Variety traits
Sugar content is an indicator of the concentration of natural sugars in fruits or root crops, determining nutritional value and suitability for processing. This genetic trait is measured in degrees Brix (°Brix) or sugar degrees (°Z) and is critical for assessing variety quality.
Mentioned in descriptions 14 616 varieties reference book.
Sugar content characterizes the concentration of glucose, fructose, and sucrose in plant tissues. For the processing industry, this indicator is a key requirement determining the yield of the finished product, whereas for table crops, it shapes the flavor balance in combination with acidity. A variety's ability to accumulate sugars promptly also allows for effective planning of harvest dates and production facility capacity.
Sugar content is measured using laboratory and field methods. Refractometry allows for the assessment of solids content in degrees Brix, polarimetry determines sucrose concentration in international sugar degrees, and areometry establishes the indicator by measuring juice density. The choice of method depends on the crop and the objectives of the analysis, whether for express assessment or establishing the commercial value of raw materials.
The realization of the genetic potential for sugar content depends on environmental conditions and agrotechnics. Light intensity and the sum of active temperatures, which determine the intensity of photosynthesis, have a significant influence, as do moisture availability and mineral nutrition, particularly potassium supply. During variety trials, breeding material is compared with standards, which allows for the identification of varieties with high stability of sugar accumulation under various climatic conditions.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Vitis vinifera L. · Common grape vine
Galina Dyakova, Ralitsa Mincheva
Vitis vinifera L. · Common grape vine
MINCHO GUENCHEV KONDAREV
Beta vulgaris Sugar Beet Group · Sugar beet
G.WESTERN SUGAR
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Viburnum opulus L. · Guelder rose
TYKHYI TARAS
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Malus domestica (Suckow) Borkh. · Apple
Alojzij Mustar
Vitis vinifera L. · Common grape vine
José Ignacio Fernández Fernández/Leonor Ruiz García/María Rocío Gil Muñoz/ Celia Martínez Mora/Juan Antonio Bleda Sánchez/Adrián Martínez Cutillas
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Vitis vinifera L. · Common grape vine
Dimitar Mitev, Zdravko Zankov, Ivan Todorov
Vitis vinifera L. · Common grape vine
Vasil Valchev, Georgi Petkov, Yordan Ivanov
Vitis vinifera L. · Common grape vine
Kalashnikov IUrii Mykolaiovych, Timukin IUrii Oleksandrovych, Yatskov Viktor Mykhailovych, Yurchenko Volodymyr IUriiovych, Kostik Mariia Antonivna, Holodryha Pavlo IAkovych,
Beta vulgaris Sugar Beet Group · Sugar beet
DLF BEET SEED A.P.S.
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Solanum lycopersicum L. · Tomato
Sakata Seed Corporation, JP
Solanum lycopersicum L. · Tomato
Harmoniz
Beta vulgaris Sugar Beet Group · Sugar beet
SES ITA
Beta vulgaris Sugar Beet Group · Sugar beet
DLF BEET SEED A.P.S.
Beta vulgaris Sugar Beet Group · Sugar beet
MariboHilleshog ApS
Beta vulgaris Sugar Beet Group · Sugar beet
SES ITA
Vitis vinifera L. · Common grape vine
José Ignacio Fernández Fernández/Leonor Ruiz García/María Rocío Gil Muñoz/Diego José Fernández /María José Giménez Bañón/Juan Daniel Moreno Olivares/Celia Martínez Mora/Juan Antonio Bleda Sánchez/Adrián Martínez Cutillas
Prunus persica (L.) Batsch · Peach
Grand Merrill (dcd) Mme Lucille Merrill (US)
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Cucurbita moschata Duchesne · Butternut squash
Domaine Public (FR)