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Method for producing hybrid rice seeds of light-temperature sensitive male sterility line by use higher temperature or long-dayhigh temperature

A technology of photothermo-sensitive sterile lines and male sterile lines, which is applied in the field of breeding and can solve the problems of low yield and instability in seed production

Inactive Publication Date: 2007-10-03
HUNAN HYBRID RICE RES CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is proposed and completed on the basis of solving the above-mentioned problems of low yield and unstable seed production of high-temperature or long-day high-temperature sterile rice photothermo-sensitive male sterile lines

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1 Seed Production by Hybridization of High-temperature Sterile Thermosensitive CMS Line Che 64S and Male Parent 9311

[0068] Female parent: Ce 64S (Chinese patent, ZL94107289.4; Hunan Agricultural Science, 1993.1: 10-11), a high-temperature sterile thermosensitive male sterile line selected for the Hunan Hybrid Rice Research Center and certified by the Hunan Provincial Science and Technology Commission. The starting temperature of 64S sterility is about 23°C.

[0069] Male parent: The male parent 9311 is commonly used in hybrid rice seed production, and the male parent of the two-line hybrid rice combination Liangyoupeijiu (National Approved Rice 2001001; Journal of Jiangsu Agricultural Science, 2000, 16(4): 193-196) is widely used in production.

[0070] Determine the seed production base. Choose a large-scale paddy field under large and medium-sized reservoirs in Changsha, with sufficient sunlight, few pests and diseases, fertile soil, and convenient transpo...

Embodiment 2

[0084] Example 2 Seed production by crossing the long-day high-temperature sterile type photothermo-sensitive genic male sterile line Pei'ai 64S with the male parent 9311

[0085] Female parent: Peiai 64S (Announcement No. CNA1999000.9 for the Protection of New Varieties of Agricultural Plants; Hybrid Rice, 2000, 15(2): 4-5), which was selected and bred by Hunan Hybrid Rice Research Center and passed the identification of Hunan Provincial Science and Technology Commission. The applied high-temperature sterile photothermo-sensitive male sterile line. The starting temperature of Pei'ai 64S sterility is about 24℃.

[0086]Male parent: The male parent 9311 is commonly used in hybrid rice seed production, and the male parent of the two-line hybrid rice combination Liangyoupeijiu (GuoShenDao 2001001; Jiangsu Agricultural Journal, 2000, 16(4): 193-196) is widely used in production.

[0087] Determine the seed production base. Choose a large and narrow paddy field under Changsha's l...

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PUM

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Abstract

A method for culturing the seeds of photosensitive and thermo-sensitive male sterility line of high-temp sterile or long-day high-temp sterile rice includes such steps as choosing male parent and female parent (photosensitive and thermo-sensitive sterility line), sowing, irrigating with cold water when the ambient temp is higher than the critical temp of fertility transform, hybridizing, growing and harvesting.

Description

technical field [0001] The present invention relates to the field of breeding, in particular, to a method for producing seeds of a high temperature or long day high temperature sterile rice photothermosensitive male sterile line. Background technique [0002] At present, there are various forms of photothermo-sensitive sterile lines, such as high-temperature sterility or long-day high-temperature sterility, low-temperature sterility or short-day low-temperature sterility. High-temperature or long-day high-temperature sterile (low-temperature or short-day low-temperature fertile) type photothermo-sensitive sterile line is male fertile or partially fertile when exposed to a certain degree and time of low temperature during the sensitive period of fertility conversion; Male sterility. In the existing high-temperature sterile or long-day high-temperature sterile PTS lines, temperature is the key factor controlling the expression of fertility, and no pure PTS lines have been fou...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01G16/00A01G22/22
Inventor 李新奇赵昌平袁隆平张利伟
Owner HUNAN HYBRID RICE RES CENT
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