Table 1.

Leaf characteristics of select red maple cultivars and a seedling group.z,y

Cultivar/seedlingAverage leaf area (cm2)Petiole length (cm)Stomata per cm2Foliarx N(%)Chlorophyllcontent (SPAD)
Autumn Blaze83.9 cw11.8 cde91,350 a2.3 cde42.5 e
Autumn Flame40.0 f12.3 cd68,270 f2.6 a46.2 b
Fairview Flame58.3 de15.4 b63,460 i2.4 abc45.8 be
Franksred53.4 e9.3 g76,410 b2.2 de52.0 a
Karpick66.2 d9.6 fg70,190 e2.1 de45.3 bed
Morgan93.6 b11.5 cde65,710 g2.2 de42.9 de
Northwood54.7 e10.6 ef66,350 g2.4 abed51.1 a
October Glory61.9 de17.1 a64,420 h2.5 ab43.2 de
Redskin65.6 d11.4 de67,630 f2.0 e41.8 e
Scarsen131.5a12.7 c53,420 j2.5 abc43.1 de
Schlesingeri66.6 d12.5 cd72,440 c2.3 bed49.6 a
Seedling53.2 e6.2 h71,450 d2.1 e43.5 cde
Tilford60.5 de9.3 g67,310 g2.2 de42.9 de
Original Auburn collection
Armstrong84.4 ay15.8 a68,270 a2.2 a44.2 a
Bowhall89.6 a12.3 b55,130 c2.2 a41.8 a
Gerling54.6 b11.4 c60,580 b2.0 a44.2 a
  • z Means by column derived from: 520 leaves, 520 leaves, 260 leaf peels, 7800 samples, and 7800 samples, respectively.

  • y Means Original Collectionn from: 120 leaves, 120 leaves, 60 leaf peels, 1800 samples, and 1800 samples, respectively.

  • x Nitrogen levels determined with LECO CHN-600 analyzer (LECO Corp., St. Joseph, Ml).

  • w Mean separation within columns by Duncan’s Multiple Range Test, P = 0.05.