Table 1.

Changes in breaking tensil strength, shattering seed weight and its ratio in the varieties

			2003	2004	2006	2011
breaking tensile strength (g)	W/SK86GF	maturing time	74.8 ± 8.2 aa	71.5 ± 14.8 a	77.7 ± 4.5 a	76.7 ± 8.3 a
		+15Db	72.2 ± 15.0 d	72.2 ± 25.9 a	66.5 ± 8.5 a	51.2 ± 7.4 b
	Kitawasesoba	maturing time	31.8 ± 9.8 c	17.6 ± 3.9 b	36.2 ± 1.8 b	22.8 ± 7.4 c
		+15D	19.7 ± 6.1 b	19.8 ± 6.0 b	18.7 ± 3.3 c	22.9 ± 9.8 c
shattering seed weight (kg/a)	W/SK86GF	maturing time	0.03 ± 0.04 a	0.47 ± 0.20 a	0.01 ± 0.01 a	0.19 ± 0.09 a
		+15D	0.06 ± 0.05 a	0.42 ± 0.24 a	0.02 ± 0.00 a	0.19 ± 0.03 a
	Kitawasesoba	maturing time	0.05 ± 0.02 a	2.42 ± 0.39 b	0.05 ± 0.01 b	0.18 ± 0.08 a
		+15D	0.95 ± 0.34 b	3.39 ± 0.42 b	0.24 ± 0.07 c	0.83 ± 0.16 b
shattering seed raito (%)c	W/SK86GF	maturing time	0.22 ± 0.30 a	3.08 ± 1.24 a	0.08 ± 0.03 a	1.00 ± 0.46 a
		+15D	0.39 ± 0.34 a	2.57 ± 1.61 a	0.12 ± 0.03 a	0.96 ± 0.09 a
	Kitawasesoba	maturing time	0.23 ± 0.09 a	12.4 ± 1.67 b	0.28 ± 0.05 b	0.69 ± 0.32 a
		+15D	4.34 ± 1.63 b	21.1 ± 0.80 c	1.40 ± 0.31 c	3.30 ± 0.60 b

means ± SD.

^aValues with in the same row with different alphabets are significantly different (p < 0.05) among groups by Ryan’s multiple range test.

^b+15D means ‘maturing time + 15 days’.

^cShattering seed weight/(yield + shattering seed weight) × 100.