Patent 9554550 was granted and assigned to Rijk Zwaan on January, 2017 by the United States Patent and Trademark Office.
The present invention relates to a Lactuca sativa seed designated 45-158 RZ, which may exhibit a combination of traits including resistance to downy mildew (Bremia lactucae) races B1:1 to B1:31 and CA-I to CA-VIII, currant lettuce aphid (Nasonovia ribisnigri) biotype Nr:0, root aphids (Pemphigus bursarius), as well as having a medium head size, large outer leaves, and moderately glossy leaves. The present invention also relates to a Lactuca sativa plant produced by growing the 45-158 RZ seed. The invention further relates to methods for producing the lettuce cultivar, represented by lettuce variety 45-158 RZ.