Table 1.

Difference between ZY821 and ZS9.

	ZY821	ZS9	Difference
Yield (kg/ha)	9.57	11.03
Protein content (%)	31.27%	32.83%	1.56% *
Oil content(%)	39.80%	42.00%	2.20% **
Glucosinolate content in meal(μm/g)	123.50	19.18	-104.32 **
Erucic acid (%)	42.00%	0.23%	-45.77% **
Eicosenoic acid (%)	9.75%	1.20%	-8.55% **
Oleic acid	16.90%	68.00%	51.10% **
Duration of dominating cultivation	1988–1995	2003-Now
Average annual coverage	1.80 MH	0.47 MH

*means different character, **means larger different character.