Lifeng Wang , Juan Ma , Hao Wang , Yanyong Cao , Jingjin Li , Tengjiao Jia , Jiwei Yang , Huiyong Li

Cereal Crop Research Institute, Henan Academy of Agricultural Science, Zhengzhou, 450002, P.R. China
Author    Correspondence author
Maize Genomics and Genetics, 2022, Vol. 13, No. 3   doi: 10.5376/mgg.2022.13.0003
Received: 13 Dec., 2022    Accepted: 18 Dec., 2022    Published: 29 Dec., 2022

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Wang L.F., Ma J., Wang H., Cao Y.Y., Li J.J., Jia T.J., Yang J.W., and Li H.Y., 2022, Effects of different growth regulators on agronomic characters and grain yield of maize varieties, Maize Genomics and Genetics, 13(3):1-9 (doi: 10.5376/mgg.2022.13.0003)

Reasonable application of plant growth regulators can effectively improve population resistance, yield and quality of maize varieties. In this study, three different types of corn varieties were used, two plant growth regulators ("Baochai" and "Lingzhisu") were sprayed at the jointing stage (8-leaf stage) to analyze the effects of different regulators on the main agronomic characters and yield of maize. The effects of different treatments on the main agronomic traits and yield of maize varieties were analyzed. The results showed that plant growth regulator "Baochai" could optimize plant type, increase lodging resistance, and "Lingzhisu" could increase ear setting, seed setting rate and yield. In terms of maize varieties per se, Zhengdan 7137 and Zhengdan 7153 had excellent yield performance, especially Zhengdan 7137 had the lowest seed water content and had a better potential for mechanized harvesting. Through the supporting implementation of plant growth regulators, this study explored the possibility to optimize the population plant type and improve the comprehensive resistance, so as to give full play to the yield increasing potential of excellent varieties and finally achieve high and stable yield.

Plant growth regulator; Maize; Varieties; Agronomic traits; Yield