(b).

Lines/ variety	Average no. of trapezoid per trans. section of stem				Total fiber bundle area (sqmm) in trans. section of stem				Fiber bundle layer in trapezoid
	Base	Middle	Top	Overall	Base	Middle	Top	Overall	Base	Middle	Top	Overall
Acc. 1306	70.67	50.67	37.33	52.89	36.19	22.91	9.76	22.95	11.11	8.67	4.00	7.93
Acc. 1318	72.33	66.67	42.67	60.56	38.33	33.98	11.33	27.88	11.67	9.44	4.56	8.56
O-0512-6-2	71.00	59.67	42.00	57.56	21.35	16.63	8.22	15.40	9.56	7.11	4.22	6.96
O-0412-9-4	69.33	59.67	0.42	43.14	21.67	16.93	7.66	15.42	9.73	7.29	4.27	7.10
O-0411-10-4	61.00	56.33	36.33	51.22	31.99	17.56	5.87	18.47	11.44	7.89	3.11	7.48
O-043-7-9	60.67	56.67	43.67	53.67	23.67	17.32	10.79	17.26	10.11	7.44	5.22	7.59
O-049-1-3	67.33	59.00	51.67	59.33	28.50	12.98	11.13	17.54	11.89	7.67	5.00	8.19
O-0419-3-1	60.67	59.67	43.33	54.56	20.06	16.70	11.32	16.03	10.22	7.11	4.67	7.33
JRO (segregate)	64.00	49.67	45.00	52.89	34.16	15.25	9.81	19.74	12.67	8.56	4.89	8.70
BJRI tossa pat-5	78.33	57.33	36.33	57.33	39.16	20.53	5.68	21.79	13.22	8.11	3.89	8.41
BJRI tossa pat-8	54.67	53.33	47.33	51.78	25.78	12.13	10.37	16.09	12.44	6.56	4.56	7.85
JRO-524	60.33	56.67	45.00	54.00	19.51	17.32	6.18	14.34	11.33	7.44	3.78	7.52
Range	23.66	17	51.25	17.42	19.65	21.85	5.65	13.54	3.66	2.88	2.11	1.74
Mean	65.86	57.11	39.26	54.08	28.36	18.35	9.01	18.58	11.28	7.77	4.35	7.80
S.E.	4.31	3.41	3.11	1.545	5.86	3.25	1.15	1.870	0.40	0.33	0.20	0.19
CV (%)	8.02	7.31	9.70	3.50	25.32	21.69	15.69	12.33	4.29	5.27	5.76	2.91