Effects of Planting Density on Photosynthetic Characteristics and Grain Yield of a Wheat Cultivar Shixin828

doi:10.7668/hbnxb.2010.01.033

Abstract

Abstract: A field experiment was conducted to evaluate photosynthetic characteristics and grain yield in different planting densities of a winter wheat cultivar Shixin828 with sowing suitable late.It was studied under four different density levels;The photosynthetic characteristicsts were measured using CI-340 portable photosynthesis system and FMS-2 fluorescence monitoring system.The results indicated that the dsnsity can remarkably influence the Photosynthesis characteristies of flag leaf and yield level.The 330×10⁴ basis seedlings per ha treatment had apparent advantages in chlorophyll content,photosynthesis rate,PSⅡpotential activity(Fv/Fo)and the maximal quantum efficiency of PSⅡphotochemistry(Fv/Fm)of the flag leaf at late growth period and the grain yield of it was higher than that of the others significantly.The 210×10⁴ and 270×10⁴ basis seedlings per ha treatments represent franfibility for gently drought as a result of less colony and the 330×10⁴ basis seedlings per ha treatment influence individual growth with close microclimate as a result of great colony,both above reducing yield.The highest grain yield was observed in the treatment with 330×10⁴ basis seedlings per ha applied.

Key words: wheat, Planting density, Photosynthetic characteristics, Grain yield

CLC Number:

S12.01

BI Chang-rui1,BAI Zhi-ying1,LI Cun-dong2,ZHENG Jin-feng1,TANG Guang-lei2. Effects of Planting Density on Photosynthetic Characteristics and Grain Yield of a Wheat Cultivar Shixin828[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(1): 165-169. doi: 10.7668/hbnxb.2010.01.033.

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http://www.hbnxb.net/EN/Y2010/V25/I1/165

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