Plants and seeds of hybrid corn varieties ch990556, ch827133, ch287256, ch507166, ch852208, ch831720, ch049493, ch350376, ch612304, ch787358, ch615363, ch009127, ch956058, ch023956, ch676759, ch223783, ch091903, ch180966, ch572608, ch261575, and ch653498

A converted seed of hybrid corn variety CH990556 further comprising at least one locus conversion, wherein a plant grown from the seed comprises a trait conferred by the at least one locus conversion, and wherein the seed is produced by crossing a first plant selected from the group consisting of variety CV489261 and selfed progeny thereof with a second plant selected from a second group consisting of variety CV211653 and selfed progeny thereof, wherein the first plant, the second plant, or both further comprise the at least one locus conversion, and wherein representative seeds of the varieties CV489261 and CV211653 have been deposited under NCMA Accession No. 202106019 and NCMA Accession No. ______, respectively.

A method of introducing a heritable trait into hybrid corn variety, the method comprising:

• introducing the heritable trait into a first inbred corn variety CV489261, a second inbred corn variety CV211653, or both inbred corn varieties CV489261 and CV211653 to produce plants of the inbred corn varieties that heritably carry the heritable trait, wherein the heritable trait is introduced into the inbred corn varieties by backcrossing, wherein the backcrossing is sufficient to produce an inbred corn variety further comprising the heritable trait, and
• producing a plant of hybrid corn variety CH990556 further comprising the heritable trait by crossing a plant of the first or the second inbred corn variety that heritably carries the heritable trait with a plant of a different inbred corn variety selected from a group consisting of inbred corn varieties CV489261 and CV211653, or crossing a plant of the first inbred corn variety and a plant of the second inbred corn variety that both heritably carry the heritable trait, wherein representative seeds of the varieties CV489261 and CV211653 have been deposited under NCMA Accession No. 202106019 and NCMA Accession No. ______, respectively.

A method for producing a converted seed of hybrid corn variety CH990556 further comprising at least one locus conversion, the method comprising crossing a first plant selected from the group consisting of variety CV489261 and selfed progeny thereof with a second plant selected from a second group consisting of variety CV211653 and selfed progeny thereof, wherein the first plant, the second plant, or both further comprise the at least one locus conversion, and wherein representative seeds of the varieties CV489261 and CV211653 have been deposited under NCMA Accession No. 202106019 and NCMA Accession No. ______, respectively.