Biotechnology Bulletin ›› 2018, Vol. 34 ›› Issue (11): 22-26.doi: 10.13560/j.cnki.biotech.bull.1985.2018-0444

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Research Progress on Maize Dwarf Genes

WANG Wen-xiu, WANG Lei   

  1. Biotechnology Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081
  • Received:2018-05-14 Online:2018-11-26 Published:2018-11-28

Abstract: Corn has become the largest crop in China by planting area,and increasing the planting density is a key approach for improving maize yield. The plant type of corn has become one of the most critical researches on maize genetic breeding. Reasonable plant shape and lodging resistance is important trait affecting the corn yield,and is one of the important indexes for evaluating maize varieties. Molecular markers corresponding to dwarf genes can be developed through isolation and cloning of them,by which the dwarf or semi-dwarf corn plant may be cultivated;subsequently,the plant shape is improved,then the planting density can be increased,the photosynthetic efficiency of population is improved,and finally yield increases. Here we reviewed and summarized corn dwarf breeding,the genetic characteristics of corn dwarf genes,the phenotype of corn dwarf genes,and the effects of hormones on the corn dwarf,aiming at providing new clues for the application of dwarf gene and the expounding of molecular mechanisms.

Key words: corn, dwarf genes, mutants, yield, hormone