|Busch, Robert - Bob|
Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract only
Publication Acceptance Date: 10/24/1997
Publication Date: N/A
Citation: Interpretive Summary:
Technical Abstract: Double haploids in wheat (Triticum aestivum L.) are produced mainly through anther culture and maize pollination. These techniques allow the development of homozygous lines from crosses more rapidly than most conventional breeding methods. We compared the performance of lines derived from the F1 of 'Chris'/MN7529, a tall crossed to a semidwarf, by anther culture (AC), maize pollination (MP), and single seed descent (SSD) Grain yield, test weight, kernel weight, plant height, heading date, and grain protein were evaluated in six environments. The methods of line derivation did not interact with environments except for grain yield, indicating that methods performed similarly in all environments. Over environments, the mean of SSD-lines was higher than the means of MP-lines and AC-lines for grain yield and plant height, and higher than the mean of AC-lines for kernel weight. The AC-lines were later in heading date those from other methods. Methods did not differ for grain protein and test weight. The AC-lines had the greatest genetic variance for all traits except for plant height. The best five high-yielding lines from each method did not differ in grain yield, but none exceeded the high yielding parent, MN7529. Lines derived by AC and MP performed similarly to those developed by SSD except for grain yield and plant height. Lines with acceptable performance were found using each method of line derivation.