we estimated the rainfall interception loss (i), canopy storage capacity (s), the ratio of mean evaporation rate from the wet canopy () over the mean rainfall intensity () (mm h-1) (), and free throughfall coefficient (p) in a fraxinus rotundifolia mill. stand located in an afforested park land in a semiarid region of iran. for each storm event, i was calculated as the gross rainfall (gr) minus...

ROSLYN M. LONDON,2 SAMMY L. EBER,1,2 SANDHYA S. VISWESWARIAH,4 WILLIAM J. KRAUSE,3 AND LEONARD R. FORTE1,2 1Harry S. Truman Memorial Veterans Hospital and Departments of 2Pharmacology, and 3Pathology and Anatomical Sciences, School of Medicine, Missouri University, Columbia, Missouri 65212; and 4Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalo...

Over the past 15 years, the grape breeding program at the University of California, Davis, has been evaluating Vitis rupestris x Muscadinia rotundifolia selections for resistance to the dagger nematode, Xiphinema index, and to Pierce’s disease (PD). Selections from these crosses exhibit very strong resistance to X. index and PD. In addition to breeding efforts, populations from these crosses ha...

We investigated range-wide phylogeographic variation in three European ash species (Fraxinus sp., Oleaceae). Chloroplast DNA (cpDNA) microsatellites were typed in the thermophilous Fraxinus angustifolia and Fraxinus ornus and the observed haplotypes and the geographic distribution of diversity were compared to cpDNA data previously obtained in the more cold-tolerant Fraxinus excelsior. We found...

The hydraulic resistance of pit membranes was measured directly in earlywood vessels of Fraxinus americana and Ulmus americana. The area-specific resistance of pit membranes (r(mem)) was higher than modeled or measured values obtained previously for hardwood species, with r(mem) of 5.24 × 10(3) MPa·s·m(-1) for Fraxinus and 2.56 × 10(3) MPa·s·m(-1) for Ulmus. The calculated resistance of pit can...

Cissus rotundifolia (Forsk.) Vahl, a native to Africa and the Arabian Peninsula is recorded for the first time from the Peninsular India. A detailed description with illustration and relevant notes are provided for easy identification.

Ten new labdane-type diterpenes were isolated from the fruit of Vitex rotundifolia L. (Verbenaceae), along with a known diterpene, vitexilactone. Their chemical structures were determined on the bases of spectroscopic data.