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Photoperiodism was first characterised in
A
Cotton
B
Tobacco
C
Potato
D
Tomato
Detailed Solution
Photoperiodism is the response of plants to the relative lengths of day and night, especially in flowering.
It was first described by Garner and Allard (1920) in the 'Maryland Mammoth' variety of tobacco.
This variety did not flower in summer, however vigorously it grew, but flowered when the days were short; it was the first short-day plant to be recognised.
Hence photoperiodism was first characterised in tobacco.
It was first described by Garner and Allard (1920) in the 'Maryland Mammoth' variety of tobacco.
This variety did not flower in summer, however vigorously it grew, but flowered when the days were short; it was the first short-day plant to be recognised.
Hence photoperiodism was first characterised in tobacco.