Morphological features of cultivated species of Gossypium (Cotton)

By Agropedia on 17 Aug 2018 | read
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Distinguishing morphological features of cultivated species of Gossypium Linn.

S.No

Particulars

Cultivated Species of Cotton

G.hirsutum

G.barbadense

G.arboreum

G.herbaceum

1

Leaves

1/2cut or less into 3-5 lobes, not constricted, also over lapping lobes

2/3 cut into 3-5 lobes, sinuses thrown into folds, lobes long and tapering

2/3-4/5 cut into 5-7 lobes long and narrow

½ cut or less 3-7 lobes only slightly constricted at the base.

2

Bracteoles

Triangular, 4-12 long teeth

As long as broad, 10-12 acuminate teeth

Closely investing the bud and flower, entire or with fewer teeth longer than broad.

Bracteoles not investing bud, usually broader than long upper margin serrated.

3

Petal

Light yellow to yellow

Sulphur yellow, deep Yellow

White to yellow, red

Medium yellow

4

Bolls

Round to moderately tapering 3-5 locular, 4 common smooth to moderately pitted.

Tapering, longer than broad 3-4 usually 3 loculi, deeply pitted and glanded often, rough

Moderate Round to tapering, 3 to 4 loculi, 3 common smooth to deeply pitted, rough

Rounded, smaller, 3 loculi smooth to moderately pitted.

5

Seeds

Moderately large, fuzzy to rarely naked, moderate to long fibres, 5-11 seed/locule

5-8 seeds/locule, tuft of fuzz on seeds, seeds often without a coat of a fuzz, lint fibres very long, seeds free

Fuzzy, smaller rarely naked, 6-17 seeds/locule

Medium size to small fuzzy, 11 seeds/locule, short to medium fibres.

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