Effect of Planting Density on Fluorescence Induction Kinetic Parameters and Yield of Winter Wheat under Late-sowing

doi:10.7668/hbnxb.2013.S1.034

Abstract

Abstract: In order to definite a reasonable population composition of late}owing winter wheat we selected Jimai 22 as field experimental material , and studied the effect of planting density on fluorescence induction kinetic parameters and yield of late}owing winter wheat. The results indicated that the treatments of planting density of 300×104一420×104 /ha could improve photosynthetic function of late}owing wheat and increased maximum photosynthetic rate, initial slope and the minimum half}aturated light intensity. The maximum photochemical efficiency (Fv /Fm),the PS, potential activity(Fv/Fo),actual photochemical efficiency of PS (BPS II),photo chemical quenching coefficient (qP) and non photo chemical quenching coefficient (qN) were higher of flag leaves and grain yield were higher in treatments of planting density of 300一420 104 /ha. In result the reasonable planting density could improve photosynthetic function of late}owing wheat and increase grain yield.

Key words: Winter wheat, Planting density, Late-sowing winter wheat, Fluorescence induction kinetic parameters, Grain yield

CLC Number:

S512.01

ZHANG Yao-lan, CAO Cheng-fu, LI Hua-wei, QIAO Yu-qiang, ZHAO Zhu, DU Shi-zhou. Effect of Planting Density on Fluorescence Induction Kinetic Parameters and Yield of Winter Wheat under Late-sowing[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(S1): 184-187. doi: 10.7668/hbnxb.2013.S1.034.

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