ISHS Acta Horticulturae 585: VIII International Rubus and Ribes Symposium
HERITABILITY OF PRODUCTIVITY AND RESISTANCE TO FUNGAL DISEASE IN BLACK CURRANT |
| Authors: | T. Siksnianas, A. Sasnauskas |
| Keywords: | R. nigrum, combining ability, fungal diseases, productivity, correlation |
| Abstract:
In 1993 at the Lithuanian Institute of Horticulture 11 black currant (R. nigrum L.) cultivars and hybrids were crossed according to the topcross design. In 1996-2000 productivity and resistance to powdery mildew (Sphaerotheca mors-uvae (Schw.) Berk. et Curt.) and leaf spot (Mycosphaerella ribis Lind.) was studied in the cropping period. Additive genetic effects predominantly control heritability of productivity and resistance to fungal diseases. Non additive (dominance and epistasis) genetic effects of yield and bush height were small, but significant. Cultivars 'Titania' and 'Beloruskaja Sladkaja' transferred the best bush height and width to its progeny, whereas cvs 'Intercontinental' and 'Ben Gairn' transferred the best productivity to its progeny. Promising selection D16/1/25 is a donor for resistance to powdery mildew, cvs 'Beloruskaja Sladkaja' and 'Storklas' were donors for resistance to leaf spot, and cv. 'Titania' is a donor for complex resistance to powdery mildew and leaf spot. A strong correlation was found between resistance to powdery mildew and resistance to leaf spot. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
