. Bulletin. Science. DROUGHT EFFECTS ON FRUIT IN JUNIPER AND MISTLETOE 93 Table 6. Fruit characteristics of uninfected J. osteosperma hosts (control) and hosts with three levels of P. juniperinum infections in Pine Creek of southern Nevada (n = 100 per fruit or seed characteristic). Weather Infection Diameter Thickness Dry mass Seed length Seed dry mass condition status (mm) (mm) (g) (mm) (g) Drought Control Light Moderate Heavy Non-drought Control Light Moderate
. Bulletin. Science. DROUGHT EFFECTS ON FRUIT IN JUNIPER AND MISTLETOE 93 Table 6. Fruit characteristics of uninfected J. osteosperma hosts (control) and hosts with three levels of P. juniperinum infections in Pine Creek of southern Nevada (n = 100 per fruit or seed characteristic). Weather Infection Diameter Thickness Dry mass Seed length Seed dry mass condition status (mm) (mm) (g) (mm) (g) Drought Control Light Moderate Heavy Non-drought Control Light Moderate Heavy juniperinum and its J. osteosperma hosts to drought were not previously inves- tigated. Phoradendron juniperinum are autotrophic hemiparasites (Kuijt 1969; Calder and Bernhardt 1983; Lei 1999), but must acquire water and mineral nutrients from its J. osteosperma host plant through direct xylem connections (Ehleringer et al. 1986). In general, Phoradendron species compete aggressively with their hosts for water and nutrients (Calder and Bernhardt 1983). A combination of severe drought and heavy P. juniperinum infestation would impose a substantial 700. Drought Non-drought WEATHER CONDITION Fig. 5. Fruit production (Mean ± SE, n = 85) of uninfested J. osteosperma hosts (control) and hosts with three levels of P. juniperinum infections in Pine creek of southern Nevada. Narrow vertical bars denote standard errors of the means. Within the same weather condition, columns labeled with different letters are significantly different at P < Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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