Some varieties of wheat are known as spring
Question:

Some varieties of wheat are known as spring wheat while others are called winter wheat. The former variety is sown, and planted in spring and is harvested by

the end of the same season. However, winter varieties, if planted in spring, fail to flower or produce mature grains within a span of a flowering season. Explain,

why?

Solution:

If planted in spring would normally fail to flower or produce mature grain within a span of a flowering season so they are sown in autumn. Then they germinate and

seedlings come out on winter season. Some plants need an optimum temperature to flower. This is called vernalisation where low temperature is required for the

flowering.

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