Grafted selections of Eastern White Pine tested for resistance to blister rust.

Gives details of the growth of 1949 plantings on an island in Basswood Lake, Minnesota: 64 selections from 40 parents were compared with ungrafted controls. The grafts showed, after 6 years, a 5% infection with rust against 58% for the controls; also a high incidence of prostrate and angled forms and a greater mortality. Further study to eradicate these defects is required. KEYWORDS: Blister rust breeding \ tree breeding \ plant breeding \ resistance \ Botany general \ tree breeding \ plant breeding \ tree breeding \ plant breeding \ disease resistance \ Grafting use \ tree breeding \ plant breeding \ Pinus strobus breeding \ tree breeding \ plant breeding \ Pinus strobus diseas