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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