Evaluation location: Washington, United States
Beta grown through 2004 - 2007Descriptor data collected from plants grown for seed increase. After vernalization, all plants were grown in greenhouses with day temperatures set between 15.5 C (60 F) and 21.1 C (70 F). All plants were planted in Sunshine TM #4 soilless potting media in 2 gallon pots and given 14-16 hour day lengths (supplimented with a combination of high pressure sodium and metal halide lights). Once bolting was initiated plants were fertilized every 7-10 days with 10-30-20 (N-P-K) Blossom Booster fertilizer and STEM micronutrients (11 1/3 tbsp fertilizer and 1/4 tsp. STEM /gallon for use with 15:1 hozon siphon proportioner). Vernalization protocol was as follows:
First venalization- 6 week old seedlings in rootrainersTM (in Sunshine TM #4 media) for a minimum of 4 months at 4 C , 12 hrs light, and watered as necessary.
Subsequent re-vernalizations were of adult plants in 2 gallon pots. Plants trimmed and cleaned of debris prior to placing at 4 C with 12 hrs light and watered as necessary. Vernalization length was for a minimum of 4 months.
Some accessions require 2 or more re-vernalizations for the entire population to flower.
If bolted plants produced a good quantity of seed they were thrown out;only non-bolted plants were revernalized. If bolted plants didn't produce a good quantity of seed, all plants were saved and revernalized. Bolting 2 data is % of plants vernalized.
Erysiphe
Descriptor data collected from plants grown for seed increase in the greenhouse. Ratings for Erysiphe susceptibility were made based on natural infection. No inoculations were made.
For an xlsx file of the evalaution data