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Table 1 Agronomic and N traits of 100 cotton genotypes grown in low and normal N environments

From: Identification and screening of nitrogen-efficient cotton genotypes under low and normal nitrogen environments at the seedling stage

N level Height /cm SPAD value ADW /g RDW /g TDW/g ANU /mg RNU /mg TNU /mg NUtE /(g DW.g−1 plant N) NUpE /(g plant N. g−1 soil N)
Low N Range 6.63~ 17.83 29.7~ 41.88 1.09~ 3.14 0.73~ 1.79 1.83~ 4.73 13.10~ 63.80 4.52~ 21.79 18.07~ 68.32 48.76~ 165.98 0.45~ 1.71
Mean 12.53 33.73 2.23 1.36 3.6 28.88 8.8 37.68 97.14 0.94
CV 18.06 6.7 16.85 15.94 15.5 22.84 28.76 18.6 13.62 18.45
Normal N Range 10.02~ 25.67 26.98~ 41.45 1.8~ 4.68 0.89~ 2.08 2.69~ 6.40 36.60~ 102.77 10.04~ 30.2 46.64~ 127.29 37.24~ 69.48 0.12~ 0.32
Mean 17.72 36.62 2.8 1.42 4.22 71.76 18.93 90.7 47.01 0.23
CV 17.57 7.44 17.64 17.63 16.6 19.14 20.82 17.55 13.22 17.55
N level ** ** ** ** ** ** ** ** ** **
Genotype ** ** ** ** ** ** ** ** ** **
G*N ** ** ** ** ** ** ** ** ** **
  1. * and ** indicate significant difference at P < 0.05 and P < 0.01 level respectively, the same below; ADW aboveground dry weight, RDW root dry weight, TDW total dry weight, ANU aboveground nitrogen uptake, RNU root nitrogen uptake, TNU total nitrogen uptake, NUtE nitrogen utilization efficiency, NUpE nitrogen uptake efficiency