● There are plants for which flowering is either `color{violet}"quantitatively or qualitatively dependent"` on exposure to `color{violet}"low temperature"`.
● This phenomenon is termed `color{Brown}"vernalisation"`.
● It prevents `color{violet}"precocious reproductive development"` late in the growing season, and enables the plant to have `color{violet}"sufficient time"` to reach maturity.
● Vernalisation refers specially to the `color{violet}"promotion of flowering"` by a period of `color{violet}"low temperature"`.
● Some important food plants, `color{violet}"wheat, barley, rye"` have two kinds of varieties: `color{Brown}"winter and spring varieties"`. The ‘spring’ variety are normally `color{violet}"planted in the spring"` and come to flower and produce grain before the end of the growing season.
● `color{violet}"Winter varieties"`, however, if planted in spring would normally `color{violet}"fail to flower "`or produce mature grain within a span of a flowering season.
● Hence, they are `color{violet}"planted in autumn"`.
● They `color{violet}"germinate, and over winter"` come out as small seedlings, resume growth in the spring, and are `color{violet}"harvested usually around"` `color{violet}"mid-summer"`.
● Another example of vernalisation is seen in `color{violet}"biennial plants"`.
● Biennials are `color{violet}"monocarpic plants"` that normally `color{violet}"flower and die"` in the second season.
● `color{violet}"Sugar beet, cabbages"`, `color{violet}"carrots"` are some of the common biennials.
● Subjecting the growing of a `color{violet}"biennial plant to a cold treatment"` stimulates a subsequent `color{violet}"photoperiodic flowering response"`.
● There are plants for which flowering is either `color{violet}"quantitatively or qualitatively dependent"` on exposure to `color{violet}"low temperature"`.
● This phenomenon is termed `color{Brown}"vernalisation"`.
● It prevents `color{violet}"precocious reproductive development"` late in the growing season, and enables the plant to have `color{violet}"sufficient time"` to reach maturity.
● Vernalisation refers specially to the `color{violet}"promotion of flowering"` by a period of `color{violet}"low temperature"`.
● Some important food plants, `color{violet}"wheat, barley, rye"` have two kinds of varieties: `color{Brown}"winter and spring varieties"`. The ‘spring’ variety are normally `color{violet}"planted in the spring"` and come to flower and produce grain before the end of the growing season.
● `color{violet}"Winter varieties"`, however, if planted in spring would normally `color{violet}"fail to flower "`or produce mature grain within a span of a flowering season.
● Hence, they are `color{violet}"planted in autumn"`.
● They `color{violet}"germinate, and over winter"` come out as small seedlings, resume growth in the spring, and are `color{violet}"harvested usually around"` `color{violet}"mid-summer"`.
● Another example of vernalisation is seen in `color{violet}"biennial plants"`.
● Biennials are `color{violet}"monocarpic plants"` that normally `color{violet}"flower and die"` in the second season.
● `color{violet}"Sugar beet, cabbages"`, `color{violet}"carrots"` are some of the common biennials.
● Subjecting the growing of a `color{violet}"biennial plant to a cold treatment"` stimulates a subsequent `color{violet}"photoperiodic flowering response"`.