30 



Fla. 



Hawaii 



Hawaii 



Idaho 



Idaho 



Preconditioning of Plants in Relation to Cold Tolerance , 



(1) Develop a quantitative method for measuring cold toler- 

 ance. (2) Study characterized preconditioning procedures 

 and quantitatively evaluate their effects on tolerance of 

 plants to cold injury. (3) Evaluate genetic cold tolerance 

 of commercial tree fruit varieties grown in Florida. 



Fruit Crops 838 



The Growth of Sugar Cane, Saccharum officinarum, as 

 Affected by Environmental and Other Factors.— ■Physiological 

 Factors Influencing Organogenesis (Development of Organs) in 

 Saccharum I To determine physiological factors influencing 

 development of vegetative and reproductive organs of certain 

 varietal hybrids of S. officinarum , 



Bot., PI. Path.~6£372~^ 



Studies on Post-Harvest Physiology of Hawaiian-Grown 

 Fruits, Vegetables and Ornamentals as Applied to Quality, Stor- 

 age Life and Marketability . Investigate basic requirements of 

 harvesting, transporting, handling and storage necessary to 

 assure high quality and marketability of various plant commodi- 

 ties from various areas. 



PI. Physiol. 663 



Effect of Irradiating Russet Burbank Potatoes with Radio- 

 Active Fission Products upon Their Storage and Market Qualities, 

 Disease Prevention and Killing of Nematodes Contained Within 

 the Tubers . To learn (1) dosage of irradiation from fission 

 products that will inhibit sprouting of Russett Burbank tubers, 



(2) effect of said treatment on taste, cooking and processing 

 qualities, flesh color and greening of skin under normal re- 

 tail conditions, (3) loss during storage due to rots, shrinkage, 

 and sprouting compared to non- treated tubers, (ii) temperature 

 that will allow least moisture, sprout and rot loss to treated 

 tubers, (5) how long marketing can be extended by use of treat- 

 ment and still receive consumer acceptance, (6) best tine for 

 using treatment to expect best results, (7) possible effect of 

 irradiation of tubers in delaying expression of Verticillium 

 wilt through modification of dormancy, (8) if said dormancy 



can be broken by use of ethylene or other chemicals, and (9) 

 if Ditylenchus destructor can be killed by irradiation without 

 injuring the table quality. 

 Hort. 268 Coop. AEC 



The Effect of Fluoride on Plant Enzyme Systems and the 

 Nature""of Fluorine Compounds Present in Plant Tissues . (1) 

 Study effect of fluorides on plant enzymes of resistant and 

 susceptible plant species. (2) Learn how fluorides exist in 

 plant; if as an inorganic constituent or in some combination 

 with protein, lipide or other material. 



Agr. Chera. 293 (W-39) 



