Relationships of the mean value of the internode length of alfalfa and its variability with different fall dormancy ratings.

<p>(a): Internode length of alfalfa across eleven FD ratings (<i>r</i> = -0.27, <i>P</i><0.01, <i>n</i> = 196); (b): Internode length of alfalfa across four FD categories; (c): Variable coefficients of the internode length of alfalfa across four FD categories (<i>r</i> = 0.42, <i>P</i>>0.05, <i>n</i> = 11); (d): Variable coefficients of the internode length of alfalfa across four FD categories. The relationships of mean value of internode length of alfalfa and its variability with FD ratings were tested by Spearman's rank correlation. The dashed curve shows the 95% confidence band. Abbreviations: FD, fall dormancy; FDT, fall dormancy type; SDT, Semi-fall dormancy type; NDT: Non-fall dormancy type; EDT, Extreme non-fall dormancy type.