Penelope Perkins

Penelope Perkins
North Carolina State University | NCSU · Department of Horticultural Science

About

226
Publications
111,126
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6,331
Citations
Citations since 2017
27 Research Items
3127 Citations
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20172018201920202021202220230100200300400500
20172018201920202021202220230100200300400500
20172018201920202021202220230100200300400500

Publications

Publications (226)
Article
Full-text available
Grafting high yielding tomato cultivars (Solanum lycopersicum L.) onto vigorous rootstocks can increase marketable yields, but questions remain regarding optimal cultural and growing conditions such as pinching and plant spacing. This study addressed some of the dynamics between grafted plants and cultural practices. Two scions, ‘Tasti-Lee’ (TL) an...
Article
Full-text available
U.S. black raspberry (BR) production is currently limited by narrowly adapted, elite germplasm. An improved understanding of genetic control and the stability of pomological traits will inform the development of improved BR germplasm and cultivars. To this end, the analysis of a multiple-environment trial of a BR mapping population derived from a c...
Article
Full-text available
Lycopene content in tomato fruit is largely under genetic control and varies greatly among genotypes. Continued improvement of lycopene content in elite varieties with conventional breeding has become challenging, in part because little is known about the underlying molecular mechanisms in high-lycopene tomatoes (HLYs). We collected 42 HLYs with di...
Article
Full-text available
Grafting watermelon scions to interspecific squash hybrids has been found to increase fruit firmness. Triploid (seedless) watermelon are prone to hollow heart (HH), an internal fruit disorder characterized by a crack in the placental tissue expanding to a cavity. Although watermelon with lower tissue firmness tend to have a higher HH incidence, ass...
Article
Full-text available
Watermelon (Citrullus lanatus) grafting has emerged as a promising biological management approach aimed at increasing tolerance to abiotic stressors, such as unfavorable environmental conditions. These conditions include environments that are too cold, wet, or dry, have soil nutrient deficiency or toxicity and soil or irrigation water salinity. Stu...
Article
Full-text available
Cut peonies (Paeonia lactiflora Pall.) have a relatively short vase life and limited availability due to seasonal production. Cultivars Festiva Maxima (FM), Monsieur Jules Elie (MJE), and Sarah Bernhardt (SB) stored at 0.7 °C had a longer flower open time at 12 weeks of storage compared to those held at −3.1 or 3.5 °C, while the flower bud time was...
Article
Full-text available
Essential plant nutrients are needed at crop-specific concentrations to obtain optimal growth and yield. Foliar tissue analysis is the standard method for assessing nutrient levels in plants. Symptoms of nutrient deficiency or toxicity occur when the foliar tissue values become too low or high. Diagnostic nutrient deficiency criteria for Brassica r...
Article
Full-text available
Separately, grafting and the use of plastic mulch can increase yield, quality, and early harvest of watermelon ( Citrullus lanatus ), especially when plants are under biotic and/or abiotic stress. A 2-year field study was conducted to evaluate the combination of four different rootstocks and two types of plastic mulch (black and clear) on date of w...
Article
Full-text available
This study investigated the effects of two doses of freeze-dried watermelon (WM) on bone and lipid parameters in ovariectomized (OVX) mice, a model of post-menopausal osteoporosis. Three-month-old C57BL/6 female mice (n=46) were sham-operated (SHAM) or OVX and randomly assigned to the control or WM diets for 12 weeks: SHAM-control, OVX-control, OVX...
Article
Postmenopausal status is associated with an increase in total and abdominal body fat as well as increased incidence of insulin resistance and cardiovascular disease. The purpose of this study was to determine if watermelon supplementation affects select systemic markers of atherosclerosis and measures of insulin resistance in overweight and obese p...
Article
Black raspberry (Rubus occidentalis L.), is one of a group of economically important members of the genus Rubus. In this paper, we describe a multi-state project to phenotype 43 traits in black raspberry. Two mapping populations that had parental material from multiple sources, including wild germplasm from North Carolina, Ontario, and Maine were u...
Article
Full-text available
Grafting is used in watermelon [ Citrullus lanatus (Thunb.) Matsum and Nakai] production as a means to combat soilborne diseases. To support the development of new rootstock cultivars in the United States, we screened cucurbit germplasm accessions for resistance to verticillium wilt (caused by Verticillium dahliae Kleb.) and for compatibility as wa...
Article
Full-text available
Objective Postprandial fluxes in oxidative stress, inflammation, glucose, and lipids, particularly after a high-fat meal (HFM), have been implicated in the development of cardiovascular disease (CVD). The aim of this study is to determine whether acute freeze-dried mango consumption modulates the postprandial response to an HFM. We hypothesized tha...
Article
Full-text available
Watermelon is the most significant, natural plant source of L-citrulline, a non-proteinaceous amino acid that benefits cardiovascular health and increases vasodilation in many tissues of the body. Watermelon is a member of the Cucurbitaceae, which includes squash, melon, pumpkin, and cucumber. It is possible that other cucurbits could be good sourc...
Article
Watermelon fruit [ Citrullus lanatus (Thumb) Matsum & Nakai] is a natural source of phytonutrients, including lycopene, citrulline, and arginine. Two segregating, highly outcrossed North Carolina watermelon populations, NC High Yield (NCHYW) and NC Small Fruit (NCSFW), were evaluated for these traits and for indicators of ripeness (pH and soluble s...
Article
Full-text available
Consumers prefer watermelon with sweet, red flesh, and the presence of lycopene, citrulline and arginine phytochemicals helpful for human health is an additional bonus. Breeders often select fruit with desirable flesh characteristics based on soluble solids content (Brix) and visual flesh color. Although marker assisted selection (MAS) of flesh tra...
Poster
Full-text available
Hollow heart is an internal fruit disorder found predominantly in triploid (seedless) watermelon and is known to cause load rejection if at moderate to severe stages. Cultivar selection, tissue density, pollination and environmental factors affect hollow heart incidence. We used NC Variety trial evaluations to correlate hollow heart to tissue firm...
Article
Tomato (Solanum lycopersicum L.) is a warm-season, cold-sensitive crop that shows slower growth and development at temperatures below 18 8C. Improving suboptimal temperature tolerance would allow earlier planting of field-grown tomato and a reduction in energy inputs for heating greenhouses. Grafting tomato onto high-altitude Solanum habrochaites (...
Article
Grafting watermelon (Citrullus lanatus) is a common practice in many parts of the world and has recently received increased interest in the United States. The present study was designed to evaluate early season growth, yield, and fruit quality of watermelon in response to grafting and in the absence of known disease pressure in a fumigated system....
Article
Blueberry (Vaccinium corymbosum L.) fruit, rich in anthocyanins, polyphenolics and antioxidant activity, has not been exploited fully for processing into juice. The objective of this study was to investigate the effect of commercial juice extraction enzymes (Cellubrix, Pectinex Ultra SPL, and Crystalzyme) on juice yield, total soluble solids (TSS),...
Article
Full-text available
Citrulline, arginine, and lycopene are naturally occurring compounds found in watermelon, Citrullus lanatus (Thumb) Matsum & Nakai, with beneficial effects on plant growth and human health. This study evaluated seven commercial cultivars and one breeding line for citrulline, arginine, and lycopene content in mature fruit grown at two locations in N...
Article
The consumption of fresh muskmelons (Cucumis melo reticulatus L.) has been linked to severe illness outbreaks due to contamination with bacterial pathogens. Antimicrobial essential oils (EOs) were incorporated into wash water sprays and evaluated as potential agents for postharvest disinfection of ‘Athena’ muskmelons. Freshly harvested fruits were...
Article
Full-text available
Lycopene is a naturally occurring red carotenoid compound that is found in watermelon. Lycopene has antioxidant properties. Lycopene content, sugar content and hollowheart resistance are subject to significant genotype×environment interaction (G×E), which makes breeding for these fruit quality traits difficult. The objectives of this study were to...
Article
The advanced selections, NCS 10-038 and NCS 10-156, from the North Carolina breeding program were compared to the traditionally used cultivars, Camarosa and Chandler, for storage life and fruit composition in 2014 and 2015. Postharvest quality of NCS 10-038 was similar to that of ‘Camarosa’ and ‘Chandler’ after 8 days storage at 4 °C. NCS 10-156 wa...
Article
Full-text available
Consuming carbohydrate- and antioxidant-rich fruits during exercise as a means of supporting and enhancing both performance and health is of interest to endurance athletes. Watermelon (WM) contains carbohydrate, lycopene, l-citrulline, and l-arginine. WM may support exercise performance, augment antioxidant capacity, and act as a countermeasure to...
Article
Background: High-fat (HF) diet-induced obesity is associated with changes in the gut microbiota. Fiber and other bioactive compounds in plant-based foods are suggested to prevent gut dysbiosis brought on by HF feeding. Mango is high in fiber and has been reported to have anti-obesogenic, hypoglycemic, and immunomodulatory properties. Objectives:...
Article
Demand for fresh berry products continues to grow in the United States; however, commercial raspberry production in the southeastern US is difficult because cultivars are not well adapted to the warm climate and fluctuating winter temperatures, where heat degrades plant vigor and fruit quality, and warm spells in mid to late winter can cause low ch...
Article
Black raspberry is a caneberry fruit recognized as a source of several phytoactive compounds. Fruit are most often used for processed products. As a specialty crop, black raspberry production is limited by its susceptibility to viruses, which reduce fruit size and yield and can kill the plant in a few years. As part of a NIFA-SCRI grant project, bl...
Article
Consumer demand for organically grown fruit continues to increase in the US. Blackberry (Rubus spp.) contains high amounts of phenolic compounds with demonstrated health benefits, and the acreage of fresh market organic blackberries continues to increase. Organically grown blackberries for fresh market use ('Natchez', 'Ouachita', and 'Navaho') were...
Article
Fruit of organically grown fresh market blackberry cultivars 'Natchez', 'Ouachita', and 'Navaho' harvested at shiny black and dull black ripeness stages were stored at 1. °C for 15 d or at 1. °C for 13 d plus 20. °C for 2 d. Berries were subjectively rated and anthocyanins and phenolic compounds were analyzed by high performance liquid chromatograp...
Article
A series of studies were conducted to better understand the occurrence and causes of internal necrosis (IN) in ‘Covington’ sweetpotato (Ipomoea batatas). Assessment of the problem among the industry was done for 2 years and revealed that IN was widespread in commercial storage facilities throughout the state of North Carolina; both incidence and se...
Conference Paper
Obesity and its co-morbidities have been associated with mitochondrial oxidative stress leading to impaired substrate oxidation. This study aimed at investigating the potential ameliorating effects of freeze-dried mango pulp supplementation on body composition, plasma lipids and mitochondrial oxidative capacity in the liver and heart of mice fed a...
Article
Full-text available
High tunnels have been widely adopted for red raspberry (Rubus idaeus) production in the United States to extend the harvest season and increase yields. In this study, effects of high tunnel production on contents of plant secondary metabolites (anthocyanins, carotenoids, tocopherols, and ellagitannins) in red raspberry fruit were determined for th...
Article
Twelve Sambucus nigra subsp. canadensis genotypes were grown at two Missouri and one Oregon (USA) locations to characterize fruit composition in 2004, 2005, and 2006. Fruit was also sampled from an additional 10 genotypes of subsp. canadensis and nigra grown in Oregon. Soluble solids content ranged from 8.9 to 12.5 °Brix, and titratable acid (as ci...
Article
Full-text available
Lycopene is a red pigment in tomato with purported antioxidant properties. As the amount of lycopene has been reported to differ in different colored tomatoes or even absent in non-red tomatoes, the objective of this study was to investigate the inheritance of lycopene content and the color parameters of hybrids using a 10 parent diallel excluding...
Article
Full-text available
This pilot study examined the effects of freeze-dried mango (Mangifera indica L.) supplementation on anthropometrics, body composition, and biochemical parameters in obese individuals. Twenty obese adults (11 males and 9 females) ages 20- to 50-years old, received 10 g/day of ground freeze-dried mango pulp for 12 weeks. Anthropometrics, biochemical...
Article
Full-text available
Over the last 75 years, the black raspberry industry in the United States has steadily declined due to lack of adapted and disease resistant cultivars. The high anthocyanin content of black raspberry and associated health benefits have revived interest in production and breeding new cultivars. The United States Department of Agriculture (USDA) Agri...
Article
Full-text available
Current medical research suggests that associations between generalized plant measurements of anti-oxidant capacity and recognized human biomarkers of disease or definitive health endpoints is inconsistent and often inconclusive. Detailed information of individual constituents of known phytochemical classes may be more informative than measurements...
Conference Paper
In North Carolina, strawberry breeding objectives are to develop cultivars suitable for the climatic conditions encountered in the USDA hardiness zones 5 to 8 (western mountains to eastern shoreline) for use with the annual plasticulture production system. The California varieties ‘Chandler’ and ‘Camarosa’ are still used for much of the short day a...
Conference Paper
Late blight caused by Phytophthora infestans is a devastating disease of tomato (Solanum lycopersicum L.). Three genes, Ph-1, Ph-2 and Ph-3, have been identified to confer resistance to this disease. Among these, a combination of Ph-2 and Ph-3 is effective to confer resistance to the available races of Phytophthora infestans. While there are some t...
Conference Paper
The pigment lycopene has been demonstrated to prevent DNA damage in skin cells. The US Food and Drug Administration monitors sunscreen products and has approved only five compounds as effective blocking agents against UVA and UVB light induced damage in skin. Unfortunately, these compounds have also been found to negatively affect coral reef health...
Conference Paper
Often, once yields are collected, it’s not clear what to do with produce from germplasm trials or production studies. Additional information can be helpful when trying to get that next manuscript published or determining the value of selections, but limits of space and time mean that data must be collected rapidly. Collection of total solids conten...
Conference Paper
Watermelon rootstocks were used with scions to determine effects on field holding quality, fresh cut quality, and composition. Watermelon fruit could be held a week in the field (attached to the vine) without loss of quality (firmness, lycopene, sugars) if grafted to interspecific squash hybrid rootstocks. Lycopene content was enhanced by 10 to 20%...
Conference Paper
Fruit and vegetable crop diversity is being encouraged in farm operations as a means to increase economic sustainability while a growing body of evidence suggests that increased consumption of fruits and vegetables reduces the risk of diet-related chronic diseases. At the confluence of these two issues rests opportunities for niche market crops suc...
Conference Paper
As part of a USDA NIFA-SCRI grant, black raspberry seedlings were planted in multiple locations in the U.S. to establish suitable germplasm for expanded processed and fresh market production. Fruit were harvested from Ohio, New York, Oregon and North Carolina. Total anthocyanin, phenolic content, soluble solids, and titratable acidity were determin...
Article
Full-text available
Background: Elderberry (Sambucus spp.) fruit are used for food and dietary supplements in Europe and North America, and contain large amounts of cyanidin-based anthocyanins and other phenolics that may benefit human health. Objectives: Information on the effect of both genotype and production environment on elderberry juice characteristics is ne...
Article
Full-text available
High-quality, high-phytonutrient watermelons [Citrullus lanatus (Thumb.), Matsum & Nakai] have strong market opportunities. To produce highly nutritious fruit in a seedless triploid market, the nature of phytonutrient accumulation as affected by ploidy must be understood. The present study performed on six field-grown watermelon diploid (2n) inbred...
Conference Paper
Watermelon is a good source of vitamin C and contains the antioxidants and anti inflammatory compounds citrulline and lycopene. Quality of watermelon fruit is a combination of firmness, full red color, sweetness, and perceived shelf life in field and market, and fresh cut watermelon also needs low drip loss. Watermelon grafting is widely used outsi...
Conference Paper
Fresh market blackberries grown organically in North Carolina were used to determine storage life and phenolic compounds profiles. 'Natchez', 'Ouachita', and 'Navaho' freshly harvested berries were sorted into shiny black (SB) and dull black (DB) ripeness stages and stored at a constant 1 °C for 15 days or at 1 °C for 13 days plus 2 days at 20 °C....
Conference Paper
Full-text available
Strenuous exercise, such as marathons, induces inflammation and oxidative stress in humans. Addition of a carbohydrate (CHO) source to liquid intake during exercise helps prevent inflammation. Watermelon contains large amounts of free water as well as sugars, some electrolytes and vitamins, lycopene, and amino acids. Watermelon juice, consisting of...
Article
The color of red tomatoes (Solanum lycopersicum L.) is mostly from the carotenoid pigment lycopene, which is of interest to consumers and the tomato industry because of its purported protective effects against diabetes, cardiovascular events, and some cancers. Lycopene content was measured in at least 179 tomato lines with pink, red, and dark red f...
Article
Watermelon in the US traditionally has been viewed as a sweet but non-nutritional fruit. Over the last ten years, we have delved into the world of watermelon to find the horticultural, genetic, and environmental linkages of compounds with demonstrated bioactivity in animal models and clinical trials. Watermelon contains large amounts of lycopene an...
Chapter
Watermelon Cantaloupe Honeydew Summary References
Conference Paper
Rubus fruits (raspberry and blackberry) generally contain high amounts of anthocyanins as the dominant pigment. Some yellow fruited raspberries contain little or no anthocyanin. Carotenoids are present in these fruits but only in tiny amounts. However, carotenoids may play an important role as precursors of flavor volatiles, especially the ionones....
Conference Paper
The composition and storage life of blackberries produced organically in North Carolina was determined for shiny (SB) and dull black (DB) ripeness stages. Subjective ratings, soluble solid content (SSC), titratable acidity (TA), total anthocyanin and phenolic contents, and antioxidant activity (FRAP) were determined in ‘Natchez’, ‘Ouachita’, and ‘N...
Conference Paper
Over the last 75 years, the black raspberry (Rubus occidentalis L.) industry in the United States has steadily declined due to a lack of adapted and disease resistant cultivars. The high anthocyanin content of black raspberry and associated health benefits have revived interest in production and breeding new cultivars. Wild black raspberries were r...
Conference Paper
Watermelon is a good source of vitamin C and contains the antioxidants and anti inflammatory compounds citrulline and lycopene. Fresh cut watermelon is used as a value added product and as a consumer-friendly fruit package. In the United States, fresh cut watermelon is often prepared in-store using deli boxes and cubes or blocks of fruit tissue. Fr...
Conference Paper
NC 430 is a new erect, thornless, floricane-fruiting blackberry. NC 430 was selected in 1998 by J. R. Ballington. Replicated trials of NC 430 were established at the Piedmont Research Station (PRS) in Salisbury, NC, in 2007 and at the Upper Mountain Research Station (UMRS) in Laurel Springs, NC, in 2009. Data was collected from 2008–2010 and 2010-2...