Table 3.

Equations of the final sheath length (cm) response to increased plant densities for different cultivars.

PP		10	11	12	13	14	15	16	17	18
C1	a	−0.26	−0.25	−0.27	−0.27	−0.35	0.36	−0.31	−0.27	−0.27
	b	19.07	17.44	16.15	14.50	13.89	12.87	11.05	9.75	9.25
	R2	0.69	0.73	0.73	0.82	0.97	0.92	0.94	0.95	0.94
C2	a	–	−0.53	−0.25	−0.18	−0.30	−0.47	−0.43	−0.40	−0.38
	b	–	18.35	15.75	13.31	13.31	13.75	12.26	11.00	9.95
	R2	–	0.78	0.90	0.92	0.94	0.93	0.95	0.90	0.89
C3	a	−0.48	−0.44	−0.38	−0.51	−0.54	−0.46	−0.43	−0.30	−0.19
	b	21.88	18.97	17.16	16.40	14.41	12.39	11.55	9.63	8.15
	R2	0.78	0.79	0.90	0.77	0.82	0.81	0.77	0.75	0.89

Here C1 Zhengdan 958, C2 Longping 206, C3 Jinqiu 119, PP ranks. R² is statistically significant (P < 0.05).