The inheritance of resistance to the potato cyst nematodeGlobodera pallidaPA3 in wildSolanumspecies with broad spectrum resistance

✍ Scribed by Lidwine M. W. Dellaert; Henk Vinke; Karin Meyer

• Publisher: Springer
• Year: 1988
• Tongue: English
• Weight: 787 KB
• Volume: 39
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00043373

✦ Synopsis

Summa y

A detailed study of the esistance to Globode a pallida and G . ostochiensis populations in eleven selected wild Solanum accessions showed that all the accessions had a high level of esistance to a b oad spect um of G. pallida populations . Six of the accessions showed a high level of esistance to G . ostochiensis populations as well . The othe s we e, in compa ison with the susceptible cultiva Ma itta, pa tial esistant to G . ostochiensis .

P ogenies of c osses between diffe ent esistance sou ces and between esistant clones and a pa tial esistant S. phu eja clone showed to G . pallida (pathotype Pa3) a level of esistance compa able to that of the esistant pa ent . The esistance of p ogenies of c osses between esistant (R) and susceptible (S) clones was inte mediate between that of the pa ental clones .

When the dist ibution of the Fl genotypes ove diffe ent ` esistance' classes was examined, significant diffe ences between the RxS p ogenies we e obse ved . Five g oups with diffe ent dist ibutions we e distinguished, va ying in pe centage of esistant plants f om 16 .1 to 58 .9 (s .e . 6 .5).

Significant diffe ences in esistant b eeding values we e found between clones of diffe ent accessions as well as between clones f om the same accession . Between p ogenies of ecip ocal RxS and SxR c osses no diffe ence was obse ved . I S . ve n . 8240 4 .