Table II.

Mn-SOD activity as a percentage of total SOD activity in shoot tissues of transgenic alfalfa plants expressing pMitSOD or pChlSOD

Tissue	Control	pMitSOD	pChlSOD
	%
Apexa	19	32	39
Nodes	18	25	42
Leaf 1b	17	45	54
Leaf 2b	19	46	50
Leaf 3b	19	45	51
Leaf 4b	20	45	47
Petiole	17	52	47
Stem	18	40	37
lsd (0.05)c	NSd	2	4

Activities were measured on three high-expressing pMitSOD plants and two high-expressing pChlSOD plants.

^aApex includes the apical meristem and the young expanding leaf. 

^bLeaves 1 to 4 represent trifolidate leaf blades numbered sequentially from the first fully expanded leaf to the fourth. 

^clsd within a column at the 5% level of probability; n = 6 (control and pChlSOD) or 12 (pMitSOD). 

^dNS, Not significantly different according to analysis of variance.