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Inheritance of Resistance to Stem Rust in Six Durum Wheats 1
Author(s) -
Weeraratne Hector,
Williams N. D.
Publication year - 1971
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1971.0011183x001100060046x
Subject(s) - biology , stem rust , backcrossing , gene , cultivar , seedling , resistance (ecology) , epistasis , botany , poaceae , genetics , triticum turgidum , horticulture , agronomy
We studied the inheritance of resistance to culture 111‐SS2 of Puccinia graminis Pers. f. sp. tritici Eriks. & E. Henri. in six tetraploid wheats ( Triticum turgidum L .). Seedling reaction was determined in the backcross‐F 2 and F 3 from crosses of six resistant wheats with the susceptible cultivar ‘Marruecos 9623.’ Three dominant genes conditioned resistance in each of the strains ‘C.I. 7805,’ ‘Acme,’ and ‘Beladi 116.‘ Two dominant genes and one recessive gene conditioned resistance in each of the cultivars ‘Arnautka’ and ‘Tremez Preto.’ Tremez Rijo had one dmninant and one recessive gene for resistance. Genes conditioning low infection types were epistatic to those conditioning high infection types. Lines having single genes for resistance were selected for each of the genes for resistance in Acme and ‘Tremez Rijo.’