Genetics of two mechanisms of resistance to Meloidogyne naasi (FRANKLIN) in an Aegilops variabilis Eig. accession

Autor:	F. Person-Dedryver, M. Q. Yu, J. Jahier
Rok vydání:	1991
Předmět:	Larva biology Plant Science Horticulture biology.organism_classification Meloidogyne naasi Nematode Meiosis Aegilops Botany Genetics Root-knot nematode Poaceae PEST analysis Agronomy and Crop Science
Zdroj:	Euphytica. 58:267-273
ISSN:	1573-5060 0014-2336
DOI:	10.1007/bf00025259
Popis:	Accession No. 1 of Aegilops variabilis has complete resistance to the root knot nematode, Meloidogyne naasi. F2 segregation in a cross between this and two susceptible accessions showed that one dominant gene named Rkn-mn1 prevented development of galls on the roots and consequently of female nematodes. The study of the numbers of females in galls on the F2 plants allowed detection of a recessive gene, Rkn-mnAv, suppressing development of J2 larvae into females. The presence of Rkn-mnAv also resulted in a decrease of the level of galling. Rkn-mn1 has already been introduced into wheat. The interest in transferring also Rkn-mnAv is discussed in relation to extending durability of the nematode resistance.
Databáze:	OpenAIRE
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