Search Results
Abstract
Light had no significant effect on traits related to onion (Allium cepa L.) seed production by plants from bulbs which had been exposed to various light and temperature treatments during storage. However, storage temperature affected seed yield/plant, number of seed/plant, number of seed/umbel, weight of individual seeds, and number of leaves/plant. Plants from bulbs stored at 7°C the first half and 2°C the last half of the storage period had the highest seed yield and the greatest number of seeds/plant. The heaviest seeds were produced by plants from bulbs that were stored at both 2° and 7° during the storage period. Bulbs stored at 2° and then at 7° produced plants that had fewer leaves than plants from bulbs stored at the 2 other temperature regimes.
Abstract
F2 generation of lettuce crosses (Lactuca sativa L.) involving 2 low and 3 high nitrate accumulating cultivars indicated a few major genes were responsible for the control of high or low nitrate accumulation. The segregation of low × high crosses suggested that the 2 low accumulators had different genotypes. Low nitrate accumulation could be explained by dominant complementary epistasis in ‘Valmaine’ and a single dominant gene in ‘Wonder Van Voor-burg’. The F2 segregation of ‘Valmaine’ × ‘Wonder Van Voorburg’ cross confirmed the geno-typic differences. Recessive genes controlled high nitrate accumulation.
Abstract
Bulbils were produced in the umbels of onion plants when the bulbs were treated at the time of planting with PBA carried in methyl cellosolve. Methyl cellosolve alone and a PBA-acetone formulation did not induce bulbil formation.
Abstract
Analysis of spears of 9 cultivars of asparagus (Asparagus officinalis L.) revealed differences in fiber content between cultivars. The least fiber was found in ‘MSU-1’, ‘Mary Washington’, and ‘U.C. 72’, and the most in ‘N.J. Improved’ and ‘U.C. 711’. There were significant differences in fiber content in the 5 sections of spear studied; the tip (10 cm) portion of spear had the least while the bottom section (17.5 – 20.0 cm from the tip) had the most fiber.