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Table 2 Logistic equations describing grain starch accumulation in three hulless barley cultivars

From: Starch accumulation in hulless barley during grain filling

Cultivars

Poly-saccharide

Logistic equation

Correlation coefficient

Tmax/d

D/d

Vmean/(mg grain−1 d−1)

Vmax/(mg grain−1 d−1)

C0

Ganken 5

Starch

y = 9.358/(1 + e3.780 − 0.194X)

0.982**

19.46

30.78

0.304

0.454

0.209

Amylose

Amylopectin

y = 9.358/(1 + e3.779 − 0.194X)

0.982**

19.46

30.79

0.304

0.454

0.209

Beiqing 6

Starch

y = 23.839/(1 + e5.510 − 0.222X)

0.982**

22.84

32.76

0.728

1.32

0.15

Amylose

y = 5.834/(1 + e11.522 − 0.497X)

0.990**

23.17

27.59

0.212

0.725

0.0001

Amylopectin

y = 19.008/(1 + e4.139 − 0.177X)

0.981**

23.39

35.80

0.531

0.841

0.298

Kunlun 12

Starch

y = 19.432/(1 + e4.352 − 0.227X)

0.978**

19.13

28.79

0.675

1.105

0.247

Amylose

y = 7.046/(1 + e10.573 − 0.454X)

0.982**

23.31

28.16

0.25

0.799

0.0002

Amylopectin

y = 16.389/(1 + e3.380 − 0.168X)

0.977**

20.10

33.18

0.494

0.689

0.54

  1. y, grain starch accumulation; x, days after anthesis
  2. T max time to reach the maximum accumulation rate, D accumulation duration, V mean mean accumulation rate, V max maximum accumulation rate, C 0 initial growth potential
  3. ** Significant at the 0.01 probability level