Stress-induced expression of IPT gene in transgenic wheat reduces grain yield penalty under drought

Journal of Genetic Engineering and Biotechnology

Table 4 Primary subcomponents of the grain number in EXP 2 and EXP3 under greenhouse conditions

Treatment	G	Pots (EXP2)		Microplot (EXP3)
Treatment	G	NS	GNS	NSA	GNS
WW	WT	11.7^a	64.9^a	464.4^b	18.7^c
	TR1	13.3^a	58.5^ab	468.9^b	25.4^b
	TR4	14.7^a	48.6^b	535.6^a	22.0^bc
WD	WT	7.3^b	24.0^c	362.2^c	25.0^bc
	TR1	12.7^a	28.6^c	408.9^bc	34.0^a
	TR4	12.7^a	22.5^c	453.3^b	22.9^bc
Genotype (G)		**	*	**	**
Water treatment (T)		*	***	***	**
G × T		ns	ns	ns	ns
LSD		3.4	10.4	60.8	6.3
ΔWW vs. WD	WT	4.3	40.9	102.2	6.3
	TR1	1.6	31.3	60.0	8.6
	TR4	2.2	26.1	80.2	1.6
Significance		**	***	ns	**

G genotype, T water treatment, WW well-watered, WD water deficit, NS number of spikes per plant, GNS grain number per spike, NSA number of spikes per unit of area. Number of spikes and grain number per spike (GNS) for the three genotypes (WT, TR1, and TR4) grown in pots (EXP2) and microplots (EXP3) in the greenhouse under well-watered (WW) and water-deficit (WD) treatments. In pots, NS is expressed per plant, whereas in microplots, it is expressed per unit area (m²). Asterisks indicate significant differences (*p< 0.1; **p< 0.05; p< 0.001; ns, not significant). Means (n=3) sharing the same letters in columns do not differ (p< 0.1)