in olive breeding programs such as the choice of parents, how to improve seed germination procedures, and seedling initial vigor, which is related to the length of the juvenile period. This is particularly interesting for table olive for which
141 POSTER SESSION 21 (Abstr. 833-841) Seeds and Seedlings
91 WORKSHOP 8 (Abstr. 1042-1045) Seed Vigor Testing and Utilization
Abstract
Most progenies from intercrossed or outcrossed inbred selections of strawberry (Fragaria × ananassa Duch.), germinated as well or better than a control outcross between 2 vigorous noninbred clones. Germination of an S3 progeny was lower than the control. In general, inbreeding reduced seedling vigor while intercrossing or outcrossing of inbreds restored vigor. Germination total and rate as expressed by an index were unrelated to subsequent seedling growth.
Abstract
Chinese chestnut (Castanea mollissima Bl.) has much potential as a nut-producing orchard or landscape tree, being resistant to chestnut blight [Endothia parasitica (Murr.) P.J. & H.W. Anderson] and high-yielding. Chestnut is monoecious and largely self-sterile, requiring cross-pollination to produce nuts (Sanders, 1974). There is considerable variation in nut traits, such as size and sugar content, even among nuts from the same tree (Miller, 1987), due to, in part, xenia effects. The nut is composed mostly of cotyledonary tissue with a small embryo and no endosperm (Sanders, 1974). Propagation by seed is generally successful; however, no criteria exist for selection of nuts that will produce superior seedlings. The objectives of this study were to examine the relationships between seed weight, seedling emergence, and seedling growth of half-sib Chinese chestnut seeds.
Abstract
Seeds of 2 cultivars of muskmelon (Cucumis melo L.) were subjected to accelerated aging at 45°C and 100% relative humidity (RH) for periods up to 288 hours. In general, longer periods of aging resulted in greater declines in seed quality as measured by laboratory, greenhouse, and field emergence and germination. Seeds of ‘Iroquois’ were more sensitive to aging than ‘Hale’s Best #36’. Significant declines in germination occurred prior to any significant increases in electrolytic leakage from decorticated seeds indicating that electrolytic leakage is not a suitable test for seed quality with muskmelon.
result of pre-storage and post-storage factors ( Powell et al., 1984 ). Improving the seedling emergence potential (emergence percentages and uniformity) of a seed lot is important for crops that are produced from transplants such as pepper. Vigor may be
Toorop, 1997 ). Water deficit had no effect on seed germinability and vigor of onion ( Allium cepa L.) ( Žebrauskienė et al., 2005 ), peanut ( Arachis hypogaea L.) ( Ramamoorthy and Basu, 1996 ), and maize ( Zea mays L.) and sorghum [ Sorghum bicolor
, where a priori knowledge of storage behavior is almost always lacking ( Kauth and Pérez, 2011 ; Milstein, 2005 ; Walters, 2015 ). Similarly, seed vigor is a concept that attempts to reconcile the biochemical, physiological, and genetic properties of
seeds grown outside the region. We evaluate how seed source impacts seedling height at transplant and traits including plant height, crown width, biomass production, and plant vigor. Materials and Methods Seed sources. We initially purchased