GB/T 29371.4-2012Technical rules for seed producing system of two-line hybrid rice - Part 4: Technical rules for F1 seed production (English PDF)
两系杂交水稻种子生产体系技术规范 第4部分：杂交制种技术规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 31, 2012
Implementation date
July 1, 2013
Scope
GB/T 29371.4-2012 is the English-translated version of 两系杂交水稻种子生产体系技术规范 第4部分：杂交制种技术规范.
GB/T 29371.4-2012 is the Chinese standard "Technical rules for seed producing system of two-line hybrid rice - Part 4: Technical rules for F1 seed production".
Its scope clause reads: This section GB/T 29371 specifies the temperature sterility rice CMS line and japonica sensitive sterile line seed production base requirements, seed season Festival and flowering arrangements, the parents of the group structure and planting seedlings, transplanting, fertilizing, the parents of the prediction and regulation of flowering, and outcrossing situation improved, people Workers pollination, pest control, female fertility control, seed purity determine, cleaning, harvesting, drying and other hybrid seed technology and Field Investigation Report Upload content and methods.
This section applies to the use of high-temperature rice seed sterility type CMS line and japonica type photosensitive male sterile lines. Its clauses include seed base requirements.
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Document preview — GB/T 29371.4-2012
National Standard of the People's Republic of China
- ICS
- 65.020.20
- Classification
- B 21
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 seed base requirements
- 3.1 Production Base Fertility Sensitive rhythm requirements
- 3.3 Production Base Requirements
- 3.4 Seed isolation requirements
1 Scope
This section GB/T 29371 specifies the temperature sterility rice CMS line and japonica sensitive sterile line seed production base requirements, seed season
Festival and flowering arrangements, the parents of the group structure and planting seedlings, transplanting, fertilizing, the parents of the prediction and regulation of flowering, and outcrossing situation improved, people
Workers pollination, pest control, female fertility control, seed purity determine, cleaning, harvesting, drying and other hybrid seed technology and Field Investigation Report
Upload content and methods.
This section applies to the use of high-temperature rice seed sterility type CMS line and japonica type photosensitive male sterile lines.
2 Normative references
The following documents for the application of this document is essential, dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 29371.1-2012 hybrid rice seed production systems Technical specifications - Part 1. Terminology
GB/T 29371.3 hybrid rice seed production systems Technical specification - Part 3. sterile line field with the technical specifications breeder
3 seed base requirements
3.1 Production Base Fertility Sensitive rhythm requirements
Daily average temperature data collection target seed production bases of its own meteorological observations since the simultaneous analysis of the base in anticipation seed fertility sensitive stage
Within the day long, according to GB/T 29371.1-2012 2.11 in the method used to calculate the seed sterile line in this base made possible fertility Min
A sense of safety factor of fertility, according to producers fertility risk tolerance, choose the safety factor Fertility Fertility rhythm of 0.95 to 1,
Fertility rhythm should >=20d.
Weather Safety Requirements 3.2 Seed heading and flowering stage
Chances from the start to pollinate the end of the spike - heading >=3d consecutive day rainfall weather <=5%, daily average temperature of 24 °C ~
28 °C, the daily maximum temperature <=35 °C, minimum temperature >=21 °C, relative humidity of 75% to 90%.
3.3 Production Base Requirements
Production Base of paddy requirements concentrated, fertility levels, the irrigation and drainage convenient, Hanlaobaoshou avoid mountain shade and cold soak Tian Tian seed, fertility
Sensitive sterile line of irrigation water temperature should be higher than the threshold temperature above 1 °C.
No domestic same family of plants quarantine.
3.4 Seed isolation requirements
Isolation system of farming plains pitch >=100m (indica) or >=500m (japonica), or non-male rice and seed planting zone of separation
Maternal before heading difference >=25d, or hills, woods, village houses as a barrier isolation, or planting seed in the quarantine area paternal.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 18 pages — is available in the English PDF.
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Related Standards
GB/T 29371.1-2012 — Technical rules for seed producing system of two-line hybrid rice - Part 1: Terminology
GB/T 29371.2-2012 — Technical rules for seed producing system of two-line hybrid rice - Part 2: Technical rules for foundation seed production of photo/thermo-sensitive genic male sterile line
GB/T 29371.3-2012 — Technical rules for seed producing system of two-line hybrid rice - Part 3: Technical rules for seed multiplication of photo/thermo-sensitive genic male sterile line
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GB/T 29371.4-2012
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