Table 1.

Production of hygromycin-resistant calli and plants from A. tumefaciens-inoculated rice callus

Rice strain	A.t. strain	Amount of callus cocultured, mg	HygR callus isolated, n	HygR callus/1,000 mg cocultured callus	n			Regeneration rate, % B/A
					HygR callus for regeneration A	Regenerating callus B	Plants regenerated C
Nipponbare	LBA4404(pKUB)	2,670	131	49.1	92	89	444	97
Zhong8215	LBA4404(pKUB)	3,240	105	32.4	77	77	733	100
93VA	EHA105(pKUB)	1,740	129	74.1	106	66	334	62
	EHA105(pKUC)	2,910	81	27.8	45	42	85	93
ZAU16	EHA105(pKUC)	2,210	66	29.9	45	31	303	69
	EHA105(pKBB)	1,430	22	15.4	14	13	93	93
91RM	EHA105(pKUB)	2,430	78	32.1	56	29	82	52
	EHA105(pKUC)	2,520	27	10.7	25	25	131	100
T8340	EHA105(pKUB)	1,180	66	55.9	44	41	62	93
	EHA105(pKUC)	2,280	39	17.1	34	12	21	35
	EHA105(pKSB)	2,580	99	38.4	26	19	35	53
	EHA105(pKBB)	1,680	86	51.2	54	44	162	81
Pin92-528	EHA105(pKUC)	670	11	16.4	10	9	14	90
	EHA105(pKBB)	2,350	12	5.1	7	7	9	100
T90502	EHA105(pKUC)	1,320	28	21.1	14	12	23	86
Kaybonnet	EHA105(pKUB)	790	5	6.3	5	4	6	76
Total or mean		34,270	1,008	34.3	671	533	2,603	79