HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (6) Citing Articles via Google Scholar Google Scholar Articles by Udall, J. A. Articles by Osborn, T. C. Search for Related Content PubMed Articles by Udall, J. A. Articles by Osborn, T. C. Agricola Articles by Udall, J. A. Articles by Osborn, T. C. Related Collections Crop Genetics Canola

CROP BREEDING, GENETICS & CYTOLOGY

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

^* Corresponding author (tcosborn{at}facstaff.wisc.edu)

The seed yields of hybrid spring canola (Brassica napus L.) could be improved by introducing favorable alleles from unadapted germplasm. Two sources of unadapted germplasm, a Chinese winter cultivar, Hua-dbl2, and a resynthesized B. napus line derived from a cross between B. rapa cv. Reward and rapid cycling B. oleracea L., were crossed to the male parent of a hybrid combination. From both crosses, a segregating population of doubled haploid (DH) lines was created by microspore culture. DH lines were evaluated per se (2 yr in Wisconsin, USA) and in testcrosses to the female parent of the hybrid combination (2 yr in Wisconsin, USA, and 1 or 2 yr in Saskatchewan, Canada). Many of the testcrosses had significantly higher seed yields than the starting hybrid combination in both the Wisconsin and Saskatchewan environments. Some of the testcross lines had significantly higher seed yields than all of the commercial hybrid checks included in the trial. These results indicate that the seed yield of spring canola hybrids may be improved through introgression of novel alleles residing within these unadapted germplasms. The populations developed for this study can be used to map loci for which alleles from the unadapted parent increase seed yield of spring canola hybrids.

Abbreviations: DH, doubled haploid • OP, open-pollinated

This article has been cited by other articles:

				T. C. Osborn, C. Kramer, E. Graham, and C. J. Braun Insights and Innovations from Wide Crosses: Examples from Canola and Tomato Crop Sci., December 18, 2007; 47(Supplement_3): S-228 - S-237. [Abstract] [Full Text] [PDF]

				P. A. Quijada, J. A. Udall, H. Polewicz, R. D. Vogelzang, and T. C. Osborn Phenotypic Effects of Introgressing French Winter Germplasm into Hybrid Spring Canola Crop Sci., November 1, 2004; 44(6): 1982 - 1989. [Abstract] [Full Text] [PDF]