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United States Department of Agriculture

Agricultural Research Service

Research Project: PHYSIOLOGICAL AND GENETIC BASIS OF POSTHARVEST QUALITY, DISEASE CONTROL, AND PHYTONUTRIENT CONTENT OF WATERMELONS Project Number: 6222-21430-003-00
Project Type: Appropriated

Start Date: Apr 21, 2011
End Date: Jan 12, 2012

Objective:
Objective 1: Determine impact(s) of pre-harvest production and post-harvest handling and storage factors on quality, including phytonutrients, for watermelon. Sub 1A. Evaluate effects of gene sequences, linkages, and other genetic factors on human health bioactive compounds in watermelon germplasm. Sub 1B. Determine effects of pre-harvest diseases, environmental conditions, and cultivars on carotenoid and free amino acid levels in watermelon. Sub 1C. Elucidate the effects of post-harvest storage/handling time and temperature on carotenoid and free amino acid levels in watermelon. Objective 2: Develop analytical methods/screening techniques/molecular markers for L-citrulline, L-ornithine, carotenoids, and other human health bioactive compounds in watermelon. Sub 2A. Determine inheritance/sequence of carotenoid genes in watermelon. Sub 2B. Develop analytical methods to quantify free amino acids, including L-citrulline, L-ornithine and other bioactive compounds. Sub 2C. Develop processes for economical extraction and purification of value-added components of watermelon.

Approach:
Experiments to evaluate the effects of gene sequences, linkages, and other genetic factors on human health bioactive compounds in watermelon will be conducted. Analytical methods to quantify free amino acids, including L-citrulline, L-ornithine, and other bioactive compounds will be developed, along with processes for economical extraction and purification of value-added components of watermelon fruit. The effects of post-harvest storage/handling time and temperature on carotenoid and free amino acid levels in watermelon will be elucidated. The effects of pre-harvest diseases, environmental conditions, and cultivars on carotenoid and free amino acid levels in watermelon will be determined.

Last Modified: 12/28/2014
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