HORTICULTURE SCIENCE
PLANT BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Many plants prevent the growth of other competing plants in their habitats by releasing natural herbicides. These substances are known as allelochemicals. Allelochemicals can alter growth and enzyme action, injure the outer covering of a seed, or stimulate seed growth at inappropriate times of the year. How could people create biotechnology that uses allelochemicals to improve the yield of agricultural crops?
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The chemicals could be used as a biological weed control.
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The chemicals could be used to encourage cross-pollination.
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The chemicals could be used to stimulate crop growth year round.
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The chemicals could be used as a natural plant fertilizer.
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Explanation:
Detailed explanation-1: -Allelopathy, also called the interaction effect, means that chemical substances produced by certain plants then affect the growing development of other plants2. Allelochemicals can stimulate or inhibit the germination or/and growth of plants, and increase the resistance of crops to biotic and abiotic stress.
Detailed explanation-2: -These allelochemicals act as natural insecticides, fungicides, and herbicides. These allelochemicals act as defense mechanism for Zea mays against numerous pathogens and pests [62]. According to research report, plants belonging to family Poaceae, Acanthaceae, Ranunculaceae, and Scrophulariaceae release benzoxazinoids.
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