Resistance of Sweet Potato to Virus Complex1
Open Access
- 1 August 1981
- journal article
- Published by American Society for Horticultural Science in HortScience
- Vol. 16 (4) , 535-537
- https://doi.org/10.21273/hortsci.16.4.535
Abstract
A core-graft transmission method has been used successfully for rapid screening of sweet potato (Ipomoea batatas (L.) Lam) for resistance to sweet potato virus complex (SPVD). Field test scores of resistance to SPVD were significantly correlated with core-graft test scores (r = 0.60). A high broad sense heritability estimate of 0.95 ± 0.02 for resistance to SPVD was computed based on the core-graft test for 24 cultivars tested in one year, while a lower broad sense heritability (h2 = 0.48 ± 0.02) was estimated based on the field test for the same cultivars (except one) conducted at four locations for three years. Broad sense heritability estimates from diallel crosses ranged from 0.82 ± 0.02 to 0.98 ± 0.19. ‘TIS 2498,’ ‘TIS 3228,’ ‘TIS 3053,’ ‘TIS 2544’ and ‘TIS 2534’ sweet potato were resistant to SPVD.Keywords
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