Related Experiment Videos
[Population physiological indices on density-tolerance of maize in different plant type]
Jiquan Xue1, Zongsou Liang, Guosheng Ma
1Northwest Science & Technology, University of Agriculture and Forestry, Yangling 712100.
Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|April 19, 2002
Summary
Maize density-tolerance varies by plant type, influenced by light distribution and productivity. Light distribution, leaf area index (LAI), net assimilation rate (NAR), and crop growth rate (CGR) kinetics are key indicators.
Area of Science:
- Agronomy
- Plant Physiology
- Crop Science
Context:
- Investigates density-tolerance in two distinct maize (Zea mays L.) plant types: compact-type and flat-type.
- Utilizes crop growth analysis to examine relationships between plant density and key agricultural metrics.
Purpose:
- To identify the primary factors determining density-tolerance in different maize varieties.
- To establish reliable indices for assessing maize crop performance under varying densities.
Summary:
- Light distribution within the maize canopy emerged as the principal factor for assessing density-tolerance.
- Kinetic patterns of Leaf Area Index (LAI), Net Assimilation Rate (NAR), and Crop Growth Rate (CGR) provide fundamental insights into density-tolerance.
- The interplay between population sink-source dynamics offers a comprehensive metric for evaluating density-tolerance across maize types.
Impact:
- Provides a scientific basis for optimizing maize planting densities to enhance yield.
- Offers practical tools for breeders and agronomists to select and cultivate maize varieties with superior density-tolerance.
- Contributes to sustainable agricultural intensification through improved crop management strategies.