Phenotypic and molecular characterization of Hessian fly resistance in diploid wheat, Aegilops tauschii

BMC Plant Biology

Table 1 Phenotypic response of Ae. tauschii wheat accessions to Hessian fly larval feeding

Accession No.	H gene^a/chromosome	No. of plants evaluated	No. of dead:live larvae	Mean no. larvae/ plant	No. of homo:het^bplants	Necrotic lesions
a) Response to biotype L
TA2452	H13/6D	15	302:73	25	6:9	P (40%)
TA1644	*H22* /1D	15	367:0	24	15:0	A
TA2473	*H26* /3D	15	284:0	19	15:0	A
TA1651	*H32* /3D	15	218:0	15	15:0	A
TA1642	*H23* /6D	15	210:0	14	15:0	A
b) Response to biotype vH13
TA2452	H13/6D	15	162:119	19	2:13	P (27%)
TA1644	H22/1D	15	205:20	15	13:2	P (33%)
TA2473	*H26* /3D	10	174:0	17	10:0	A
TA1651	*H32* /3D	15	186:0	12	15:0	A
TA1642	H23/6D	8	97:31	16	3:5	P (38%)

homo homozygous resistant, het heterozygous, P present, A absent
^adonor for Hessian fly resistance (H) gene and chromosome mapped to
^bplants were counted as het if they had both dead and live larvae
Numbers in parentheses represent percent plants showing presence of necrotic lesions on leaf surface
Bold font indicates 100% homozygous resistant lines

ISSN: 1471-2229