In high yielding hybrid crop varieties, to exploit hybrid vigour, the farmers need to purchase fresh hybrid seed every year, because

Options

(a) it is cheaper to purchase fresh seed
(b) hybrid vigour is lost due to inbreeding depression
(c) they are not allowed to grow their own seed
(d) government has accepted Dunkel’s proposals

Correct Answer:

hybrid vigour is lost due to inbreeding depression

Explanation:

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