Lactuca sativa cultivar solid king

A method of introducing a desired trait into lettuce cultivar Solid King wherein the method comprises:

• a) crossing a Solid King plant grown from Solid King seed, wherein a representative sample of seed was deposited under ATCC Accession No. PTA-13410, with a plant of another lettuce cultivar that comprises a desired trait to produce F1 progeny plants, wherein the desired trait is selected from the group consisting of male sterility, herbicide resistance, insect resistance, and resistance to bacterial disease, fungal disease, or viral disease;
• b) selecting one or more progeny plants that have the desired trait to produce selected progeny plants;
• c) crossing the selected progeny plants with the Solid King plants to produce backcross progeny plants;
• d) selecting for backcross progeny plants that have the desired trait and all of the physiological and morphological characteristics of lettuce cultivar Solid King listed in Table 1 to produce selected backcross progeny plants;
• and e) repeating steps (c) and (d) three or more times in succession to produce selected fourth or higher backcross progeny plants that comprise the desired trait and all of the physiological and morphological characteristics of lettuce cultivar Solid King listed in Table 1.