Screening Potential Citrus Rootstocks for Phytophthora nicotianae Tolerance

Authors

Madhurababu Kunta
Sandy Chavez
Zenaida Viloria
Hilda S. del Rio
Madhavi Devanaboina, The University of Texas Rio Grande Valley
George Yanev, The University of Texas Rio Grande ValleyFollow
Jong-Won Park
Eliezer S. Louzada

Document Type

Article

Publication Date

2020

Abstract

Seeds from four citrus rootstocks including sour orange, Bitters-C22 citrandarin, Sarawak pummelo 3 Rio Red grapefruit, and Sarawak pummelo 3Bower mandarin were exposed to high inoculum levels of Phytophthora nicotianae to screen for tolerance. Inoculation of pregerminated seeds (PGIS) and non-PGIS was carried out. The average P. nicotianae propagule counts from the soil samples where these seedlings were raised ranged from 424 to 1361 colony forming units/cm3. The proportion of live to dead plants was recorded at 11months postinoculation, which showed that Sarawak3Bower performed significantly better than other rootstocks. Evaluation of the rootstocks 18 months postinoculation resulted in only one surviving sour orange plant, which suggests potential rootstock resistance.

Comments

Original published version available at https://doi.org/10.21273/HORTSCI14920-20

Recommended Citation

Kunta, M., Chavez, S., Viloria, Z., del Rio, H. S., Devanaboina, M., Yanev, G., Park, J., & Louzada, E. S. (2020). Screening Potential Citrus Rootstocks for Phytophthora nicotianae Tolerance, HortScience horts, 55(7), 1038-1044. https://doi.org/10.21273/HORTSCI14920-20

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.

First Page

1038

Last Page

1044

Publication Title

HortScience

DOI

10.21273/HORTSCI14920-20