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Phenotypic Effects of Introgressing Chinese Winter and Resynthesized Brassica napus L. Germplasm into Hybrid Spring Canola

^a Dep. of Botany, Bessey Hall, Iowa State University, Ames IA 50011
^b Dep. of Agronomy, 1575 Linden Dr., Univ. of Wisconsin-Madison, Madison, WI 53706
^c Bayer CropScience, 407 Downey Road, Saskatoon, SK S7N4L8, Canada

View larger version (37K): [in a new window]   Fig. 1. Frequency distributions of least-square means for seed yield of doubled haploid (DH) lines from two populations (HUA and SYN) grown in Wisconsin and their testcross progenies (T x HUA and T x SYN) grown in Saskatoon and WI during 1999, 2000, and 2001. The arrows indicate the positions of the tester (T), parents of the DH lines (C = RV289, S = TO1147, and P = 1804), the starting hybrid (T x P), the open-pollinated (OP) and hybrid (H) cultivars, and the overall mean (M) of each population. Horizontal lines below each histogram indicate the LSD at the 0.05 probability level. The left side of the bar is positioned at the seed yield of P in the distributions of DH lines. The left side of the bars is positioned at the seed yield of T x P in the distributions of testcrosses. No data were recorded for P during WI1999.