[Population physiological indices on density-tolerance of maize in different plant type].
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.
Xue
Jiquan
J
Northwest Science & Technology, University of Agriculture and Forestry, Yangling 712100.
Liang
Zongsou
Z
Ma
Guosheng
G
Lu
Haidong
H
Ren
Jianhong
J
D018556:Crops, Agricultural; D017753:Ecosystem; D008027:Light; D010788:Photosynthesis; D003313:Zea mays / Q000502:physiology*