Vegetative and reproductive growth patterns in desert willow (<i>Chilopsis linearis</i> (Cav.) Sweet)

TitleVegetative and reproductive growth patterns in desert willow (Chilopsis linearis (Cav.) Sweet)
Publication TypeJournal Article
Year of Publication1978
AuthorsDePree E, Ludwig J.
JournalThe Southwestern Naturalist
Date Published1978
Call Number00050
Keywordsarticle, articles, Chilopsis,productivity, Chilopsis,reproduction, journal, journals, plant, desert willow, Chilopsis, plant,Chilopsis, reproduction,Chilopsis
AbstractThe patterns of leaf and fruit production of desert willow, Chilopsis linearis (Cav.) Sweet, in relation to temperature and precipitation pattterns in the Chihuahuan Desert of southern New Mexico were examined by harvesting shoot samples monthly during four growing seasons. On a site with 1.1 individuals per hectare, leaf production was about 5 kg.ha-1 in two years with dry springs and moist summers. In a year with a moist spring and a moist summer, leaf and fruit production was doubled. This high rate of production in the field during favorable periods supports previous laboratory studies that Chilopsis has a high acclimation potential under cool to moderate temperatures. However, in a year with a hot, dry spring and summer Chilopsis was adversely affected. This also supports previous studies that the net photosynthesis rate of Chilopsis was greatly reduced under high preconditioning temperatures and rapidly decreased as water potentials dropped below -10 bars.