(a).

Lines/variety	Bark diameter (mm) of jute stem				Bark thickness (mm) of jute plant				Area of a trapezoid (sqmm) in trans. section
	Base	Middle	Top	Overall	Base	Middle	Top	Overall	Base	Middle	Top	Overall
Acc. 1306	14.33	12.06	7.50	11.30	4.21	3.17	2.12	3.17	0.51	0.45	0.26	0.41
Acc. 1318	17.56	14.78	7.72	13.35	4.00	3.91	2.34	3.42	0.53	0.51	0.27	0.43
O-0512-6-2	14.00	10.44	7.44	10.63	3.61	2.84	2.17	2.87	0.30	0.28	0.20	0.26
O-0412-9-4	14.07	10.47	7.52	10.69	3.64	2.85	2.19	2.89	0.31	0.31	0.21	0.28
O-0411-10-4	13.00	10.44	5.44	9.63	3.58	2.66	1.64	2.63	0.52	0.31	0.16	0.33
O-043-7-9	12.22	10.39	7.89	10.17	3.27	2.74	2.37	2.79	0.39	0.31	0.24	0.31
O-049-1-3	13.39	10.17	7.22	10.26	3.56	2.83	2.11	2.83	0.42	0.22	0.22	0.29
O-0419-3-1	11.39	9.22	6.83	9.15	3.37	2.42	2.13	2.64	0.33	0.28	0.27	0.29
JRO (segregate)	15.44	11.56	7.78	11.59	4.55	2.95	2.22	3.24	0.53	0.31	0.22	0.35
BJRI tossa pat-5	15.44	11.56	5.83	10.94	4.31	3.01	1.65	2.99	0.50	0.36	0.16	0.34
BJRI tossa pat-8	10.61	10.22	7.56	9.46	4.22	2.32	2.07	2.87	0.47	0.23	0.22	0.31
JRO-524	13.44	10.39	6.89	10.24	3.32	2.74	1.75	2.60	0.33	0.31	0.14	0.26
Range	6.95	5.56	2.45	4.2	1.28	1.59	0.73	0.82	0.23	0.29	0.13	0.17
Mean	13.74	10.98	7.14	10.62	3.80	2.87	2.06	2.91	0.43	0.32	0.21	0.32
S.E.	0.81	0.48	0.35	0.117	0.18	0.13	0.09	0.084	0.07	0.05	0.02	0.030
CV (%)	7.25	5.40	5.99	1.35	5.71	5.36	5.44	3.52	21.15	19.71	13.97	11.26
LSD (0.05)	1.67∗∗	1.00∗∗	0.72∗∗	0.243∗∗	0.37∗∗	0.26∗∗	0.19∗∗	0.17∗∗	0.15∗	0.11∗∗	0.05∗∗	0.06∗∗