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Application of chitosan oligosaccharide and composition thereof in resisting intense light for crops

A composition and chitosan oligosaccharide technology, applied in the agricultural field, can solve problems such as adverse effects on fruit quality, reduced yield, and poor growth status, and achieve the effects of preventing strong light damage, reducing damage, and maintaining growth

Active Publication Date: 2012-08-01
HAINAN ZHENGYE ZHONGNONG HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Moreover, after the crops are subjected to strong light, the growth condition becomes poor, the yield decreases, and the quality of the harvested fruits is also adversely affected.

Method used

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  • Application of chitosan oligosaccharide and composition thereof in resisting intense light for crops

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Treatment of wheat by strong light:

[0028] Set 2 kinds of temperature: suitable temperature (25℃) and high temperature (35℃); 2 kinds of light intensity: medium light [PFD is 600umol / (m 2 ·S)] and strong light [PFD is 1600umol / (m 2 ·S)], the temperature and light intensity are combined according to the test requirements. 1600umol / (m 2 ·S) Strong light is provided with 1000W tungsten lamp. Place the tungsten lamp on an iron frame, and set a glass flowing water tank with a thickness of 10 cm between the tungsten lamp and the test material to avoid excessively high temperature under light. By adjusting the distance between the material and the light source, the light intensity received by the flag leaf (sampling part) can meet the design requirements.

[0029] In the same area, multiple plots were used to test the effect of the composition containing chitooligosaccharides on the strong light irradiation of wheat. The composition containing chitosan oligosaccharide is a chit...

Embodiment 2

[0045] Cucumbers, spinach, peanuts, tobacco, rice, corn, apples, pears, tea, citrus, cowpeas, cherry and grapes were processed in the same manner as in Example 1, and the growth status of the crops and the quality of the harvested objects were measured.

[0046] Take 35℃ and 1600umol / (m 2 ·S), spray 60ppm chitooligosaccharide solution twice in the treatment, observe the growth of rice 10 days after the second spraying, the rice plant height of sprayed chitooligosaccharide solution is higher than that of the water control on average 8.7%. After harvesting the rice, the total protein content in the rice was measured. The total protein content was also higher than that of the water treatment, 3.6% higher on average. It shows that the chitosan oligosaccharide solution can reduce the damage of strong light to rice.

[0047] Carry out corn at 25℃, 600umol / (m 2 ·S) treatment, using 50ppm chitosan oligosaccharide solution treatment once, showing that the growth of corn is better than that ...

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Abstract

The invention relates to an application of chitosan oligosaccharide and composition thereof in resisting intense light stress for crops, and particularly provides a farm chemical composition for crops to resist intense light. The farm chemical composition comprises the chitosan oligosaccharide, and the weight percentage of the chitosan oligosaccharide in farm chemical composition is 0.01 to 0.02 percent or 0.005 to 0.015 percent. The chitosan oligosaccharide composition is applied before crops suffer from the stress of intense light or after the crops suffer from the stress of the intense light, so not only can the crops be prevented from being damaged by the intense light, but also the damage of the intense light on the crops can be reduced.

Description

Technical field [0001] The invention relates to the field of agriculture, and more specifically to the application of oligochitosan in crops such as food crops, vegetables, fruit trees, etc., in resisting strong light stress. Background technique [0002] Light is the energy for plant photosynthesis and is an essential factor for plant growth. However, in the main wheat producing areas north of the Huaihe River in Qinling Mountains, the temperature during the grain filling period of wheat is abnormally high, and accompanied by strong light, it causes double stress on wheat. As a result, the photosynthetic mechanism is abnormal, the transmission of photosynthetic electrons is blocked, and even irreversible photo-oxidation and photo-damage are caused. Under high temperature and strong light, plants produce a large amount of O through Mehler reaction - 2 Convert to H 2 O 2 , O 1 2 Various active oxygen species with strong oxidizing properties. At this time, if SOD and APX and other...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01P21/00A01G7/06
Inventor 张善学侯华民陆红霞陈丁丁王会民
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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