Wheat interspecific distant hybrid, secondary backcross and selfing breeding method

Abstract

The present invention provides a wheat breeding method, including interspecific distant hybridization, secondary back cross and self-cross. Said method includes the following several procedures: a), parents selection; b), distant hybridization; c), hybridization combination and fertility identification; d), backcross; and e) self-cross. Besides, said invention provides the concrete steps and requirements of the above-mentioned every procedure.

Description

technical field

[0001] The invention relates to a breeding method of distant hybridization, secondary backcrossing and self-crossing among wheat species to create germplasm with high thousand-grain weight of wheat, which belongs to the field of crop genetic breeding research. Background technique

[0002] Wheat intraspecific hybridization (or inter-variety hybridization) has achieved fruitful results in exploring yield potential, which has greatly promoted the progress of agricultural production. However, due to the fact that the utilization of genetic resources of wheat cultivars has become increasingly saturated in recent years, and many improved varieties have the same or similar parental sources, the narrow genetic background has led to the current level of wheat yield has been hovering. To further increase the yield potential of wheat, it is necessary to find new ways to create and utilize new materials and germplasm with rich variation, and to introduce beneficial exog...

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