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Interrelationships among Wheat Genes H3 , H6 , H9 , and H10 for Hessian Fly Resistance 1
Author(s) -
Stebbins Nancy B.,
Patterson F. L.,
Gallun R. L.
Publication year - 1982
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/cropsci1982.0011183x002200050032x
Subject(s) - biology , genetics , gene , backcrossing , chromosome , common wheat , gene mapping , botany
The resistance of ‘Elva’ wheat, CI 17714, ( Triticum turgidum L. durum group) to biotype D of Hessian fly [ Mayetiola destructor (Say)] was studied at the tetraploid and hexaploid chromosome levels at 20C. In testcross analysis at the tetraplold level, Elva wheat has two independent dominant genes that confer resistance to biotype D of Hessian fly. A backcross breeding scheme to common wheat (Purdue 5517 sel./2/‘Monon’/Elva) generated three resistant F 4 common wheat selections, 812‐24 (named ‘Stella’), 817‐2, and 822‐34 (named ‘Ella’). Prior research showed Stella and sel. 817‐2 have two linked partially dominant genes 36 map units apart (designated H9 and H10 ). Ella has the H9H9 gene pair. The linked genes were separated using a BC 1 test‐cross of Stella. Ella ( H9H9 ) was used in crosses to distinguish lines derived from Stella that have the H9H9 or H10H10 gene pair. Ella was used in a similar manner with 817‐1 selections (817‐1 is a F 4 sister line of 817‐2 but 817‐1 was heterozygous for reaction) to identify lines of 817‐1 that have the H9H9 or HIOHIO gene pair. Repulsion phase F 3 line analysis revealed that H9 and HIO were independent. The H6 gene (in ‘Caldwell’) was found linked 2.02 ± 2.01 map units from H9 (in Ella). Thus the gene order on chromosome 5A wheat most likely is H3, H6, H9 .