PSSJ-FRU07

Name	PSSJ-FRU07
Alias	GP-1116 [view all 2]
GRIN ID	PI 699972
Type	Breeding Germplasm
Species	Gossypium hirsutum
Description	The 17 Upland cotton (Gossypium hirsutum L.) germplasm lines, PSSJ-FRU01 to PSSJ-FRU17 possess improved resistance to Fusarium wilt [Fusarium oxysporum f. sp. vasinfectum (FOV) Atk. Sny & Hans], FOV race 4 (FOV4). The Upland lines were derived from six diverse cross-combinations using 10 parental lines with different genetic backgrounds. The breeding of these lines started in 2014-2015. Field and greenhouse plant FOV4 response to infection by inoculum pressure was assessed through evaluations of foliar symptoms (FS), vascular root staining (VRS) and percent survival (PS), and measures of relative plant vigor. A range of severity of FS, VS, and PS occurred in the infested fields based on tested accessions and observations of susceptible germplasm/cultivar-checks, indicating moderate to severe inoculum FOV4 levels with the sites from 2014 through 2020. Recurrent cycles of selection was applied based on a single plant under FOV4 infested field screening from F1 to F4. Germplasm lines had a VRS value of less than 1.5 (VRS scale 0 to 5 - dead) and PS higher than 85 %, during infested field evaluations in the San Joaquin Valley (SJV) of California 2015 – 2017. Similar FOV4 resistance response on these lines was observed in 2019-2020 in SJV and in the El Paso, TX region sites with significant differences (p < 0.05) between the lines and susceptible cultivar-checks, Pima S7, Pima 3-79, and Upland Shorty. Preliminary analyses of fiber quality traits for the germplasm lines collected in 2020 in Five Points, CA revealed good to superior fiber quality compared to standard fiber quality-ranges of Upland commercial cultivars. The primary purpose for the release of the Upland PSSJ series is to provide to cotton breeders the urgently needed sources for FOV4 resistance in Upland cotton; reduce the vulnerability of the cotton industry to this fungal pathogen; and to advance efforts to broaden the genetic base which is critical to the future of the Upland cotton industry in the U.S.
Origin Country	United States
Origin Detail	Texas
Pedigree	PSSJ-FRU06, PSSJ-FRU07 = SA-1148 (AUBURN M) x NuMex COT 15 GLS
Maternal Parent	Auburn M
Paternal Parent	NuMex COT 15 GLS
Maternal Parent of	N/A
Paternal Parent of	N/A
Phenotypic Data	N/A
SSR Genotype Data	N/A
SNP Genotype Data	N/A
Map	N/A
DNA Library	N/A
Sequence	N/A
Comments	N/A
Reference	N/A

Synonym
GP-1116
PI 699972

Database	Accession
GRIN	PI 699972