yl)p-methyl Oxybenzamide, 40.8g, yield: 89%. LC-MS (ESI, pos, ion) m / z: 459[M+H].

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses application of paclobutrazol and analogue thereof in lodging resistance of wheat. Experiments prove that the combination of paclobutrazol and analogue thereof can shorten the length of a stalk first section and second section, has good dwarfing effect, and is of important significance for the lodging resistance of wheat. The paclobutrazol and analogue thereof can reduce thedosage of paclobutrazol and ensure the inhibition effect on stalks, and single application can achieve a long-term inhibition effect. The dosage of paclobutrazol is lowered fundamentally, and the adverse effect of overinhibition and soil residue on crop rotation can be avoided.

Description

technical field [0001] The invention belongs to the technical field of crop cultivation, and relates to the application of paclobutrazol and its analogs in wheat lodging resistance. [0002] technical background [0003] Lodging is one of the main limiting factors affecting wheat yield and poses a serious threat to the realization of high yield and high efficiency of wheat. Paclobutrazol is a gibberellin biosynthesis inhibitor that can delay plant growth, reduce longitudinal elongation, and shorten internodes, thereby preventing lodging. Paclobutrazol has been widely used in wheat cultivation. [0004] Although paclobutrazol is widely used in agriculture, its hazards are also very prominent, such as: 1) Paclobutrazol has a strong inhibitory effect, and excessive dosage or repeated use in a short period of time will cause excessive inhibition; 2) The residual time on dry land is long, and different plants are sensitive to paclobutrazol Different, soil residues have potential...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07D405/10A01N43/653A01P21/00
CPCA01N43/653C07D405/10
Inventor 李勇骆永丽金敏李文倩庞党伟常永兰王元元王振林
Owner SHANDONG AGRICULTURAL UNIVERSITY