Identification of factors that affect water and sugar transport in strawberry could aid
in attempts to influence fruit size and quality. Apoplastic water potential (Ψaw) gradients
within the strawberry plant, that could influence water and assimilate transport, were
identified. Fruit expansion was very sensitive to water stress and occurred when...
Mechanisms by which plant organs accumulate
photoassimilate are important in determining final sink size
and may involve invertase activity. Because strawberry
fruit are strong sinks for sugars, changes in invertase
levels during development and mechanisms of sugar uptake
within the fruit were examined.
Fruit from greenhouse-grown, day-neutral strawberries,
(Fragaria X...
Death of flower parts near bloom due to inflorescence necrosis (IN) is associated with high ammonium (NH₄⁺) concentration in flower clusters, shade, cool wet weather preceding bloom, and excessive vigor. Faults in NH₄⁺ assimilation are suspected to cause a rise in NH₄⁺ concentration to toxic levels in flower cluster but...
Foliar B sprays have increased fruit set in 'Italian' prune
(Prunus domestica L.) by 2 fold in some trials and had no effect
in others. This work was conducted to identify reasons for this
inconsistent response. Since B levels in flowers are associated
with the amount of fruit set, factors...
Sinks, plant organs which depend on the import of assimilates
for growth, play a central role in determining assimilate distribution
patterns within the plant. The strawberry fruit is a strong
sink for dry matter and its effect on carbon partitioning and
assimilation in the plant as well as the mechanism...
During 2 seasons effects of high and low irrigation (water applied
at -0.6 and -2.5 bars soil water potential, respectively) and
density were evaluated on yield parameters and flower/pod development
at mainstem nodes 2 and 6 (terminal) of 'Oregon 1604', a determinate
snap bean. High and low plant densities were...
A series of four studies were conducted in Colombia, South America,
in the field and the greenhouse to determine the effect of plant
competition and mulching on carbohydrate and photosynthate distribution
and nitrogen fixation in beans (Phaseolus vulgaris L.).
Mulching beans (determinant growth habit) with rice hulls in the
lowland...
The influence of mycorrhizae on the nutrient uptake of
strawberries and red raspberries was investigated. On red raspberries
innoculation with a mycorrhizal fungus resulted in increased P uptake
and a greater concentration of P in the shoots of the plants. The
strawberries were innoculated with 2 species of mycorrhizal fungus....
A cultivar comparison study was conducted to identify similarities
and differences in cane characteristics between 2 primocane fruiting
red raspberry cultivars and to determine if the differences and
similarities can help determine cultural practices that may improve
productivity. The comparison of the cultivars 'Amity1 and 'August
Red' showed a difference...
Size and color are important visual quantity attributes of the fruit of strawberry (Fmgaria x ananassa Duch.). Strawberry cultivars produce fruit of a characteristic size and color, the later being the result of accumulation of particular anthocyanins. This research sought to determine the basis for genotypic differences in fruit size...