The Effects of Density on Population Structure of Maize with Different Plant Types

doi:10.7668/hbnxb.2008.01.033

Abstract

Abstract: The angles between stem and leaf was correlated with the plant type properties in maize,and increasedwith the plant type being changed to erecting.At later growth stage,the leaf area index(LAI)under different densities intested cultivars showed to be the highest in GY115,then in ND108,and the lowest in ZD958. ZD958,the cultivar witherecting plant type,had relativly low senescent rate in the lower leaves. The photon perception amount at mid2part andlower part of population were decreased obviously in one day,but that in ZD958 was significant higher than ND108,andthe latter was also significant higher than GY115. The dry weight per plant was decreased also with the increase of densi2ty,but the decrease percentage showed to be the lowest in ZD958,then in ND108 and the highest in GY115. It was foundthat the yields in different plant type cultivars had different responses to densities,and the suitable densities for the high2est yield changed a lot with the plant types.

Key words: Maize, Plant type, Density, Population structure, Photo distribution in population, Y ield traits

CLC Number:

S513.01

GUO Jiang, GUO Xin-yu, GUO Cheng-jin, ZHANG Feng-lu, ZHAO Chun-jiang, XIAO Kai. The Effects of Density on Population Structure of Maize with Different Plant Types[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(1): 149-153. doi: 10.7668/hbnxb.2008.01.033.

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