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United States Department of Agriculture

Agricultural Research Service

Research Project: EVALUATION OF ADVANCED USDA CITRUS SCION GERMPLASM

Location: Citrus and Other Subtropical Products Research

2012 Annual Report


1a.Objectives (from AD-416):
Screen novel citrus scion germplasm for unique fruit characteristics.


1b.Approach (from AD-416):
Fruit produced on citrus hybrids will be harvested at three times during the season to identify the maturity window for the particular selection. At the time of harvest data will be collected on fruit appearance (size, shape, presence of disease), rind color, ease of peeling, presence of seeds, soluble solids, total acidity, and taste (unacceptable, potentially acceptable, or acceptable). Scion selections identified worthy of further evaluation will be propagated onto commercial rootstocks for further evaluation.


3.Progress Report:

This project is related to Objective 2 of this in-house project: Screen germplasm for important traits and select superior individuals.

Replicated field trials to evaluate advanced scion selections have continued; data regarding disease incidence, cropping and fruit quality have been collected. Consumer taste panels were conducted for U.S. Early Pride and its parent, Fallglo. Results indicate a slight preference for the seedless U.S. Early Pride over the seedy Fallglo progenitor. Experiments to determine pollination requirements for U.S. Early Pride mandarin were conducted and show that numerous cultivars can serve as pollenizers for U.S. Early Pride. New field plantings of the most promising scion selections have been established with grower cooperators.


Last Modified: 7/22/2014
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