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An Apple Rest Model For Mild Winter Conditions, Jose Ignacio Del Real Laborde
An Apple Rest Model For Mild Winter Conditions, Jose Ignacio Del Real Laborde
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Two areas of research are reported: an experiment on the effects of warm temperature prestratification treatments on seed dormancy and a new chill unit model.
Crabapple seeds (Malus sargentii Rehd.) were allowed to imbibe water and were given warm pretreatments at temperatures of 16, 20, 24 and 28C for periods of 3, 10, 20 or 30 days before cold stratification at 4C for 20, 40, 60, 80 or 100 days. Pretreatments resulted in increased chilling requirements for seedling emergence. A short chilling period (20 days) also altered the leaf area, shoot length, internodal length and root/shoot ratio of the …