Tag Archives: interspecific hybrids

367-370 T. Siksnianas, V. Stanys, G. Stanienė, C. Bobinas,A. Sasnauskas and R. Rugienius
Resistance to fungal diseases of interspecific currant hybrids of Eucoreosma section
Abstract |

Resistance to fungal diseases of interspecific currant hybrids of Eucoreosma section

T. Siksnianas, V. Stanys, G. Stanienė, C. Bobinas,A. Sasnauskas and R. Rugienius

Lithuanian Institute of Horticulture, Babtai LT-4335, Kaunas distr., Lithuaniae-mail: a.sasnauskas@lsdi.lt

Abstract:

Interspecific hybridisation in genus Ribes is one of the most effective methods fordeveloping resistant cultivars. Plants of R. nigrum x R. pauciflorum, R. nigrum x R. ussuriense, R. nigrum x R. Janczewskii (F1) were obtained directly after interspecifichybridization of currant. Hybrids of R. nigrum × R. americanum and R. americanum x R. nigrum (F1 – F3) were obtained after interspecific hybridization and embryo rescue in vitro.Fertile plants were found in all crosses. 20.0–52.3% of hybrids in F1 were resistant to powderymildew. In crosses of R. nigrum x R. pauciflorum, R. nigrum x R. Janczewskii 2–5% of plants were undamaged by Septoria leaf spot. Plant fertility of hybrids R. nigrum × R. americanum and R. americanum x R. nigrum was very low in F1 and increased in F2 and F3. There wereresistant plants in all families of hybrids obtained by reciprocal crosses, but resistance level of hybrids with R. americanum cytoplasm was considerably higher. The resistance to fungal diseases of some hybrids in F3 generation was higher than R. nigrum and equal to R. americanum.

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