外源分泌蛋白调控雄穗分枝数发育的研究进展

he tassel is an important reproductive organ of maize, which plays an important role in the process of growth and development and is closely related to yield. There was competition between tassel and ear in nutrient consumption, and excessive tassel would consume a lot of nutrients, resulting in reduced yield.The smaller tassel is beneficial to improve the light transmittance of the lower leaves, enhance the absorption of nutrients, and improve the yield of maize. Tassel branch number (TBN) is a typical quantitative trait that is easily affected by genetic background and environmental conditions. TBN is an important indicator for measuring the size of tassels and is an important target for maize plant type breeding. Secreted proteins regulate the amount of energy used for the development of reproductive organs and the size of shoot apical meristem, further affecting the number of TBNs. This paper reviews tassel development, tassel heredity and metabolic network regulating tassel development. Especially the latest progress of secreted protein on meristem development and TBN regulation, in order to provide guidance for the genetic research of maize TBN and serve for maize TBN molecular breeding.