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

Journal of Genetic Engineering and Biotechnology

Table 1 Agronomic traits of the WT and transgenic events in the growth chamber

Treatment	G	EM-AN (days)	H (cm)	GY (g pl⁻¹)	GN	IGW (mg)	B (g)	HI
WW	WT	65^cde	66.5^b	6.1^ab	181.3^a	34.0^cd	15.4^bc	0.40^a
	TR1	69^ab	68.0^b	5.9^ab	197.3^a	29.7^cd	16.2^ab	0.36^ab
	TR2	69^bc	65.3^b	2.0^fg	117.5^b	17.2^e	9.9^fg	0.21^de
	TR3	63^e	61.8^bc	6.1^ab	190.8^a	32.5^cd	15.2^bc	0.40^a
	TR4	66^bcd	66.5^b	6.5^a	207.8^a	32.0^cd	17.8^a	0.37^a
	TR5	71^a	77.8^a	2.3^ef	114.6^b	20.4^e	15.8^abc	0.15^ef
	TR6	63^de	67.5^b	5.3^b	195.8^a	27.3^d	15.5^abc	0.35^ab
WD	WT	67^ab	51.3^d	4.0^c	111.8^bc	35.8^bc	13.4^cde	0.30^bc
	TR1	65^bcd	52.0^d	4.2^c	125.8^b	33.1^cd	13.8^bcd	0.30^bc
	TR2	67^ab	56.8^cd	1.3^gh	41.3^e	32.4^cd	10.5^fg	0.12^f
	TR3	62^e	50.0^d	3.1^d	75.8^d	42.3^ab	9.3^g	0.35^ab
	TR4	64^cde	49.5^d	3.0^de	89.8^cd	34.8^bc	11.8^def	0.25^cd
	TR5	70^ab	61.6^bc	1.1^h	32.4^e	34.2^c	9.4^g	0.11^f
	TR6	60^e	41.0^e	1.7^fgh	36.8^e	45.6^a	10.9^efg	0.16^ef
Genotype (G)		***	***	***	***	**	***	***
Water treatment (T)		**	***	***	***	**	***	***
G × T		*	ns	***	***	**	*	ns
LSD		2.7	8.2	0.7	28.1	6.7	2.4	0.06

G genotype, WW well-watered, WD water-deficit conditions, T treatment, EM-AN days from emergence to anthesis (days), H plant height (cm), GY (g pl⁻¹) grain yield, GN grain number per plant, IGW (mg) individual grain weight, B, above-ground biomass (g pl⁻¹), HI harvest index. Asterisks indicate significant differences (*p< 0.1; **p< 0.05; p< 0.001; ns, not significant). Means (n=4) sharing the same letters in columns do not differ (p< 0.1)