A cereal cyst nematode (Heterodera avenae Woll.) resistance gene transferred from Aegilops triuncialis to hexaploid wheat

被引：0

作者：

M. D. Romero

M. J. Montes

E. Sin

I. Lopez-Braña

A. Duce

J. A. Martín-Sanchez

M. F. Andrés

A. Delibes

机构：

[1] Centro de Ciencias Medioambientales,

[2] C.S.I.C. Serrano 115,undefined

[3] Madrid,undefined

[4] E-28006,undefined

[5] Spain,undefined

[6] Departamento de Biotecnologia,undefined

[7] E.T.S. Ingenieros Agrónomos,undefined

[8] UPM,undefined

[9] Madrid,undefined

[10] E-28040,undefined

[11] Spain Fax: +913365757 E-mail: brana@bit.etsia.upm.es,undefined

[12] Centre R+D de Lleida,undefined

[13] UdL-IRTA,undefined

[14] Alcalde Rovira Roure 177,undefined

[15] Lleida,undefined

[16] E-25006,undefined

[17] Spain,undefined

来源：

Theoretical and Applied Genetics | 1998年 / 96卷

关键词：

Key words Aegilops triuncialis; Triticum aestivum; Heterodera avenae; Cereal cyst nematode; Resistance gene;

D O I：

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中图分类号：

学科分类号：

摘要：

The cereal cyst nematode (Heterodera avenae) is an important root parasite of common wheat. A high level of resistance was transferred to wheat from Aegilops triuncialis (TR lines) using the cross [(T. turgidum×Ae. triuncialis)×T. aestivum]. Low fertility (3–5 viable kernels per plant) was observed during the process but the surviving hybrid plants were highly vigorous. To obtain stable resistant lines further crosses to T. aestivum were performed. The resistance in TR lines seems to be transferred from the C genome of Ae. triuncialis (genomes CCUU). Ae. triuncialis was highly resistant to the two Spanish populations of H. avenae tested, as well as to four French races and two Swedish populations. The histological analysis showed a hypersensitive reaction in the roots of a resistant TR line inoculated with the Ha71 pathotype of H. avenae, whereas well-formed syncytia were observed in the roots of the susceptible control. Resistance to the H. avenae Ha71 pathotype seemed to be inherited as determined by a single dominant factor in the crosses between resistant TR lines and susceptible cultivars.

引用

页码：1135 / 1140

页数：5