Evaluation of resistant genotypes and their characterization using molecular markers linked for powdery mildew resistance in cucumber (Cucumis sativus L.)

Autor:	Susheel Sharma, Aejaz Ahmad Dar, Sachin Gupta, Ravinder Singh
Rok vydání:	2021
Předmět:	Genetics Plant Science Agronomy and Crop Science
Zdroj:	Plant Genetic Resources: Characterization and Utilization. 19:497-502
ISSN:	1479-263X 1479-2621
DOI:	10.1017/s1479262121000605
Popis:	Powdery mildew (PM) is one of the most severe fungal diseases of cucumber that limits its production worldwide. In this study, 140 genotypes of cucumber were screened for disease resistance under field and artificial conditions, and then validated with eight known SSR markers linked to PM resistance. Among these genotypes, genotype GS140 was found resistant (R), whereas GS148, GS16 and GS70 were moderately resistant, and GS169 was found to be tolerant. Of all the eight markers, only C31, C80, C162, SSR16472 and SSR16881 amplified the reported linked allele. The 127 bp allele of SSR16881 was found to be associated with the lowest disease severity of 37.65%. The associated markers could further be verified for their usability using linkage studies and the contrast genotypes in the present study could serve as a tool for selection in future marker-assisted selection breeding strategies for PM resistance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aaaefca50285acc55f4635683afe2921 https://doi.org/10.1017/s1479262121000605 Zobrazit plný text záznamu