Portal de Periódicos da CAPES

Morphological Differences among Apple Leaf Types

1992; American Society for Horticultural Science; Volume: 27; Issue: 2 Linguagem: Inglês

10.21273/hortsci.27.2.101

2327-9834

I. Schechter, John Proctor, D.C. Elfving,

Horticultural and Viticultural Research

Leaf characteristics of mature `Sturdeespur Delicious'/MM.106 apple trees (Malus domestica Borkh.) were studied in two experiments. In 1989 canopy foliage on fruiting trees was divided into shoot leaves, leaves on nonfruiting spurs, and leaves on fruiting spurs. Shoot leaves were the heaviest, the largest, and contained the highest internal gas volume and chlorophyll content. The two spur-leaf types differed in their leaf characteristics except for stomate density. In 1990 shoot and spur leaves on nonfruiting spurs on fruiting trees had lower leaf water content than those leaves on nonfruiting trees. All other shoot-leaf characteristics were similar. Leaves on nonfruiting spurs on nonfruiting trees were larger than those on fruiting trees.