Korean Journal of Breeding Science

Changes on isoegomaketone(IK) content by harvest date in leaf alcohol extract ('15, Jeongeup, Jeonbuk).

Variety	Harvest date	IK content (mg/mL)	IK (mg)/Alcohol extract (g)
Antisperill	23-Jul	210.7±6.7^***	21.4±0.6^***
	26-Aug	103.9±2.3^***	10.3±0.2^***
	23-Sep	228.5±11.4^***	22.8±1.1^***
Chookyoupjaso	23-Jul	22.9±3.2	2.3±0.3
	26-Aug	72.8±1.4	7.3±0.1
	23-Sep	6.4±0.1	0.6±0

^***significant at p<0.001 in the t-test.