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Table 2 Effects of four split nitrogen fertilizer treatments on 13C distribution amount in different organs at 72 h after labeling and maturity in wheat plants. Different letters in each column represent significant differences in each tissue among four treatments at each sampling date according to LSD at 5% level

From: Split nitrogen fertilizer applicationĀ improved grain yield in winter wheat (Triticum aestivum L.) via modulating antioxidant capacity and 13C photosynthate mobilization under water-saving irrigation conditions

Stage

Year

Treatments

13C distribution amount (Ī¼gĀ stemāˆ’1)

Leaf

Stem and sheath

Spike axis and husk

Grain

At 72 h after labeling

2016ā€“2017

N1

70.88a

295.89c

112.06b

-

N2

67.04a

310.02b

116.02b

-

N3

68.95a

342.64a

125.50a

-

N4

66.89a

326.75a

120.81a

-

2017ā€“2018

N1

69.52a

276.01b

110.11a

-

N2

65.72a

285.30b

112.48a

-

N3

68.92a

309.35a

115.92a

-

N4

68.98a

294.79b

113.70a

-

At maturity

2016ā€“2017

N1

34.14a

92.32a

34.66b

274.80d

N2

29.19b

87.37b

49.93a

305.75c

N3

26.32c

81.99c

51.16a

341.92a

N4

28.66b

86.71b

48.62a

321.22b

2017ā€“2018

N1

35.59a

83.65a

43.16b

263.24c

N2

31.28b

77.97b

42.87b

288.20b

N3

27.82c

72.11c

48.10a

324.96a

N4

30.91b

78.19b

47.83a

300.96b