Thermotolerance evaluation of Taiwan Japonica type rice cultivars at the seedling stage

Botanical Studies

Table 2 Survival rates of rice varieties under different treatment times and temperatures (%)

Temp. (°C)	Duration of temperature treatment (h)
	Koshiibuki			N22			TCS10			TK9
	1	2	3	1	2	3	1	2	3	1	2	3
44	100.00	100.00	100.00	91.70	75.00	66.70	100.00	83.33	83.33	100.00	83.33	83.33
45	100.00	100.00	34.40	77.80	50.00	16.70	100.00	100.00	80.16	83.33	33.33	5.53
46	60.00	50.0	25.00	38.90	11.10	0.00	66.67	50.00	16.67	33.33	33.33	0.00
48	17.10	6.30	0.00	0.00	0.00	0.00	18.75	16.67	15.83	16.67	0.00	0.00
Temp. (°C)	***			***			***			***
Duration (h)	***			***			***			***
T × hr	***			***			*			***

ns, *, **, *** Means not significant, significant at P ≦ 0.05, 0.01 and 0.001, respectively