Resistance of roselle to bacterial wilt caused by Ralstonia pseudosolanacearum and R. solanacearum

ABSTRACT

Roselle (Hibiscus sabdariffa L.), a tropical plant used as a vegetable, is detrimentally affected by bacterial wilt (BW). Limited information is available on resistance of roselle to BW. Roselle collections were sourced in the Philippines and assessed for reaction to BW caused by Ralstonia pseudosolanacerum and R. solanacearum in glasshouse and field experiments. No plants exhibited symptoms of wilting in glasshouse and field trials. High incidence and severe wilting were observed only on susceptible check tomato plants. Weather conditions conducive for BW development had no effect on lack of disease incidence. These roselle genotypes could be possibly used as an alternative to vegetable crops in BW-infested fields.

KEYWORDS:

• Hibiscus sabdariffa
• indigenous vegetable
• phylotype I
• phylotype II

Acknowledgments

We thank Rizalina Tiongco, Raol Pamiloza, Nino Laurel, and Rachele De Torres for technical assistance. Tomato plants were provided by Villamor Ladia and Julie Bituin.

Disclosure statement

All authors declare that they have no conflict of interest.

Ethical approval

The work did not contain studies with human participants or animals.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

The study was funded by the Institute of Plant Breeding (IPB Core 16822), College of Agriculture and Food Science, University of the Philippines Los Baños, The Philippines, and partially funded by the Department of Agriculture – Bureau of Agricultural Research [N814821].