Effects of Recurrent Selection for Grain Yield on Oat Kernel Morphology

Kernel size, as it is related to kernel weight, is an important yield component in oat (Avena sativa L.). The main objective of our research was to evaluate the changes in kernel morphology following five cycles of recurrent selection for grain yield. Parents of Cycles 0, 1, 3, and 5 and seven check cultivars were grown in row and hill plots at St. Paul and Rosemount, MN, in 1989. Kernel area, perimeter, length, and width were measured on 100-kernel samples from each plot using digital image analysis (DIA). Grain yield, kernel weight, and kernel number were also evaluated in these experiments [...]