Methods
Images of Ipomoea sp. grown in greenhouse in fall of 2006
Images of Ipomoea spp. regenerated at Mayaguez, PR in 2012
S-9 SWEETPOTATO General Study. Contains data taken at the Southern Regional PI Station. The data in this environment was recorded by the staff of the Sweet Potato Repository at the Southern Regional PI Station. For additional information contact Bob Jarret at (404) 228-7207.
Evaluation of sweetpotato germplasm for storage rot and soil rot resistance. Disease reactions were recorded for Fusarium root rot (Fusarium solani (Mart.) Appel &Wr.), Java Black rot (Diploida tubericola (Ell. & Ev.) Taub.), Soil rot or pox rot (Streptomyces ipomoea (Person & W.J. Martin) Waksm & Henrici), Bacterial stem rot (Erwinia chrysanthemi Dupes), and Bacterial root rot (Erwinia chrysanthemi Dupes).
Images of Ipomoea batatas var. batatas (sweetpotato) storage roots taken in May 2007
Evaluation of sweetpotato germplasm for resistance to soil insect damage. Evaluated for wireworms, sweetpotato flea beetle, and grub worms.
Contains data taken at North Carolina State University. Experiment started and ended in 1989. White Delite (WD) was used as check: DRY-MATTER = 22.3, DWB-RED-SUGAR = 1.9, DWB-TOTAL-SUGAR = 8.3, DWB-STARCH = 66.9. FWB-RED-SUGAR = 0.4, FWB-TOTAL-SUGAR = 1.8, FWB-STARCH = 15.0, FIBER = 117. Numbers are means of 3 reps per year.
Contains data taken at North Carolina State University. Experiment started and ended in 1990. White Delite (WD) was used as check: DRY-MATTER = 24.4, DWB-RED-SUGAR = 0.9, DWB-TOTAL-SUGAR = 17.2, DWB-STARCH = 62.2. FWB-RED-SUGAR = 0.2, FWB-TOTAL-SUGAR = 4.2, FWB-STARCH = 15.2, CAROTENE = 0.7, FIBER = 153. Numbers are means of 3 reps per year.
Reniform nematode reproduction and root yield response
Contains observation data documented in passport area
Evaluation of sweetpotato germplasm for resistance to
Sweet potato leaf curl virus (SPLCV). The Final Performance Report may be viewed as an
Acrobat file (pdf)
Assessment of quality and storage traits of accessions in the USDA sweetpotato germplasm collection. Lines were grown at the University of Georgia Horticulture Farm in 1996 using standard commercial production practices. At harvest, the storage roots from each line were placed in individual plastic mesh bags, cured for 7 days (29 degrees C, 95% RH), and stored at 13 degrees C, 85% RH until utilization. Three representative average size sound roots of each line were selected for sensory evaluation and chemical analysis. At harvest, root shape and variability in root size were evaluated in the field. Respiration was measured after curing. Measurements of storage potential were conducted at 20 degrees C, and about 50% RH. Percent dry matter was calculated by freeze drying fresh unbaked samples. Freeze-dried raw and baked samples were used for extraction of sugars and non-volatile acids.
Evaluation of sweetpotato germplasm for sweetpotato weevil resistance (Cylas formicaruis elegantulus) at the South Mississippi Branch Experiment Station, Beaumont, Mississippi.