Biochemical responses of rice roots to cold stress

Botanical Studies

Table 1 The cold stress response of rice seedling in the shoot

Genotype	Temperature (°C)	Fresh weight (g)	Dry weight (g)	Height (cm)	Height reduction (%)
TT30	27 → 27 15 → 27	^#0.101^bc 0.071^fg	0.0184^b 0.0093^ef	3.22^def 2.53^ghij	21.5
TN11	27 → 27 15 → 27	0.077^ef 0.055^h	0.0139^c 0.0068^g	3.57^cd 2.12^ij	30.6
TNG71	27 → 27 15 → 27	0.120^a 0.068^fg	0.0226^a 0.0123^cd	4.82^a 3.45^de	28.4
TK9	27 → 27 15 → 27	0.099^cd 0.064^gh	0.0190^b 0.0106^de	3.50^de 2.67^ghi	23.7
KH139	27 → 27 15 → 27	0.103^bc 0.066^fgh	0.0192^b 0.0078^fg	4.00^bc 2.85^fgh	28.7
TK16	27 → 27 15 → 27	0.088^de 0.055^h	0.0140^c 0.0065^g	3.35^de 2.35^ij	29.1
TK14	27 → 27 15 → 27	0.096^cd 0.063^gh	0.0183^b 0.0073^fg	3.02^defg 2.70^ghi	10.6
TCS10	27 → 27 15 → 27	0.114^ab 0.053^h	0.0201^b 0.0066^g	4.25^b 2.48^hij	41.6
^$ANOVA analysis
Genotype		**	**	**
Temperature		**	**	**
G × T		**	**	**

The temperature was set at 15 °C for cold treatment and 27 °C for control. After 4 days of treatment, the temperature was adjusted to 27 °C for 3 days before harvesting
^#Different letters represent the significant difference with LSD tests among cultivars or treatments (p < 0.05)
^$G × T: effect of genotype and temperature interaction; *p < 0.05; **p < 0.01