Production method of hybrid rice

A production method and technology of hybrid rice, applied in rice cultivation, botany equipment and methods, plant genetic improvement, etc., can solve the problems of high seed production cost, hinder production enthusiasm of production companies and investment in scientific research, and achieve high yield and adaptability broad effect

Inactive Publication Date: 2010-12-22
BEIJING KINGS NOWER SEED S&T
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AI Technical Summary

Problems solved by technology

The three-line method is used to produce rice seeds, because the cost of seed production is too hig

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: The specific breeding process of hybrid Guangliangyou 96 of the present invention

[0018] Guangliangyou 96 was bred by crossing the two-line CMS Guangzhan 63-4S and R96. R96 was bred by continuous self-selection of a single plant for 6 generations from the inbred line with good plant shape among the mutants of medium indica WH26. CMS line Guangzhan 63-4S is an external introduction line.

[0019] This hybrid combination participated in the medium-indica preliminary test in Henan Province in 2008, with an average yield of 556.9 kg per mu, which was 7.1% higher than that of the control II You 838, and will continue to test in the next year.

Embodiment 2

[0020] Embodiment 2: the production technology of hybrid Guangliangyou 96 of the present invention

[0021] (1) Safety isolation: Seed production isolation for other rice varieties with a spatial distance > 500 meters or an interval of more than 15 days between heading and flowering.

[0022] (2) Timely sowing: the male parent is inserted 25-30 days earlier than the female parent in the first phase, or the leaf order difference is 6.5-7.5 leaves, or the effective accumulated temperature difference between the parents is about 205°C (May 20-25 for the female parent in central Jiangsu Day sowing, the first phase of the male parent is planted around April 24), the second and third phases are separated from the previous phase by about 7 days, or the two phases of the male parent are separated by 12 days.

[0023] (3) Reasonable dense planting and suitable row ratio: the distance between plants and rows of the female parent is 16.7×10 cm, and 150,000 to 180,000 basic seedlings are ...

Embodiment 3

[0027] Example 3 Cultivation and Applied Technology of Hybrid Guangliangyou 96

[0028] (1) Timely sowing: Sowing in Henan area on May 8, the seedling age is 30-40 days, and the sowing rate in the seedling field is 1.0-1.5 kg / mu.

[0029] (2) Transplanting density and group requirements: for a season of mid-season rice cultivation, generally 26.7×13.3 cm is appropriate, the basic seedlings are 80,000 to 100,000, the number of stems and tillers reaches the predetermined number of spikes 15 days after planting, and the peak number of seedlings is less than 30 days after planting. More than 270,000, the final spikes are 180,000-200,000, the total spikelets per mu are 36-40 million, the seed setting rate is over 82%, and the thousand-grain weight is over 24 grams.

[0030] (3) Fertilizer planning: 15 kg of pure nitrogen is used in total. In principle, the basal fertilizer should be sufficient, and the amount of fertilization in the early stage accounts for about 75% of the total n...

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Abstract

The invention belongs to the field of heterosis utilization, in particular relates to a production method of hybrid rice. The hybrid rice of the invention is two-line medium-indica hybrid rice which is crossbred by matching two-line sterile-line Guangzhan 63-4s and a restorer line R96, a female parent Guangzhan 63-4s is a high-yield high-quality high-resistance two-line sterile line, and a male parent R96 is bred by a selective variant in medium indica WH26. The hybrid rice has the advantages of high yield, stable yield, strong disease resistance, high biological yield, and the like.

Description

technical field [0001] The invention relates to a production method of hybrid rice, in particular to a method for cultivating a new hybrid rice combination using a two-line method. Background technique [0002] China is a big rice country, and its rice breeding technology has always been in a leading position in the world. However, due to the growth of China's population, the problem of feeding the growing population is still the most important problem that my country's agriculture needs to solve. The three-line method is used to produce rice seeds, because the cost of seed production is too high, which hinders the production enthusiasm and scientific research investment of production companies. The two-line seed production has greatly reduced the production cost and greatly promoted the production enthusiasm of the production company. At present, the two-line varieties "Liangyou Peijiu" and "Yangliangyou No. 6" mainly promoted in the southern rice areas have good rice qual...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04A01G13/00A01G16/00A01G22/22
Inventor 鲁梦海李辉
Owner BEIJING KINGS NOWER SEED S&T
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