Allelopathic Effects of Lantana camara L. Leaf Aqueous Extracts on Germination and Seedling Growth of Capsicum annuum L. and Daucus carota L.

Table 5

The principal component analysis (PCA) for the allelopathic activity of L. camara leaf aqueous extract on germination of D. carota and C. annum​ seeds.

Parameters	PC1 (D. carota)	PC1 (C. annuum)
Eigenvalue	5.99	7.98
Difference	5.75	7.93
Proportion	0.95	0.99
Cumulative	0.95	0.99
RLP	0.24	0.33
RLR	0.31	0.31
PIR	−0.24	−0.33
RIR	−0.31	−0.31
GR	0.34	0.33
GIR	−0.34	−0.33
V	0.30	0.33
MGT	−0.35	−0.32
GI	0.36	−0.23
AI	0.34	0.33

GR, germination rate; GIR, germination inhibition rate; MGT, the mean germination time; GI, the germination index; RLP, the relative length of plumule; RLR, the relative length of radicle; PIR, the plumule inhibition rate; RIR, the radicle inhibition rate; AI, the allelopathic index.