established in the early spring, come into production near the end of the June-bearing production season, and continue to fruit through the summer and fall months ( Pritts and Dale, 1989 ). Conditions in the high-elevation valleys of the Intermountain West
’ tolerance to high-pH soil, determine yield potential in high-pH soil, and compare two perennial planting systems for high-elevation areas in the Southwest. Material and Methods On 5 May 2011, 16 strawberry cultivars were planted with two planting system
total capsaicinoid content increased significantly with increasing elevation. Innovative applications of capsaicinoids in the pharmaceutical industry have stimulated interest in the use of capsaicinoids, and more information is needed on the genotype and
throughout North America, particularly in proximity to urban centers where fresh local produce commands premium prices. This local demand has recently been increasing as a result of the expanding local food movement. Conditions in the high-elevation valleys
characterize the spatial distribution of naturally occurring populations of dallisgrass and bahiagrass and examine possible associations with mowing height, soil penetration resistance, volumetric soil water content, and elevation. Materials and Methods
Greenhouse grown transplants of 23 lettuce varieties were produced in 1” diameter speedling flats, seeded May 1, transplanted to the field in early June when plants were 4 weeks of age. Transplants were grown in a commercial potting media of peat-vermiculite-perlite. Loose leaf, butterhead, crispbead or iceberg and cos types were included, field-planted at the Elam Swarey farm in Burkes Garden, Tazewell County, Virginia, at an elevation of 3,400 ft. above sea level. No crisphead (iceberg) varieties were found to be satisfactory in yield or quality for area conditions. Of loose leaf varieties, `New Red Fire' and `Red sails' were judged highly adapted for high elevation summer production at sites above 2,000' elevation and/or for fall production at lower Piedmont and coastal areas for October and November harvests. `Tiara', a dark green loose leaf was judged the best of its type in this test. Of the cos types, `Pyramid' and `Ideas' were best adapted to high elevation summer production or lower elevations fall production. Of the butterhead types, `Condor' and `Encore' were suited to higher elevations, `Condor' showing more heat tolerance.
Abstract
Potato tubers of Solanum tuberosum cv. Kennebec, produced at elevations from 1533 to 3198 m at 2 levels of insolation per site were grown in a greenhouse at 1533 m to determine the effect of the parental clone's environment on the performance of the succeeding generation. Rate of emergence, early vegetative growth, and tuber growth increased with increasing elevation of the parental clone but there was no significant difference in vegetative growth or tuber yield at vine senescence. The environment of the parental clone had no direct influence on the photosynthetic activity of the clonal progeny, but an inverse relationship between bulking efficiency and altitude of seed tuber production was evident. Shading of the parental clone at each elevation had little influence on the succeeding generation.
elevation in the atmosphere of the vessel headspaces. ( A ) Microshoots were cultured in the culture vessels. ( B ) Vials containing 3 mL of mixed NaHCO 3 and Na 2 CO 3 solution (3 M) in the ratio of 73/27 (v/v), respectively, were placed in the vessels
Abstract
Harvest indices were measured in 2 mature bearing orchards of ‘Mcintosh’ apple (Malus domestica, Borkh.) in 2 seasons. Full bloom dates differed between the 2 orchards by 4 days in one season and 7 days in the other. Heat-unit accumulation during the growing season differed between the 2 orchards by 27%. The onset of the accelerated rate of ethylene production (AREP) began 133 days past full bloom in both orchards. The first significant increase in skin anthocyanin occurred before the AREP in the higher elevation orchard and after the AREP in the lower elevation orchard. Changes in flesh firmness, soluble solids, acidity, and skin chlorophyll were not significantly different before and after the AREP. The optimum harvest dates, evaluated by poststorage analysis, were on the AREP in the higher elevation orchard and after the AREP in the lower elevation orchard.
`D'Anjou' pears (Pyrus communis, L.) growing in 3 locations with the elevation at 150 meters, 380 meters, and 610 meters respectively in Hood River valley, Oregon were harvested at the commercial maturity with the flesh firmness of 62.3 Newton (±2.2 N) and stored in air at -1°C. Regardless of different growing elevations, the incidence of superficial scald became noticeable after 2.5 months of storage and became substantial after 3 months. The rate of scald development was higher on the fruit from 150 meters elevation than those from higher elevations. Alpha-farnesene and conjugated trienes in the peel tissue accumulated at faster and higher rates in the fruit from 380 meters and 610 meters elevations than those from 150 meter elevation. The threshold level of conjugated trienes which causes superficial scald disorder was different from the fruit grown at different elevations.