Genetic Improvements in the Structure of Oat Stands in Northern Growing Conditions during this Century

摘要

AbstractThe changes of morphological properties of 13 Finnish oat varieties released between 1921 and 1988 and 13 Hankkija's breeding lines were evaluated in field trials. Twenty‐two characteristics of oat stands were measured. The relationship between years of cultivar release and characteristics of oats was studied by using the linear regression analyses and Spearman's rank correlation analyses.In both years of experiment there was a significant positive linear relationship between year of cultivar release and size and weight of the flag leaf, and mean panicle filling rate. The correlation was significant, but negative between year of release of cultivar and plant height. Also other relationships arc discusse