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Titolo:
Survival and development of Phoradendron californicum and Acacia greggii during a drought
Autore:
Lei, SA;
Indirizzi:
Community Coll So Nevada, WDB, Dept Biol, Las Vegas, NV 89146 USA Community Coll So Nevada Las Vegas NV USA 89146 , Las Vegas, NV 89146 USA
Titolo Testata:
WESTERN NORTH AMERICAN NATURALIST
fascicolo: 1, volume: 61, anno: 2001,
pagine: 78 - 84
SICI:
1527-0904(200101)61:1<78:SADOPC>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
XYLEM-TAPPING MISTLETOES; WATER RELATIONS; HOST;
Keywords:
host; parasite; autoparasite; Acacia greggii; Phoradendron californicum; drought; survival; development; Las Vegas valley; southern Nevada;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Lei, SA Community Coll So Nevada, WDB, Dept Biol, 6375 W Charleston Blvd, Las Vegas, NV 89146 USA Community Coll So Nevada 6375 W Charleston Blvd LasVegas NV USA 89146
Citazione:
S.A. Lei, "Survival and development of Phoradendron californicum and Acacia greggii during a drought", WEST N AM N, 61(1), 2001, pp. 78-84

Abstract

Survival and development of parasitic and autoparasitic Phoradendron californicum (desert mistletoe) and their Acacia greggii (catclaw) hosts were quantitatively investigated during the 1997 drought in southern Nevada. Phoradendron californicum was parasitic on other individuals of the same species(autoparasitic), and these in turn were parasitic on A. greggii hosts. An extensive drought from February 1995 to mid-July 1997 was characterized by extremely low seasonal rainfall and high summer air temperatures. Extensively mistletoe-infested hosts had significantly less canopy volume and produced significantly fewer leaves, flowers, and fruits than uninfested (control) or lightly infested hosts. Mistletoe plants on A. greggii hosts with fewer infections produced significantly more leaves and fruits and survived better than mistletoe plants on A. greggii hosts with extensive infestations. Autoparasites had significantly less canopy volume and fruit production than their parasitic hosts and parasites on hosts with fewer infections. Severity of infestation was significantly negatively correlated with A. greggii and P. californicum survival, as it was with leaf, flower, and fruit development of A. greggii and parasitic and autoparasitic P. californicum during the 1997 drought in southern Nevada.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 15:28:33