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Variety traits

Watermelon sweetness

Citrullus lanatus (Thunb.) Matsum. & Nakai

An indicator of watermelon quality and ripeness, measured in degrees Brix (°Bx) as the percentage of soluble solids in the flesh.

In the reference 306 varieties crop Watermelon, where this is mentioned in the description.

To assess sweetness, refractometers are used to measure the refractive index of the fruit juice. Typical values for watermelon range from 9% to 13% Brix, with a value of 10% or higher considered the standard level of ripeness for commercial sale. It is important to note that the distribution of sugars in the fruit is non-uniform: the concentration of soluble solids is significantly higher in the center than near the edges.

Sugar accumulation depends on growing conditions, including optimal temperatures of +25°C to +30°C during the day and no lower than +18°C at night, as well as high light intensity. A key agronomic practice is to restrict irrigation a week before harvest to prevent dilution of the flesh. Sufficient potassium supply promotes efficient transport of sugars into the fruits, while the potential level of sweetness is also limited by the genetic characteristics of the variety.

General information about the subject — on the page Sugar content.

Sources8

Varieties of Watermelon mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Daphne

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
2 records

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

INTERSEMILLAS SAU

ES
2 records

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
2 records

Yellowin

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
2 records

Kalahari

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Enza Zaden Beheer B.V.

NL
3 records

Apirena

Withdrawn

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

PETOSEED CO

ES NL
2 records

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
3 records

Rossella

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Syngenta Seeds B.V.

NL
2 records

Texanita

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
3 records

Palatina

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
2 records

Phuego

Application submitted

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Nunhems Netherlands B.V.

NL
3 records

Giada

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Dr Eyal Vardi

CY
2 records

Caramelo

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

INTERSEMILLAS SAU

ES
2 records

Diamant

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
2 records

Amena

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

INTERSEMILLAS SAU

ES
2 records

Emerita

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
2 records

Ortal

Terminated

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

HAZERA (1939)

ES
2 records

Ergony

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Genome Seeds France Sasu (FR)

BG
2 records

Blackita

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
2 records

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

UNITED GENETICS SEEDS CO

PT
3 records

Mirto

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Syngenta Crop Protection AG

NL
4 records

Ataman

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Gerard Balder

UA
2 records

Rio Grande

Application submitted

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Enza Zaden Beheer B.V.

NL
3 records

Azabache

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

INTERSEMILLAS SAU

ES
2 records

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