Deno’s Garden

Rorippa islandica

Genus Rorippa

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 28 days to germinate.

90% germination in 28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Rorippa p. 71Public domain
Show the original text
Rorippa (Brassicaceae). R. islandica germ. 70L(90% in 4th w), 70 GA-3(80% in 3rd w), and none in 70D or 40. DS at 70 for 3 m had no effect, but DS for 1 y lowered germination in 70L to 8%.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Rorippa p. 71. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around March 15, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 21 days to germinate.

80% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Rorippa p. 71Public domain
Show the original text
Rorippa (Brassicaceae). R. islandica germ. 70L(90% in 4th w), 70 GA-3(80% in 3rd w), and none in 70D or 40. DS at 70 for 3 m had no effect, but DS for 1 y lowered germination in 70L to 8%.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Rorippa p. 71. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 3

DerivedN. C. Deno, 1996

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Rorippa p. 71Public domain
Show the original text
Rorippa (Brassicaceae). R. islandica germ. 70L(90% in 4th w), 70 GA-3(80% in 3rd w), and none in 70D or 40. DS at 70 for 3 m had no effect, but DS for 1 y lowered germination in 70L to 8%.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Rorippa p. 71. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.