Promising selections require replicated evaluation to validate performance before they are released as named cultivars. Three to four years of mature performance data are needed, at minimum, using eight or more grafted replications of the selection(s) per environment, planted alongside well-known “check” cultivars.
This breeding scheme is designed to select individuals, which could warrant release as cultivars or simply use as next generation breeding parents. With that in mind, similar principles can be used to select improved seedling families. Seedlings families can be trialed in a replicated fashion in a given orchard, and mean (average) family performance and variation compared, which can vary greatly between different parents and combinations thereof.
Low alternate bearing
Late leafing, frost avoidance
Size (>12g), low variance
Minimize defects (splits, doubles, mealiness, off-flavors)
Color, ease of pellicle removal, flavor
Nuts dropped from bur
Crown architecture and branch strength
Tolerance to several pests/diseases
Narrow harvest window
Ease of pruning and orchard management
CIN evaluates hundreds of on-farm selections, curates an expanding repository of cultivars and superior germplasm, and produces thousands of seedlings from controlled crosses and open-pollinated families. CIN uses E-Brida 6x software as a cloud-based germplasm management platform in our applied breeding program to track essential breeding operations, phenotypic data collection, aid in marker assisted selection, and in situ conversation of diverse breeding stock.
The Chestnut Improvement Network evaluates hundreds of on-farm selections, maintains a curated repository of selected cultivars and superior germplasm, and produces tens of thousands of seedlings from controlled crosses and open-pollinated diversity families. These many chestnut trees must be cataloged in our database management system to track the overall genetic improvement in the network.
CIN uses E-Brida 6x as a cloud-based germplasm database management platform in our applied breeding program to track essential breeding operations, phenotypic data collection, aid in marker assisted selection, and in situ conservation of diverse breeding stock and landraces.
Overcoming data management bottlenecks in the workflow of CIN using integrated database management to track chestnut populations from the nursery to nut evaluation.