An okra variety, IPSA Okra 1, tolerant to Yellow Vein Mosaic Virus (YVMV) was crossed to 3 susceptible genotypes viz. Parbhani Kranti, SL-44 and SL-46 to determine the nature of inheritance of tolerance of IPSA Okra 1. Grafting test was also done to know the nature of tolerance. It was revealed from the results of grafting test that the tolerance in IPSA Okra 1 is genetic, not due to escape. The F1 hybrids were tolerant to YVMV. From the segregation pattern for disease reaction in F2 and BC1 generations of the 3 crosses, it could be hypothesized that the tolerance to YVMV in IPSA Okra 1 is quantitative, with possibly two major factors, and dependent on gene dosage with incompletely dominant gene action.
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Ali, M., Hossain, M. & Sarker, N. Inheritance of Yellow Vein Mosaic Virus (YVMV) tolerance in a cultivar of okra (Abelmoschus esculentus (L.) Moench). Euphytica 111, 205–209 (2000). https://doi.org/10.1023/A:1003855406250
- Abelmoschus esculentus
- inheritance of tolerance
- okra yellow vein mosaic