Abstract: Lettuce (Lactuca sativa) plants exhibiting resistance to downy mildew disease caused by Bremia lactucae are provided, together with methods of producing, identifying, or selecting plants or germplasm with a downy mildew resistance phenotype. Such plants include lettuce plants comprising introgressed genomic regions conferring pest resistance. Compositions, including novel polymorphic markers for detecting plants comprising introgressed loci, are further provided.

Abstract: The invention provides seed and plants of the lettuce line designated RX 16883035. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RX 16883035, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RX 16883035 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RX 16883035, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RS 16890990. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RS 16890990, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RS 16890990 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RS 16890990, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RS 16891364. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RS 16891364, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RS 16891364 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RS 16891364, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RS16893282. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RS16893282, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RS16893282 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RS16893282, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RX 16883035. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RX 16883035, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RX 16883035 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RX 16883035, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RS 16884606. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RS 16884606, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RS 16884606 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RS 16884606, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RS16893282. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RS16893282, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RS16893282 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RS16893282, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RS 16891364. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RS 16891364, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RS 16891364 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RS 16891364, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RS 16890990. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RS 16890990, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RS 16890990 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RS 16890990, including the gametes of such plants.

Abstract: The invention provides seed and plants of the lettuce line designated RS 16884606. The invention thus relates to the plants, seeds and tissue cultures of lettuce line RS 16884606, and to methods for producing a lettuce plant produced by crossing a plant of lettuce line RS 16884606 with itself or with another lettuce plant, such as a plant of another line. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of a plant of lettuce line RS 16884606, including the gametes of such plants.