Patent ID: 6069302
Filing Date: 2000-05-30
Classification: A01H,C12Q

Abstract:
A method for producing a hybrid oilseed Brassica napus, the method comprising the steps of:(a) crossing an oilseed B. napus line that comprises germplasm derived from at least one winter line but which has a spring growth habit with at least one tester line which has a spring growth habit to produce hybrid plants;(b) harvesting seeds from the hybrid plants;(c) growing plants from the seeds of step (b);(d) harvesting seeds from the plants of step (c);(e) evaluating yield of the seeds of step (d); and(f) selecting from the hybrid plants of step (b) a hybrid having an average seed yield reproducibly higher in more than one growing season than hybrids derived only from spring lines having no winter germplasm that went into the hybrids of step (a).