Method for quickly breeding directly seeded rice varieties suitable for wheat stubble along Huaihe region

A rice and wheat stubble technology, applied in the field of rapid breeding, can solve the problems of long period, production cost, and low efficiency of aggregating multiple target genes, and achieve the effect of reducing field workload and improving breeding efficiency

Inactive Publication Date: 2017-01-11
安徽省东昌农业科技有限公司
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Problems solved by technology

Due to the long period and low efficiency of using conventional hybridization methods t

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  • Method for quickly breeding directly seeded rice varieties suitable for wheat stubble along Huaihe region

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Embodiment 1

[0018] A rapid breeding method suitable for direct seeding rice varieties along the Huaihe River region, the specific steps of the rapid breeding method suitable for direct seeding rice varieties along the Huaihe region are as follows:

[0019] S1: Select rice stubble direct seeding rice varieties or materials with short sowing duration, richness, disease resistance, drought tolerance, high quality and other traits as parents, and carry out sowing date test and adaptability observation;

[0020] S2: Take the dominant male sterile line material as the female parent, cross with them respectively, and harvest F1;

[0021] S3: Plant F1 in a mixed manner, and isolate it from the surrounding rice, and mix and pollinate in the full flowering stage;

[0022] S4: Harvest the sterile plants in the above mixed population to obtain the first recurrent population, and remove the fertile plants;

[0023] S5: Isolate and plant the first round population, harvest fertile individual plants wi...

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Abstract

The invention discloses a method for quickly breeding directly seeded rice varieties suitable for wheat stubble along the Huaihe region. The quick breeding method comprises the following specific steps of: S1, testing in a seeding date and observing adaptability; S2, taking a dominant sterile material as a female parent and respectively hybridizing with rice varieties to gain F1; S3, implementing mixed planting of the F1 and isolating with surrounding rice, implementing mixed pressing and pollination of pollen in a full-blossom period; S4, implementing mixed harvesting of sterile plants in the mixed group; S5, isolating and planting a first cycle of groups; S6, isolating and planting a second cycle of groups; S7, screening out new directly seeded rice varieties aggregated with multiple traits; S8, finally selecting new target strains. In the quick breeding method, the dominant sterile material is used as a hybrid medium to quickly aggregate good genes, meanwhile a molecular marker-assisted breeding technique is applied to indoor filtration so that a non-target material can be quickly obsoleted, farm workload is greatly reduced and breeding efficiency is effectively increased.

Description

technical field [0001] The invention relates to the technical field of rice breeding, in particular to a rapid breeding method suitable for directly-seeding rice varieties with wheat stubble in the Huaihe River area. Background technique [0002] In recent years, labor shortage and lack of water resources have put forward new requirements for rice breeders suitable for light and simple cultivation. For this reason, breeding new direct-seeding rice varieties suitable for planting in the Jianghuai region, especially the Jianghuai watershed region, and taking this as an opportunity to vigorously promote dry direct-seeding of wheat stubble has important practical significance for solving labor shortages and saving water. Due to the long period and low efficiency of using conventional hybridization methods to aggregate multiple target genes, it takes many years of work before it is possible to pay the cost. Contents of the invention [0003] The purpose of the present inventio...

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 张德文张道田汪婉琳张伟王宗启于学奎黄建华
Owner 安徽省东昌农业科技有限公司
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