Treatment of daffodil (Narcissus pseudonarcissus) bulbs in a 0.37% formaldehyde water solution at 44 C for 240 minutes is a standard practice in California for management of the stem and bulb nematode, Ditylenchus dipsaci. Recent concern over the safety of formaldehyde and growers' requests for a shorter treatment time prompted a reevaluation of the procedure. The time (Y, in minutes) required ...

The present study evaluates the genotoxic potential of different soil samples collected from rice fields employing Allium cepa root chromosomal aberration assay using in situ and root dip modes of treatment. The study also involves assessment of oxidative stress by analyzing responses of certain antioxidative enzymes viz. catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), g...

MARS LANDING SITES. E. Howington-Kraus 1 , R.L. Fergason 1 , R.L. Kirk 1 , D. Galuszka 1 , B. Redding 1 , M. Theobald 1 , E. Littlefield 1 , S. Sutton 2 , A. Fennema 2 , D. Kipp 3 , R.E. Otero 3 , and M.P. Golombek 3 . 1 Astrogeology Science Center, U.S. Geological Survey, 2255 N. Gemini Dr., Flagstaff AZ 86001 ([email protected]), 2 Lunar and Planetary Lab., Univ. of Arizona, Tucson, AZ 85721, 3 ...

Isolation and identification of (S(S)R(C))-S-n-butylcysteine sulfoxide (1) from the bulbs of Allium siculum is reported. This compound was found in all parts of the plant (bulbs, stem, leaves, and flowers) along with known compounds (S(S)R(C))-S-methyl- and (R(S)R(C))-(E)-S-(1-propenyl)cysteine sulfoxides (2 and 3, respectively). In addition, six n-butyl-containing thiosulfinates (4-9) have bee...

Narrow plant spacing reduced bacterial bulb decay by 53 to 64% Do you know how easy this is? A simple modification to adjust your planting configuration is all it would take to drastically reduce losses from bacterial bulb decay. Our studies showed that when plant spacing was reduced from 6 or 8 inches to 4 inches with 3 or 4 rows per 3-foot plastic mulch bed (row spacing: 4 rows = 6 inch; 3 ro...

We adapt Berlekamp’s light bulb switching game to finite projective plans and finite affine planes, then find the worst arrangement of lit bulbs for planes of even and odd orders. The results are then extended from the planes to spaces of higher dimension. 1 Berlekamp’s Switching Game The original game is simple enough. 100 light bulbs arranged in 10 rows and 10 columns. Each column and row has...

PURPOSE To evaluate the sites of injury in patients with posttraumatic olfactory deficits and to compare damage with findings on clinical olfactory tests. METHODS Twenty-five patients with posttraumatic olfactory dysfunction were examined by means of olfactory testing, endoscopy, and MR imaging. MR surface-coil scans through the olfactory bulbs and tracts and head-coil scans of the temporal l...

Onion bulbs accumulate fructans, a type of soluble carbohydrate associated with lower rates of colorectal cancers. Higher fructan concentrations in bulbs are correlated with higher pungency, longer dormancy, and greater onion-induced antiplatelet activity (OIAA). We analyzed replicated field trials of a segregating family for types and concentrations of soluble carbohydrates in onion bulbs 90 d...