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

Journal of Genetic Engineering and Biotechnology

Table 3 Grain yield and its components discriminated for main stems or tillers under greenhouse conditions

Treatment	G	Pots (EXP2)						Microplots (EXP3)
		GY (g pl⁻¹)		GN		IGW (mg)		GY (g m⁻²)		GN		IGW (mg)
		Ms	Ts	Ms	Ts	Ms	Ts	Ms	Ts	Ms	Ts	Ms	Ts
WW	WT	3.7^a	28.5^a	89.7^a	669.2^a	41.0^c	42.8^b	431.7^b	31.8^c	8029.4^d	621.5^d	53.7^a	49.9^a
	TR1	3.3^ab	28.0^a	85.7^a	696.9^a	38.4^c	40.6^b	493.7^a	64.1^b	10546.1^a	1294.1^cd	46.8^b	49.9^a
	TR4	2.9^bc	24.9^a	71.3^b	636.2^a	40.5^c	40.3^b	423.6^bc	78.0^ab	9185.0^c	2575.3^a	46.4^bc	38.0^b
WD	WT	0.8^d	8.3^b	14.3^d	169.0^b	57.9^a	49.8^a	374.5^cd	18.4^c	8448.0^cd	581.5^d	43.9^c	29.7^c
	TR1	3.0^bc	13.0^b	57.0^c	291.1^b	53.1^ab	46.1^ab	471.9^ab	66.1^b	11961.8^b	1731.1^bc	39.2^d	37.2^b
	TR4	2.8^c	11.5^b	53.3^c	229.1^b	52.0^b	50.3^a	330.9^d	92.0^a	8080.4^d	2368.1^ab	41.0^d	37.6^b
Genotype (G)		**	ns	**	ns	ns	ns	**	**	**	**	*	ns
Water treatment (T)		***	***	***	***	***	***	*	ns	ns	ns	**	**
G × T		***	ns	***	ns	ns	ns	ns	ns	ns	ns	ns	ns
LSD		0.5	5.9	9.8	181.8	5.7	6.32	49.6	21.0	917.8	756.1	2.7	5.3
ΔWW vs WD	WT	2.6	20.2	75.3	500.2	17.0	7.0	58.9	13.3	1273.9	185.6	9.8	20.1
	TR1	0.3	15.0	28.7	407.2	14.7	5.6	85.0	21.3	1742.5	438.4	7.6	12.7
	TR4	0.2	13.4	18.0	405.8	11.5	10.1	92.7	38.9	1165.5	861.4	5.4	3.2
Significance		***	**	***	**	**	ns	ns	**	ns	**	ns	***

WW well-watered, WD water deficit, G genotype, T water treatment, MS main stems, TS tillers, GY grain yield, GN grain number, IGW individual grain number. In pots, GY and GN are expressed per plant, while in microplots, they are 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)