Rice stem base dwarfing control gene, protein, mutant gene, mutant and application thereof

Abstract

The invention discloses application of a rice stem base dwarfing control gene and protein, the gene has a gene sequence shown as Seq ID No: 1, and the application is as follows: (1) application in regulating and controlling rice plant height; (2) application in lodging resistance of rice; and (3) application in regulation and control of rice yield. The invention also discloses a rice stem base dwarfing control mutant gene, which is a gene with 11 basic groups deleted from the 5269th site to the 5279th site in the gene sequence as shown in Seq ID No: 1, and the rice stem base dwarfing control mutant gene is a mutant gene with 11 basic groups deleted from the 5269th site to the 5279th site in the gene sequence as shown in Seq ID No: 1. The invention also discloses application of the mutant gene and a biological material containing the mutant gene. In addition, the invention also discloses application of the rice stem base dwarfing control mutant, which is mainly applied in a crossbreeding mode. The stalk base dwarfing control gene, the protein, the mutant gene and the mutant can be used for reducing the plant height of rice and improving the lodging resistance and the yield of the rice. Especially, rice with SD1 but still too high plant height can be improved, and the method has important application value in rice breeding.

Description

technical field [0001] The invention relates to the field of plant genetic engineering, in particular to a rice stem base dwarf control gene, protein, mutant gene, mutant and application thereof. Background technique [0002] Rice is one of the most important food crops in the world. Cultivating lodging-resistant rice is a powerful guarantee for achieving high and stable rice yield, and cultivating dwarf rice is an effective means of rice lodging resistance. Therefore, dwarfing rice has been proved to be an ideal way to solve the contradiction between high-yield and lodging. At present, rice production mainly relies on the green revolution gene SD1 and its alleles, and the rice dwarf source is relatively simple. In addition, it has been found in rice practice that even if the hybrid rice contains the homozygous SD1 gene, the plant height of some hybrid rice combinations is too high, and the weight of the ear is heavy, resulting in rice lodging and yield reduction. Therefor...

AI Technical Summary

Problems solved by technology

At present, rice production mainly relies on the green revolution gene SD1 and its alleles, and the source of rice dwarfism is relatively single

In addition, in rice practice, it is found that even if the hybrid rice contains homozygous SD1 gene, the plant height of some hybrid rice combinations is too high, and the weight of the panicle is heavy, resulting in lodging and yield reduction of the rice.

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