Wheat variety yield data : do commercial and public performance tests provide the same information?
Nti, F.K.
Wheat variety yield data : do commercial and public performance tests provide the same information? - Amsterdam (Netherlands) : IAAE : Wiley, 2017.
Peer review
Wheat yields from reported performance test results are of economic importance to wheat producers, since their profits depend on selecting the optimal variety for their location. However, our data shows differences in absolute and relative wheat yields between commercial and public wheat breeding program's performance test data in Kansas. Newly available data are used to test if the difference in yields arose from potential selectivity bias, and to determine the contribution of private and public wheat breeding programs to varietal yield improvement during 2007–2012. Both Heckman selection models and multiple regression showed no statistical evidence of the potential presence of selectivity bias rather, managerial practices, agronomic conditions, field location, and inherent genetic traits of the seed variety were identify as the source of yield differences.
Text in English
0169-5150 1574-0862 (Online)
https://doi.org/10.1111/agec.12333
Selection
Wheat
Plant breeding
Experimentation
Performance testing
Wheat variety yield data : do commercial and public performance tests provide the same information? - Amsterdam (Netherlands) : IAAE : Wiley, 2017.
Peer review
Wheat yields from reported performance test results are of economic importance to wheat producers, since their profits depend on selecting the optimal variety for their location. However, our data shows differences in absolute and relative wheat yields between commercial and public wheat breeding program's performance test data in Kansas. Newly available data are used to test if the difference in yields arose from potential selectivity bias, and to determine the contribution of private and public wheat breeding programs to varietal yield improvement during 2007–2012. Both Heckman selection models and multiple regression showed no statistical evidence of the potential presence of selectivity bias rather, managerial practices, agronomic conditions, field location, and inherent genetic traits of the seed variety were identify as the source of yield differences.
Text in English
0169-5150 1574-0862 (Online)
https://doi.org/10.1111/agec.12333
Selection
Wheat
Plant breeding
Experimentation
Performance testing