Notes

Slide Show

Outline

1	Introducing Adagio: A Slow-bolting Arugula
2	Arugula (Eruca sativa, Brassicaceae); 2n = 22
3	Traditional Medicine
4	The arugula plant
5	History
6	Dioscorides Materica Medica
7	Two Types
8	Adaptability for Indiana Easy to grow but bolts in the spring. Volunteer plants bolt very early—vernalization? Can be continuously planted; we suggest biweekly plantings. Can be harvested and re-harvested up to three times. Market acceptance a problem but can be used in mixes. Some problems with flea beetle injury. Very cold hardy. In 2002 we harvested in early December.
9	Field Production
10	Floating Beds
11	Flowering
12	Field Production
13	Field Production
14	Selection for Late Bolting
15	Slow bolting plant on left
16	Mean and distribution of days to 50% flowering of arugula germplasm.
17	Selection of nine late-flowering plants
18	Comparison of flowering distribution between an Italian source and a late flowering selection of arugula.
19	Selections from Late Flowering Cross
20	Siliques
21	Purdue arugulas at Mount Vernon, WA
22	Arugula at Mount Vernon, WA, 2003
23	‘Astro’ at Mount Vernon, WA
24	Arugula at Mount Vernon, WA, 2003
25	Purdue #4
26	Purdue #1
27	Summary Arugula is a promising green for the Midwest with a spicy flavor that can compete with lettuce. Unlike lettuce, arugula is not bitter. It can be harvested from sequential plantings and it is possible to perform several harvests. Sequential harvest seems to delay flowering. We recommend planting at two to three-week intervals. Early bolting in the spring can be reduced by selection for late flowering. Preliminary results indicate that mass selection for late flowering is effective. An evaluation of the USDA germplasm collection indicated that the Italian commercial cultivars have variability for late flowering and are far superior to any of the lines in the collection Adagio: a late-flowering selection, able to stay vegetative much longer than commercial sources, will be available soon and facilitate production.