RECOMMENDATIONS FOR FLOWERING AND REPRODUCING WILD TOMATO SPECIES

RECOMMENDATIONS FOR FLOWERING AND REPRODUCING WILD TOMATO SPECIES

Species: New Taxonomy	Species: Old Taxonomy	Sowing^a	Flowering	Mating System	Pollination Method^b	# Plants / Gener.	# Plants per gal. pot	Seed Germination^c	Notes
S. cheesmaniae S. galapagense	L. cheesmanii f. minor	Nov	Spring	autogamous (SC)	selfing	10	2	Bleach for 1 hour	Seed produced under low light conditions is of poor quality.
S. chilense	L. chilense	July	Fall-Spring	allogamous (SI)	mass sib	50	5	Bleach 30 minutes
S. chmielewskii	L. chmielewskii	May	year round	facultative (SC)	mass sib	50	5	Bleach 30 minutes
S. lycopersicum	L. esculentum var. cerasiforme	April	year round	autogamous (SC)	selfing	6	(field)
S. habrochaites	L. hirsutum f. glabratum f. typicum	July	Fall-Spring	facultative (SC) allogamous (SI) or facultative	mass sib mass sib	15 50	3	Bleach 30 minutes	Forms edema on leaves under high humidity.
S. neorickii	L. parviflorum	May	year round	autogamous (SC)	selfing	15	3	Bleach 30 minutes
S. pennellii	L. pennellii	June	year round	allogamous (SI) or facultative (SC)	mass sib	50	5	Bleach 30 minutes	Use well-drained soil and water sparingly.
S. arcanum S. corneliomulleri S. huaylasense S. peruvianum	┐ ├─ L. peruvianum │ ┘	June	mostly year round	allogamous (SI) or facultative (SC)	mass sib	50	5	Bleach 30 minutes	Mountain races are short day.
S. pimpinellifolium	L. pimpinellifolium selfing pops: -------------------- outcrossing pops:	April -------- Feb	year round ------------- year round	autogamous (SC) ------------------ facultative (SC)	selfing ------------ mass sib	6 ------- 50	(field) ------------ 5		----------------------- Regenerate in greenhouse to limit outcrossing.
S. juglandifolium	S. juglandifolium	Aug	Fall-Spring	allogamous (SI)	mass sib	50	3 per 2 gal pot	Bleach for 1 hour, knick seed coat	Graft onto LA4135; water heavily; 8 mo. seed maturation.
S. lycopersicoides	S. lycopersicoides	Aug	Fall-Spring	allogamous (SI)	mass sib	50	3	Bleach for 1 hour, knick seed coat	Pollinate in spring months; 6 mo. seed maturation.
S. ochranthum	S. ochranthum	Aug	Fall-Spring	allogamous (SI)	mass sib	50	2 per 2 gal pot	Bleach for 1 hour, knick seed coat	Graft onto LA4135; water heavily; 10 mo. seed maturation.
S. sitiens	S. sitiens	Aug	year round	allogamous (SI)	mass sib	50	3	Bleach for 1 hour, knick seed coat	Graft onto LA4135; 6 mo. seed maturation.

^a Planting dates that are optimal for Davis, CA; certain groups (L. esculentum, chmielewskii, parviflorum and selfing pimpinellifolium) can thrive at almost any time of year.

^b Mass sib refers to the collection and combining of pollen from each plant (sibling) in the group being generated. The mixed pollen is then applied to all flowers in the group.

^c Bleach refers to soaking seed in half-strength household bleach (2.7% sodium hypochlorite). After bleaching, seeds should be rinsed for 15 minutes. For some species, knicking the seed

^d coat near the radicle end using a sharp scalpel is recommended after the rinsing step. All seeds will benefit from bleaching. Germinate at 25°C on blotter paper in plastic boxes.

Updated 1/27/2010