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New method for improving drought resistance of brassica napus

A technology of drought resistance and a new method, applied to the field of agricultural cultivation, can solve problems such as difficulty in obtaining a drought resistance effect, and achieve the effects of improving drought resistance, improving drought resistance and low cost.

Inactive Publication Date: 2018-06-29
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single seed treatment or growth regulator is difficult to achieve the desired effect of drought resistance

Method used

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  • New method for improving drought resistance of brassica napus
  • New method for improving drought resistance of brassica napus
  • New method for improving drought resistance of brassica napus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Pure Brassica napus seeds were selected and treated with a low-temperature plasma processor. The treatment parameters were as follows: the treatment power was 300 W, the treatment time was 15 s, the treatment pressure was 150 Pa, and the distance between the plates was 4 cm. After the low-temperature plasma treatment, the seeds were placed in an incubator at 25°C to accelerate germination, and the seeds were sown in pots after the seeds turned white. Apply 0.12 g / kg urea, 0.12 g / kg potassium chloride, 0.34 g / kg superphosphate and 6 mg / kg borax to the soil. When the seedlings grew to the five-leaf one-heart stage (40 days after sowing), the drought stress treatment was carried out. After the treatment, the drought-resistant agent mixture (5-aminolevulinic acid 50 mg / L, hydrogen concentration 0.05mmol / L of hydrogen-rich water, boric acid 1 g / L, Tween-80 0.1%) 25 ml, and the roots were perfused with 25 ml of drought-resistant agent mixture.

[0016] Through low-temperatu...

Embodiment 2

[0020] Pure Brassica napus seeds were selected and treated with a low-temperature plasma processor. The treatment parameters were as follows: the treatment power was 350 W, the treatment time was 60 s, the treatment pressure was 100 Pa, and the distance between the plates was 2 cm. After the low-temperature plasma treatment, the seeds were placed in an incubator at 25°C to accelerate germination, and the seeds were sown in pots after the seeds turned white. Apply 0.12 g / kg urea, 0.12 g / kg potassium chloride, 0.34 g / kg superphosphate and 6 mg / kg borax to the soil. When the seedlings grow to the five-leaf one-heart stage (40 days after sowing), the drought stress treatment is carried out. After the treatment, the drought-resistant agent mixture (5-aminolevulinic acid 75 mg / L, hydrogen concentration 0.1 mmol / L of hydrogen-rich water, boric acid 2 g / L, Tween-80 0.2%) 25 ml, and at the same time, the roots were perfused with 25 ml of drought-resistant agent mixture.

[0021] Thro...

Embodiment 3

[0025] Pure Brassica napus seeds were selected and treated with a low-temperature plasma processor. The treatment parameters were as follows: the treatment power was 450 W, the treatment time was 90 s, the treatment pressure was 50 Pa, and the distance between the plates was 3 cm. After the low-temperature plasma treatment, the seeds were placed in an incubator at 25°C to accelerate germination, and the seeds were sown in pots after the seeds turned white. Apply 0.12 g / kg urea, 0.12 g / kg potassium chloride, 0.34 g / kg superphosphate and 6 mg / kg borax to the soil. When the seedlings grew to the five-leaf one-heart stage (40 days after sowing), the drought stress treatment was carried out. After the treatment, the drought-resistant agent mixture (including 5-aminolevulinic acid 100 mg / L, hydrogen concentration of 0.2 mmol / L of hydrogen-rich water, boric acid 3 g / L, Tween-80 0.3%) 25 ml, and at the same time, the roots were perfused with 25 ml of drought-resistant agent mixture. ...

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Abstract

The invention relates to a new method for improving the drought resistance of brassica napus. Before sowing, dielectric barrier helium low temperature plasma treatment is conducted on brassica napus seeds, and the treatment conditions include: power 300-450 W, time 30-90 s, pressure intensity 50-150 Pa and pole plate spacing 2 cm; foliage spraying is conducted on drought-stressed brassica napus seedlings, a drought-resisting agent is irrigated to roots, and the drought-resistant agent component comprises 5-aminolevulinic acid 50-100 mg / L, hydrogen-rich water (hydrogen concentration of 0.05-0.2mmol / L), boric acid 1-3 g / L and tween-80 0.1%-0.3%. The method can significantly improve the drought resistance of the brassica napus. Under drought stress, by adopting the method, the stem diametersof the seedlings are increased by 14%-22%, leaf thickness is increased by 16%-22%, the dry weight of overground parts is increased by 14%-28%, the dry weight of underground parts is increased by 14%-24%, the root activity is increased by 17%-21%, the net photosynthetic rate is increased by 17%-24%, the N content of leaves is increased by 17%-22%, and the SOD activity of the leaves is increased by16%-36%. The method is low in cost, simple and easy to operate, safe and environmentally friendly, and can alleviate the damage caused by drought stress on the brassica napus seedlings and significantly improve the drought resistance of the brassica napus seedlings.

Description

technical field [0001] The invention relates to the field of agricultural cultivation, in particular to a new method for improving the drought resistance of rapeseed. Background technique [0002] rape( Brassica napus L.) is the largest oil crop in my country, with annual planting area and total output accounting for 1 / 3 of the world. The Yangtze River Basin is the main rapeseed production area in my country. Due to its geographical location, ecological environment and climate, seasonal droughts occur frequently in winter and spring, seriously affecting rapeseed production. Drought has become a bottleneck restricting rapeseed production in my country. Drought causes rapeseed plants to be weak, net photosynthetic efficiency, root activity and fertilizer absorption capacity are reduced, and biomass is significantly reduced, which eventually leads to a significant reduction in yield and oil content. In addition, drought will also lead to a reduction in rapeseed planting area....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/15A01C1/00A01N59/14A01N59/00A01N37/44A01P21/00
CPCA01C1/00A01N37/44A01N59/00A01N59/14
Inventor 李玲董元华刘建秀
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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