Verification method for saline-alkaline resistance of paddy rice

An identification method, a salt-alkali-resistant technology, applied in horticultural methods, botanical equipment and methods, seed and rhizome treatment, etc., can solve problems such as adverse effects on crop growth, damage to soil structure, and agricultural production hazards, and achieve reliable identification results , simple operation, easy operation effect

Inactive Publication Date: 2017-05-10
YANGTZE UNIVERSITY
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  • Description
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AI Technical Summary

Problems solved by technology

[0003] Generally, when the soil salt content is 0.2% to 0.5%, it will have an adverse effect on the growth of crops, and when it reaches 0.6% to 10%, it will seriously damage plants, destroy the soil structure, and bring serious harm to agricultural production.

Method used

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  • Verification method for saline-alkaline resistance of paddy rice
  • Verification method for saline-alkaline resistance of paddy rice
  • Verification method for saline-alkaline resistance of paddy rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Test object: Haidao 86

[0035] "Sea Rice 86" is a new rice variety that can be irrigated with seawater, discovered by experts from Chen Risheng and bred after years of targeted selection. It was announced by the Ministry of Agriculture in September 2014 for the protection of new plant varieties. In this example, the salinity and alkalinity tolerance of sea rice 86 was identified through the germination characteristics of sea rice 86, and the salt tolerance threshold of the variety was further clarified, in order to provide a basis for the later research, development and utilization of rice germplasm resources.

[0036] 2. Test method:

[0037] 2.1 Preparation of saline solution

[0038] Using neutral salt (NaCl) and basic salt (NaCl) respectively 2 CO 3 ) to prepare the salt and alkali solution of the mass concentration gradient; the salt solution is provided with 8 gradient salt concentrations (see Table 1), and the alkali solution is provided with 8 gradient al...

Embodiment 2

[0069] 1. Subject: Huang Huazhan

[0070] 2. Test method: The treatment method is the same as in Example 1, the difference is that Huanghuazhan is a variety that is not tolerant to saline-alkali, so it is not suitable to design a saline-alkali cross test.

[0071] 3. Test results and data processing: See Table 8 for Huang Huazhan's germination potential, germination rate, germination index, seedling height, relative salt tolerance rate, grade and salt tolerance in neutral salt solution; See Table 9 for the germination potential, germination rate, germination index, seedling height, relative alkali damage rate, grade and alkali resistance in the alkaline salt solution.

[0072] Table 8 Huang Huazhan treatment results in neutral saline solution

[0073]

[0074] Table 9 Huang Huazhan treatment results in alkaline salt solution

[0075]

[0076]

[0077] It can be seen from Table 8 that under neutral salt stress, the germination potential of Huanghuazhan decreased sign...

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Abstract

The invention discloses a verification method for saline-alkaline resistance of paddy rice. The verification method comprises the following steps: (1) preparing a saline-alkaline solution; (2) carrying out seed germination treatment; (3) observing and recording a germination result; (4) computing a result, and comparing a computing result with a relative saline/alkaline damage rate grading standard table, thus verifying the strength of the saline-alkaline resistance of the paddy rice. According to the verification method disclosed by the invention, the saline-alkaline resistance of paddy rice varieties can be verified, so that basis is provided for later research as well as development and utilization of seed quality resources of the paddy rice; the verification method is simple and easy in operation, the verification result is reliable, and the standard is high.

Description

technical field [0001] The invention relates to the technical field of exploring the salt-alkaline tolerance of crops, and more specifically, relates to an identification method for rice salt-alkali tolerance. Background technique [0002] The damage caused by excessive soil salinity to crops is called salt damage; the salinity of salt stress mainly includes NaCl, Na 2 SO 4 、Na 2 CO 3 , NaHCO 3 , NaCl and Na 2 SO 4 When it is dominant, it is called saline soil, Na 2 CO 3 and NaHCO 3 When it is dominant, it is called alkaline soil. Usually, these kinds of salts exist at the same time, which is called saline-alkali soil. Soil salinization is a worldwide environmental problem. About 20% of the arable land and 50% of the crop land in the world are under salt stress, accounting for 6% of the earth's land surface, and the area of ​​saline-alkali land is about 1 billion hm 2 . The area of ​​saline-alkali land in my country is nearly 100 million hm 2 , mainly distributed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C1/00A01G7/00
Inventor 王晓玲赵记伍田文涛
Owner YANGTZE UNIVERSITY
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