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GB/T 21127-2007 PDF English

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GB/T 21127-2007: Technical specification of identification and evaluation for drought resistance in wheat
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Basic data

Standard ID GB/T 21127-2007 (GB/T21127-2007)
Description (Translated English) Technical specification of identification and evaluation for drought resistance in wheat
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard B05
Classification of International Standard 65.020.20
Word Count Estimation 8,825
Date of Issue 2007-10-16
Date of Implementation 2008-05-01
Regulation (derived from) China National Standard Approval Announcement2007 No.11 (Total No.111)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the wheat drought resistance identification methods and decision rules. This standard applies to detect drought resistance of wheat.

GB/T 21127-2007: Technical specification of identification and evaluation for drought resistance in wheat




---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical specification of identification and evaluation for drought resistance in wheat ICS 65.020.20 B05 National Standards of People's Republic of China Technical Specification of Wheat Drought Resistance Identification and Evaluation 2007-10-16 released 2008-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard proposed by the People's Republic of China Ministry of Agriculture. This standard was drafted. Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Ministry of Agriculture crop variety resources supervision and test center. The main drafters of this standard. Jing Rui Lian, Hu Ronghai, Zhang Canjun, Zhu Zhihua, Chang Xiaoping, Wang Juanling. Technical Specification of Wheat Drought Resistance Identification and Evaluation

1 Scope

This standard specifies the wheat drought resistance identification methods and rules. This standard applies to wheat drought resistance testing.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. All dated references, which are subsequently owned Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to reach an agreement based on this standard research Whether you can use the latest versions of these files. For undated references, the latest version applies to this standard. GB/T 3543.4 crop seed testing procedures sprout test

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 The same type of dryland regional control test varieties. 3.2 The drought-resistant wheat varieties identified by the state are used to calibrate the standard varieties of non-identical materials tested for identification. 3.3 Survival after two droughts in the proportion of the total number of seedlings. 3.4 Based on the grain yield, taking the control variety as the comparative standard, the index of drought resistance of the tested material was determined. Drought resistance identification Drought tolerance identification period is divided into. seed germination, seedling stage, the critical period of water and the whole growth period. According to the purpose of research work selected Ren The determination of a period of the test results to determine the resistance of the material. 4.1 Seed germination drought resistance identification Seed germination drought resistance identification with hypertonic solution method. That is, with -0.5MPa polyethylene glycol-6000 (PEG-6000) aqueous solution of species Seed treatment of water stress, non-ionic water culture as a control. Sprouting dish is long × width × height = 10cm × 10cm × 5cm plastic Box, a single layer of filter paper for the bed. "" "" Always "" "" "" "" "" "" "" "" "" "" " The sample material to be tested after thorough mixing, take 800 randomly. 4.1.2 Stress solution preparation 192 g of polyethylene glycol-6000 (PEG-6000) was dissolved in 1000 mL of deionized water, ie -0.5 MPa PEG-6000 water Solution. ...

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