1a.Objectives (from AD-416):
Identify high-yielding, nutritious onion and carrot cultivars adapted to a major South Asian production area. Establish Bangladesh oriented crop production and postharvest storage guidelines and manuals, programs and cell phone based information to integrate water, nutrient and pest management practices that optimize inputs, minimize off target impacts, and provide sound postharvest storage practices for seed production. Establish onion and carrot seed production systems to better fulfill local demands with a goal to decrease expensive seed imports, increase crop yield and improve human nutrition. Establish collaboration with AVRDC/WVC on large-scale carrot and onion seed production (large-scale seed production not currently part of their onion effort).
1b.Approach (from AD-416):
Germplasm Collections and Field Trials. Collect and evaluate local and regional onion and carrot seed in Bangladesh. Evaluate carrot carotenoids and onion thiosulfinates in diverse germplasm to estimate nutritional value and develop molecular marker fingerprints. Seed production. Evaluate factors that influence onion and carrot seed production including nutrient, water, and pest management. Develop recommendations based upon on-farm research results. Postharvest storage. Develop post-harvest storage systems for carrot root and onion bulb preservation to induce flowering for seed production. Develop recommendations necessary for farmers to successfully store roots and bulbs for seed production. Initiate deployment of technologies: Determine opportunities to incorporate carrot and onion storage into existing cold storage facilities to move research and technologies developed to large-scale.
This project was renumbered from 3655-21000-048-48S to 3655-21000-062-22S. Carrot seed samples of the same seed sources were tested and data gathered in several growing locations in the United States. Bulb storage of onions to prepare them for seed production is currently underway. This is the first effort in field testing of the same carrots and onions in both Bangladesh and the United States. It provides a framework for future field trialing and subsequent postharvest storage for seed production in this project. Gathering of documents for vegetable seed production regions, including the United States was initiated. Carrot germplasm has been shared, and onion germplasm is in transit. Postharvest storage technology information is being jointly discussed among project partners including approaches appropriate for Bangladesh. A primary community benefit to date is the generation of field production data for the same carrot germplasm in both Bangladesh and the U.S. This information provides a basis for determining what aspects of crop production can be extrapolated between our diverse growing environments. This progress relates to objective 1 in identifying germplasm and establishing improved seed production systems for carrot and onion.