Method for breeding rice hybrid Y Liangyou 087

A hybrid and rice technology, applied in the fields of botanical equipment and methods, applications, and plant genetic improvement, can solve the problems of late start of research on super hybrid rice breeding, slow progress in breeding, and lack of resources for super rice varieties.

Inactive Publication Date: 2014-01-22
GUANGXI HENGMAO AGRO TECH
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AI Technical Summary

Problems solved by technology

[0002] The research on the breeding of super hybrid rice in Guangxi started late, and due to the limitations of planting resources, research conditions an

Method used

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Embodiment 1

[0012] Embodiment 1: The specific breeding process of rice hybrid Y Liangyou 087 of the present invention

[0013] Y Liangyou 087 was bred by crossing the two-line male sterile line Y588 as the female parent and the restorer line R087 as the male parent. The two-line male sterile line Y58S was introduced by the National Hybrid Rice Engineering Technology Research Center. The hybrid of 1012 / Fuhui 838 was selected according to the pedigree method and self-selected after 8 generations.

Embodiment 2

[0014] Embodiment 2: Key points of production technology of rice hybrid Y Liangyou 087 of the present invention

[0015] (1) Safety isolation: the space safety distance with other non-hybrid seeds of the present invention for seed production rice is greater than 500 meters, or the parents are pollinated and isolated at the heading and flowering stage at a time interval of more than 15 days.

[0016] (2) Scientifically arrange the fertility sensitive period of the female parent to ensure that the female parent of the seed production is completely sterile: the critical temperature of the fertility conversion of the female parent two-line male sterile line Y588 is 23°C, and Guangxi can arrange North Guangxi Middle Rice and Guangxi Central Guinan Seed production of late rice. According to local meteorological data, different regions scientifically arrange the time of sowing and transplanting for seed production to meet the temperature required for the sensitive period of Y58S fert...

Embodiment 3

[0024] Embodiment 3: the cultivation technique of rice hybrid Y Liangyou 087

[0025] (1) Early sowing at the right time to cultivate strong seedlings of the right age: Southern Guangxi early rice is sown from late February to early March, central Guangxi is from early to mid-March, and northern Guangxi is sown from late March. The sowing rate is 1 kg / mu, and 750 kg / mu of farmyard manure is applied to the rice seedlings. When sowing seedlings, sow them sparsely and evenly, and cover the seedlings for seedling cultivation. When the seedlings have 1.5 to 2.0 leaves, spray with 15% paclobutrazol 30 grams per mu and water to promote short and strong seedlings. Pay attention to uncovering the film for ventilation and training seedlings.

[0026] (2) Appropriate sparse planting, reasonable basic seedlings: under high fertilizer conditions, the planting density of early rice is 23 cm × 20 cm or 26 cm × 16.5 cm, and the planting density of single-crop rice is 26 cm × 20 cm. , about 1...

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Abstract

The invention provides a method for breeding a rice hybrid Y Liangyou 087. In the method, a breeding restorer, a safe space for hybrid breeding, time and space intervals, different seeding periods for breeding parental species, the seeding amount, an appropriate rice seedling row ratio, pest control, a gibberellin spraying technique, an impurity removing, rouging and purifying technique are adopted in the breeding process, an excellent two-line sterile line Y58S is taken as a female parent, and a self-fertile excellent restorer R087 is taken as a male parent in rice hybridization so as to breed the rice hybrid Y Liangyou 087. Rice which is good in leaf form, excellent, high in yield, appropriate in breeding period, wide in applicability and high in stress resistance can be planted from the hybrid, and moreover, the planted rice is good in quality, high in yield, high in nutrition value and applicable to popularization and planting, and the food demand of people can be well met.

Description

technical field [0001] The invention relates to a method for breeding hybrid rice, which is a method for breeding a new combination of hybrid rice using the rice two-line method. Background technique [0002] The research on the breeding of super hybrid rice in Guangxi started late, and due to the limitations of planting resources, research conditions and complex ecological zones, the progress of breeding was slow. The resources of super rice varieties planted in the ecological zone are relatively scarce. For this reason, breeding super hybrid rice suitable for planting in various rice-growing areas of Guangxi and meeting the demand of the rice market is of great significance to promote the steady growth of rice production in Guangxi and ensure local food security. Contents of the invention [0003] The purpose of the present invention is to use the theory of hybrid vigor, according to the ecological characteristics of Guangxi, collect excellent restorer lines from differ...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 李永青邹永红李伟荣刘永宏黄春毓韦庆元刘伟定周玉明谭建林
Owner GUANGXI HENGMAO AGRO TECH
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