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- Author or Editor: Xenia Y. Wolff x
- HortScience x
Four cultivars each of Physalis peruviana L. and P. pruinosa L. were field-grown in one season in Baton Rouge, La., to determine optimal species, cultivars, and soil amendments for local production. Soil amendments were inorganic N-P-K fertilizer, 50 t rabbit manure/ha, 25 t chicken manure/ha, or any of these treatments plus peatmoss. All cultivars tested produced vegetative growth, but only P. pruinosa cultivars flowered and fruited. Total marketable yields, percent total soluble solids (TSS), juice pH, and total titratable acid were similar for all P. pruinosa cultivars tested. Fruit yields averaged 4.4 t·ha-l; TSS, pH, and acid averaged 11.6%, 4.71, and 0.73%, respectively. Plants receiving rabbit manure produced significantly higher marketable yields than those receiving rabbit manure with peatmoss or chicken manure with or without peatmoss. Soil amendment had no effect on fruit quality.
Abstract
Carotenes from vegetables and fruits are vitamin A precursors that contribute about half of the vitamin A in the U.S. diet (3) and two-thirds of the world diet (5). Carrots typically contain 65 to 90 ppm carotenes (1) and are estimated to be the major source of carotene for U.S. consumers (3). Few pro-vitamin A sources surpass the carotene content of typical carrots, although red palm oil can contain >825 ppm carotenes (2). Genetic selection for higher carotene levels in carrots could increase the dietary consumption of carotene and consequently vitamin A. A high carotene mass carrot population was developed for use in breeding, genetic, and biochemical studies of carrot (Fig. 1).