2.5 Date analysis:
Germination force (GF), germination percentage (GP) and germination index (GI) were calculated according to the following equation (Wang, 2019):
GF (%) = Number of germinated seeds in first one-third of evaluation days / Total number of Seeds ×100
GP (%) = (N1+ N2 + N3… + Nn-1+ Nn)/ Total number of Seeds ×100
GI = (N1)/1+ (N2)/2+(N3)/3+ … + (Nn-1)/(n-1) + (Nn)/n
where, N1, N2, N3, . . ., Nn: the number of germinated seeds in the first, second, and final count, and 1, 2, . . ., n was the first, second, and final evaluation days.
The allelopathic effect response index (RI) and comprehensive allelopathic effect response index (CE) were calculated using the Equation suggested by Williamson (1988):
RIn =1 - Cn /Tn ( T≥C ) or Cn /Tn– 1( T<C )
CE= (RI1+RI2+RI3+…+RIn) / n
where T is the treatment value and C is the corresponding value of control. Positive values indicate stimulating effects, while negative ones indicate inhibitory activity of the aqueous extracts.
Experimental data were subjected to one-way analysis of variance (ANOVA). Statistical significant difference was assumed at the probability level of 0.05 and means were separated by using LSD.