Responses of Maize Inbred Lines with Contrasting N Efficiency to Different Nitrogen Supplies

doi:10.3321/j.issn:1000-7091.2005.03.021

Abstract

Abstract: Two maize inbred lines (Zi330 and Chen94-11) which were significantly different in N efficiency were grown in solutions supplied with different nitrogen to study the differences in N uptake and utilization by maize plants. The results showed that dry weight of shoot, N content decreased for both Zi330 and Chen94-11 as the N supplying decreased, but dry weight of root and root/shoot ratio increased. Zi330 with a higher N efficiency than Chen94-11 had a great tolerance to low N stress. The dry weights of both shoot and root for Zi330 were higher than for Chen94-11 when they were in low N condition. The variation of N use efficiency for the two maize inbred lines was due to the difference in root biomass, rather than N concentration in root.

Key words: Maize inbred lines, Nitrogen use efficiency , Genotypic variation

CLC Number:

S513.062

LIU Ting-ting, FAN Ming-shou, LI Chun-jian. Responses of Maize Inbred Lines with Contrasting N Efficiency to Different Nitrogen Supplies[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(3): 83-86. doi: 10.3321/j.issn:1000-7091.2005.03.021.

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