Effects of stacked quantitative resistances to downy mildew in lettuce do not simply add up

Abstract

In a stacking study of eight resistance QTLs in lettuce against downy mildew, only three out of ten double combinations showed an increased resistance effect under field conditions. Complete race nonspecific resistance to lettuce downy mildew, as observed for the nonhost wild lettuce species Lactuca saligna, is desired in lettuce cultivation. Genetic… (More)
DOI: 10.1007/s00122-014-2342-7

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