Factors Influencing Date Pollen Viability

Date Palm Pollen Viability in Relation to Stor· Age Conditions

Viability of fresh and stored pollen of date palm (Phoenix dactyllf.,.., L) was studied. Pollen samples were stored at room temperat. ture (25-30°C), under refrigeration (3-4°C)t..ln vivo test, pollen viability was determined'by percent fruit set. Results suggest that different storage conditions had no apparent effect on pollen viability as tested with acetoearmine. However, results of in vivo...

Factors influencing cord blood viability assessment before cryopreservation.

BACKGROUND Cord blood (CB) viability determines product quality and varies with time and temperature of exposure before cryopreservation. Global viability assessment may not reflect viability of white blood cell (WBC) subsets, CD34+ cell viability, or hematopoietic stem/progenitor cells function. STUDY DESIGN AND METHODS We compared trypan blue (TB) and acridine orange/propidium iodide (AO/PI...

A method to estimate pollen viability from pollen size variation.

The mean diameter of viable pollen grains is approximately 13 μm greater than the mean diameter of inviable grains in Mimulus guttatus. We show that this difference is large enough to be detected by particle counters and that these machines can be used to obtain a rapid estimate of pollen viability. While requiring a separate calibration, a size-based statistic is also strongly correlated with ...

Effects of pollen sources on fruit characteristics of shahani date

Gibberellin regulates pollen viability and pollen tube growth in rice.

Gibberellins (GAs) play many biological roles in higher plants. We collected and performed genetic analysis on rice (Oryza sativa) GA-related mutants, including GA-deficient and GA-insensitive mutants. Genetic analysis of the mutants revealed that rice GA-deficient mutations are not transmitted as Mendelian traits to the next generation following self-pollination of F1 heterozygous plants, alth...