Biochemical responses of rice roots to cold stress

Botanical Studies

Table 2 The cold stress response of rice seedling in the root

Genotype	Temperature (°C)	Fresh weight (g)	Dry weight (g)	Length (cm)	Length reduction (%)
TT30	27 → 27 15 → 27	^#0.211^b 0.107^fg	0.0316^a 0.0143^ef	8.12^a 3.95^e	51.3
TN11	27 → 27 15 → 27	0.134^e 0.070^h	0.0206^d 0.0083^h	6.68^b 4.43^de	33.7
TNG71	27 → 27 15 → 27	0.246^a 0.121^ef	0.0344^a 0.0156^e	8.22^a 5.57^c	32.2
TK9	27 → 27 15 → 27	0.182^cd 0.094^g	0.0240^bc 0.0118^fg	6.63^b 4.75^cde	28.4
KH139	27 → 27 15 → 27	0.196^bc 0.088^gh	0.0254^bc 0.0097^gh	8.03^a 4.53^de	43.6
TK16	27 → 27 15 → 27	0.182^cd 0.083^gh	0.0266^b 0.0116^fg	7.97^a 5.45^c	31.6
TK14	27 → 27 15 → 27	0.169^d 0.092^gh	0.0241^bc 0.0112^fgh	6.58^b 4.60^de	30.1
TCS10	27 → 27 15 → 27	0.161^d 0.098^fg	0.0229^cd 0.0139^ef	6.82^b 5.18^cd	24.0
^$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