title: [Population physiological indices on density-tolerance of maize in different plant type].
abstract: Taken maize in two plant types of compact-type and flat-type as research object, the relationships between density-tolerance and light distribution in population, indices of productivity(LAI, NAR, and CGR), and population sink-source were studied synthetically by means of crop growth analysis method. The results showed that light distribution in population was the chief index to measure density-tolerance of different maize varieties. The kinetic rules of LAI, NAR, and CGR were the basic feature reflecting density-tolerance. The correspondent relationship in population sink-source was a comprehensive index to appraise density-tolerance of different maize varieties.
authors.affiliation: Northwest Science & Technology, University of Agriculture and Forestry, Yangling 712100.
authors.forename: Jiquan
authors.initials: J
authors.lastname: Xue
authors.forename: Zongsou
authors.initials: Z
authors.lastname: Liang
authors.forename: Guosheng
authors.initials: G
authors.lastname: Ma
authors.forename: Haidong
authors.initials: H
authors.lastname: Lu
authors.forename: Jianhong
authors.initials: J
authors.lastname: Ren
mesh_terms: D018556:Crops, Agricultural; D017753:Ecosystem; D008027:Light; D010788:Photosynthesis; D003313:Zea mays / Q000502:physiology*