Diversity Analysis of Stalk Traits in Maize Inbred Lines in China
Author:
Affiliation:

1.Plant Science and Technology, Beijing University of Agriculture;2.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences

Clc Number:

Fund Project:

National Natural Science Foundation Projrcet(31671706);Beijing Educational Committee Project(KM201810020005);Education Development and Innovation Project of BUA(2019YJS007)

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    To study stalk characteristics and diversity of different main groups on maize in China is an important step for harvesting maize by mechanical means. In this study, seventy common maize inbred lines, derived from five groups of Lancaster, PB, Sipingtou, Lüda Red Cob and Reid respectively, were using to investigate their stalk-related traits, i.e. stem height (SH), ear height (EH), ear position coefficient (EPC), stem node number (SN), ear node (EN), ear node coefficient (ENC), internode length of ear (IL), internode diameter of ear (ID), stem fresh weight (FW), stem dry weight (DW), brix and moisture content (MC). A higher phenotypic variation existed in Sipingtou and Lüda Red Cob group, both of which are the local germplasms in China. At the filling stage, the moisture content of maize stalk became stable. A significant correlation in maize plant height and internode length was observed, while the number of internodes between ear and tassel was relatively constant. The sugar content of maize stalk was correlated to the length of internode, the diameter of stem and the location of ear. It’s more effective through lowering ear locating node to reduce ear height. Furthermore, maize stalk exists distint characteristics among different groups. For examples, Lancaster group has less stem node, Reid group has greater internode diameter while PB group has less one, Lüda Red Cob group has greater internode diameter and less internode length, Sipingtou group has shorter stem, less brix and dry weight. There has strong heterosis of biomass and grain yield in Lancaster × Sipingtou and Lancaster × PB. It’s an alternative strategy of mechanization breeding utilizing China local germplasm with the longer internode and the lower ear node. These results could provide important reference for maize breeding.

    Reference
    Related
    Cited by
Get Citation
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:June 27,2019
  • Revised:February 10,2020
  • Adopted:August 06,2019
  • Online: March 17,2020
  • Published:
You are the th visitor 京ICP备09069690号-23
® 2024 All Rights Reserved
Supported by:Beijing E-Tiller Technology Development Co., Ltd.