Method for producing ternary hybrid japonica rice with stable and high yield, high purity and high germination rate

A hybrid japonica rice, stable and high-yield technology, applied in the fields of botanical equipment and methods, rice cultivation, seed and rhizome treatment, etc., can solve the problem that the parental sowing date, row ratio and other technologies are not universal, and the implementation effect needs to be further verified, etc. problem, to achieve the effect of high germination rate

Inactive Publication Date: 2011-08-10
天津市农作物研究所
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Problems solved by technology

[0008] Chinese patent CN200910228819.2 discloses "Japonic Hybrid Rice Seed Production Method", which is mainly for the research of Japonica CMS line 17A and restorer line R141

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Embodiment Construction

[0012] The present invention will be further described below: the stable-yield, high-yield, high-purity, high-bud rate-one-stable and three-high seed production method of three-line hybrid japonica rice mainly includes the following steps: ① Select a suitable seed production base and build a scientific and advanced management system. The seed production base should select flat terrain and convenient contiguous land for irrigation and drainage. The seed production base must have an isolation distance of more than 500 meters, that is, there should be no other rice varieties except the male parent within the 500 meter range, and sufficient water source ( Especially in the Tianjin area). The seed production base not only requires supporting facilities such as storage and drying yards, but also adopts a scientific and advanced management system to ensure the normal operation of the base. ②Use high-purity parent: use high-purity male sterile line as the female parent for seed produc...

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Abstract

The invention relates to a method for producing ternary hybrid japonica rice with stable and high yield, high purity and high germination rate, which mainly comprises the following steps of: (1) selecting a proper seed production base; (2) selecting a high-purity sterile line to be used as a female parent for seed production; (3) selecting a proper sowing period and seedling transplanting period; (4) reasonably accelerating germination, and cultivating and strengthening seedlings: uniformly and thoroughly airing seeds before sowing, soaking the aired seeds in an agent, and sowing the seeds when the germination rate reaches about 60%; (5) choosing proper density and line ratio to ensure sufficient number of productive ear for the female parent; (7) applying effective flowering phase and flowering time adjustment technologies mainly including a fertilizer adjustment method and a gibberellic acid adjustment method; (8) enlarging the ear height difference between the male parent and the female parent by using gibberellic acid; (9) carrying out artificial supplementary pollination; and (10) effectively controlling pests and weeds, harvesting the rice at the right time, and carrying out fine processing to ensure that seeds with high purity and high germination rate are obtained.

Description

technical field [0001] The invention belongs to the technical field of seed production, in particular to the technical field of three-line hybrid japonica rice seed production. Background technique [0002] At present, my country has about 450 million mu of rice area, including about 130 million mu of japonica rice. Conventional japonica rice and hybrid japonica rice are the two main types of japonica rice production at present, of which conventional japonica rice accounts for about 96% of the total area of ​​japonica rice, while hybrid japonica rice only accounts for 4% of the total area of ​​japonica rice. The higher seed price of hybrid japonica rice compared with conventional japonica rice is one of the main factors limiting the demonstration and promotion of hybrid japonica rice. The reason for the high seed price of hybrid japonica rice is mainly due to the imperfect seed production technology of hybrid japonica rice, which is manifested in the low seed production and...

Claims

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Application Information

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IPC IPC(8): A01G16/00A01H1/02A01C1/00A01G22/22
Inventor 刘学军苏京平马忠友孙林静闫双勇王胜军
Owner 天津市农作物研究所
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