Sweet corn is a warm-season vegetable that can be grown easily
in any garden with sufficient light, fertility, growing season and
space. It is especially popular with home gardeners because it tastes
appreciably better when it is harvested and eaten fresh from the
garden. Successive plantings can yield continual harvests from early
summer until frost if the weather cooperates.
Sweet corn may be divided into three distinct types according to
genetic background: normal sugary (SU), sugary enhancer (SE) and
supersweet (Sh2).
Standard sweet corn varieties contain a "sugary (SU) gene"
that is responsible for the sweetness and creamy texture of the
kernels. SUs are best suited to being picked, husked and eaten within
a very short time. In the home garden, this is sometimes possible
but not always practical. The old adage was "start the water
boiling, run to the patch, pick and husk the corn, run back to the
pot, cook the corn, and eat or process immediately."
Sugary enhancer hybrids contain the sugary enhancer (SE) gene,
that significantly raises the sugar content above standard SUs while
retaining the tenderness and creamy texture of standard varieties.
The taste, tenderness and texture are outstanding. SEs are the gourmet
corns of choice for home gardeners because they contain the best
qualities of both SU and Sh2 types. Fresh from the garden, virtually
all current SE releases have eating quality that is superior to
all other types. No isolation from standard SUs is necessary.
Supersweet hybrids contain the shrunken -2 gene and have a higher
sugar content than the standard SU varieties. The kernels of the
extra-sweet varieties have a crispy, tough-skinned texture and contain
low amounts of the water-soluble polysaccharides that impart the
creamy texture and "corny" flavor to other sweet corn
varieties. Although the lack of creamy texture is not especially
noticeable in fresh corn on the cob, it affects the quality of frozen
and canned corn, as does the toughness of the seed coat. Unless
corn must be stored, shipped or mechanically harvested, SEs are
superior in eating quality to Sh2s.
Supersweets (Sh2) should be isolated from any other type of corn
tasseling at the same time to ensure sweetness and tenderness. Their
pollen is weak and easily supplanted by other types, which causes
the kernel to revert to a form with the toughness and starchiness
of field corn. Because corn is wind-pollinated, this isolation distance
can be 500 feet or more, especially downwind.
Nutritional Value & Health Benefits
Sweet corn is high in fiber, niacin, folate and some vitamin A.
Folate has been found to prevent neural-tube birth defects and current
research suggests that it helps to reduce the risk of heart disease
and stroke. Fiber, of course, helps to keep the intestinal track
running smoothly.
Nutrition Facts (Serving size: 1 ear yellow sweet corn )
Calories 83.16
Protein 2.56 grams
Carbohydrates 19.3 grams
Dietary Fiber 2.15 grams
Potassium 191.73 mg
Vitamin A 167 IU
Niacin 1.24 mg
Folate 35.73 mcg
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