The influence of seed size on the performance of cereals in variety trials

Abstract

The evaluation of the genetic potential of cereal varieties in variety trials will be accurate only if compensation can be made for all the variables known to influence the results, or if those variables are controlled. The influence of one such variable, seed size, on subsequent performance of crop plants, is well documented (wheat, Kittock & Law, 1968; beans, Ries, 1971; barley, McDaniel, 1969). McFadden (1963), working with barley, felt that seed size was such an important determinant of subsequent plant performance that he suggested that seed used in comparative testing systems should all be processed to the same seed range.