493 Inducing Polyploidy Pollen in Apple Cultivars

Pollen Germination of Diverse Cotton Cultivars

High temperatures during cotton flowering and early boll development can detrimentally affect cotton yield. Current commercial cultivars do not have pronounced tolerance to elevated temperatures, and improved methods of screening for thermo-tolerance are needed. The effect of heat stress on cotton has been measured with several different methods including membrane leakage, chlorophyll fluoresce...

SNP discovery in apple cultivars using next generation sequencing

Background Knowledge about single nucleotide polymorphism (SNP) markers is extremely important in the development of genotyping assays, allowing improvements in plant breeding through marker-assisted selection. With the emergence of next generation sequencing platforms, high-density SNP discovery in the genome of plant crops becomes more achievable. In this project, we carried out whole genome ...

S-RNases from self-incompatible and -compatible apple cultivars: purification, cloning, enzymic properties, and pollen tube growth inhibitory activity.

Four S-RNases (RNase associated with self-incompatibility) were purified from the styles of two apple cultivars (Malus domestica), a self-incompatible cv., Starking Delicious (SD), and a self-compatible cv., Megumi (MG). Each cultivar produced two S-RNases and their enzymatic properties such as specific activity, pH optimum, thermal stability, and molecular mass, were characterized. The four S-...

Different Preclimacteric Events in Apple Cultivars with Modified Ripening Physiology

"Anna" is an early season apple cultivar exhibiting a fast softening and juiciness loss during storage, in comparison to two mid-late season cultivars "Galaxy" and "GD." The poor storage capacity of "Anna" was correlated with high lipid oxidation-related autoluminescence, high respiration and ethylene production rates, associated with high expression of MdACO1, 2, 4, 7, and MdACS1. All cultivar...

The effect of supplementary hand pollination on fruit set and pollen tube growth in apple