"This research provides data on the nutritional content of broccoli for breeders to consider as they further improve this important vegetable," said Edward B. Knipling, administrator of the Agricultural Research Service (ARS), USDA's principal intramural scientific research agency. "The research demonstrates how ARS is helping to find answers to agricultural problems that impact Americans every day, from field to table."
A team of three scientists evaluated the mineral content of 14 broccoli cultivars released over a span of more than 50 years: ARS geneticist and research leader Mark Farnham at the agency's U.S. Vegetable Laboratory in Charleston, S.C.; plant physiologist Michael Grusak at the USDA-ARS Children's Nutrition Research Center (CNRC) in Houston, Texas; and Clemson University scientist Anthony Keinath.
The researchers grew the 14 cultivars in two field trials in 2008 and 2009, and harvested florets for testing.
"Our studies show that not much has changed in terms of mineral content in the last 35 years in a crop that has undergone significant improvement from a quality standpoint and that was not widely consumed in the United States before the 1960s," said Farnham.
Broccoli florets in the study were tested for levels of calcium, copper, iron, potassium, magnesium, manganese, molybdenum, sodium, phosphorous, sulfur and zinc. Results indicated significant cultivar differences in floret concentrations of calcium, copper, iron, magnesium, sodium, phosphorous and zinc, but not of potassium, manganese, molybdenum or sulfur. There was no clear relationship between mineral concentration and release year.
"For broccoli cultivars grown during the past 35 years, when hybrids became the standard cultivar, evidence indicates that mineral concentrations remain unchanged," said Farnham. "As broccoli breeders continue to improve this crop in the future, data from this study can serve as a very useful guide in helping breeders understand the variation in mineral concentrations they should expect among their breeding stocks and also provide a realistic baseline that should be maintained as other characteristics are manipulated in the future."
As USDA's chief scientific research agency, ARS is leading America toward a better future through agricultural research and information. ARS conducts research to develop and transfer solutions to help answer agricultural questions that impact Americans every day. ARS work helps to:• Ensure high-quality, safe food and other agricultural products;
Redefining the future of cattle breeding
17.09.2019 | Leibniz-Institut für Nutzierbiologie (FBN)
Breeders release new flaxseed cultivar with higher yield
11.09.2019 | American Society of Agronomy
Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Hamburg and the European Molecular Biology Laboratory (EMBL) outstation in the city have developed a new method to watch biomolecules at work. This method dramatically simplifies starting enzymatic reactions by mixing a cocktail of small amounts of liquids with protein crystals. Determination of the protein structures at different times after mixing can be assembled into a time-lapse sequence that shows the molecular foundations of biology.
The functions of biomolecules are determined by their motions and structural changes. Yet it is a formidable challenge to understand these dynamic motions.
At the International Symposium on Automotive Lighting 2019 (ISAL) in Darmstadt from September 23 to 25, 2019, the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, a provider of research and development services in the field of organic electronics, will present OLED light strips of any length with additional functionalities for the first time at booth no. 37.
Almost everyone is familiar with light strips for interior design. LED strips are available by the metre in DIY stores around the corner and are just as often...
Later during this century, around 2060, a paradigm shift in global energy consumption is expected: we will spend more energy for cooling than for heating....
Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Potsdam (both in Germany) and the University of Toronto (Canada) have pieced together a detailed time-lapse movie revealing all the major steps during the catalytic cycle of an enzyme. Surprisingly, the communication between the protein units is accomplished via a water-network akin to a string telephone. This communication is aligned with a ‘breathing’ motion, that is the expansion and contraction of the protein.
This time-lapse sequence of structures reveals dynamic motions as a fundamental element in the molecular foundations of biology.
Two research teams have succeeded simultaneously in measuring the long-sought Thorium nuclear transition, which enables extremely precise nuclear clocks. TU Wien (Vienna) is part of both teams.
If you want to build the most accurate clock in the world, you need something that "ticks" very fast and extremely precise. In an atomic clock, electrons are...
10.09.2019 | Event News
04.09.2019 | Event News
29.08.2019 | Event News
18.09.2019 | Innovative Products
18.09.2019 | Physics and Astronomy
18.09.2019 | Materials Sciences