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Study of black currant genetic resources to select donors resistance to fungal diseases and for their tolerance to spring frosts

100%

Gelvonauskis B., Shikshnianas T., Duchovslcis P., Gelvonauskiene D.

Zeszyty Problemowe Postępów Nauk Rolniczych

2004

tom 497

nr 2

Black currant clones and cultivars were investigated for resistance to fungal diseases and tolerance to spring frosts. Tolerance of black currants to spring frosts was detected by using artificial freezing method. General combining ability (GCA) during three years of investigation was highly significant for all investigated parental cultivars and traits. It was noted that eleven black currant cultivars and clones differed in combining ability of resistance to fungal diseases. Resistance to American mildew (Sphaerotheca mors-uvae Berk et Curt) and septoria leaf spot (Mycosphaerella ribis Kleb) is determined by genes with additive effects. Black currant clone D16/1/-25 was proved to be a donor of resistance to American powdery mildew and septoria leaf spot. It was shown that generative organs of black currants were the most sensitive to spring frost at organogenesis stage VII. The critical temperature for flower tissues is -3°C for most investigated black currant cultivars.

Ograniczanie wyników

1 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Duchovslcis P.

1 Gelvonauskiene D.

1 Gelvonauskis B.

1 Shikshnianas T.

1 2004

Wyniki wyszukiwania

Study of black currant genetic resources to select donors resistance to fungal diseases and for their tolerance to spring frosts