The sweet orange reproduces asexually ( apomixis through nucellar embryony ); varieties of sweet orange arise through mutations.
2.
Nucellar embryony is important to the citrus industry, as it allows for the production of uniform rootstock which yields consistent results in fruit production.
3.
In some plants, the diploid tissue of the nucellus can give rise to the embryo within the seed through a mechanism of asexual reproduction called nucellar embryony.
4.
In " adventitious embryony " ( sporophytic apomixis ), an embryo is formed directly ( not from a gametophyte ) from nucellus or integument tissue ( see nucellar embryony ).
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