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  • In many citrus fruits, poly-embryonic seed formation takes place where one or two nucellar cells start growing as embryos along with the zygotic embryo. As a result, seed

In many citrus fruits, poly-embryonic seed formation takes place where one or two nucellar cells start growing as embryos along with the zygotic embryo. As a result, seed germinates to give rise to as many as two or three plantlets. If one wants to grow the plant with same characteristics of fruit from which the seed is obtained, which of the plantlets can be used?

 

Option: 1

The one from the zygotic embryo is the best choice as it has hybrid vigour.


Option: 2

The nucellus embryo plantlet as it is a clone of the mother plant.


Option: 3

As there will be competition for survival among the three plantlets, the most healthy and largest in size is the best choice.


Option: 4

Any of the three as all will have the same phenotypes. 


Answers (1)

best_answer

In the case of poly-embryonic seed formation in citrus fruits, where multiple embryos develop within a single seed, the nucellus embryo plantlet can be used to grow a plant with the same characteristics as the mother plant.

The nucellus embryo is derived from the maternal tissue, specifically the nucellus, rather than the fertilization process. Therefore, it is genetically identical or very similar to the mother plant, making it a clone. By using the nucellus embryo plantlet, you can ensure that the resulting plant will have the same characteristics as the fruit from which the seed was obtained.

In contrast, the zygotic embryo is the result of fertilization and contains genetic material from both the male and female parents. It may not have the same characteristics as the mother plant, as genetic variation can occur due to genetic recombination during fertilization.

Therefore, if you want to grow a plant with the same characteristics as the fruit from which the seed is obtained in the case of poly-embryonic citrus fruits, it is preferable to use the nucellus embryo plantlet. Hence, the correct answer is option 2. 

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Nehul

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