VIEW ARTICLE

Inheritance of Black Point Resistance in Durum Wheat. G. D. Statler, Associate Professor, Department of Plant Pathology, North Dakota State University, Fargo 58102; R. L. Kiesling(2), and R. H. Busch(3). (2)Professor, Department of Plant Pathology, North Dakota State University, Fargo 58102; (3)Associate Professor, Department of Agronomy, North Dakota State University, Fargo 58102. Phytopathology 65:627-629. Accepted for publication 10 January 1975. DOI: 10.1094/Phyto-65-627.

The green-kernel test was developed and used to test segregating populations of reciprocal Leeds × Golden Ball (durum wheat) crosses for reaction to Helminthosporium sativum. Progeny of the crosses did not fit the expected Mendelian ratios. Analyses of variance of differences in disease ratings within cultivars, between cultivars, and within segregating progeny of reciprocal crosses were calculated. The genetic variances of F₂ plants, F₃ families, backcross-F₁ plants, and backcross-F₂ families were significantly greater than the genetic variance within the parents. Disease ratings equal to those of the resistant parent, Leeds, were recovered in all segregating populations, indicating that selections for resistance to black point could be made in segregating populations.