Table 3.

Specific leaf weight and chlorophyll concentration in old source leaves of M82 scions grafted on control M82 or transgenic MDK:IPT rootstocks.

	M82/M82	M82/MDK:IPT
Specific leaf weight of 18-day-old leaves (mg cm−2)	21.7 ± 0.7	23.6 ± 2.5
Chlorophyll concentration in fully expanded leaves (μg cm−2)	40.2 ± 3.1	40.4 ± 2.6
Chlorophyll concentration in 18-day-old leaves (μg cm−2)	33.3 ± 4.0 b	45.8 ± 4.1 a

Samples were taken from fully expanded source leaves and 18 days after full expansion. Data represent means (±SE) of six replicates.

Different letters indicate significant differences between homografted and heterografted plants by Student’s t-test, p < 0.05.