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United States Department of Agriculture

Agricultural Research Service

Title: Cucumber Inbred Line USDA 6632e

Authors
item Staub, Jack
item Crubaugh, Linda

Submitted to: Cucurbit Genetics Cooperative Report
Publication Type: Research Notes
Publication Acceptance Date: November 30, 2001
Publication Date: N/A

Interpretive Summary: Line 6632E, a multiple-disease resistant (six diseases), gynoecious, processing cucumber (Cucumis sativus L.) inbred is being released by the U.S. Department of Agriculture, Agriculture Research Service is being released to provide breeders with a line having high fruit quality and multiple disease resistance to produce hybrid cultivars and germplasm for breeding purposes. The disease resistance attributes of USDA 6632E originate from previously released USDA inbred lines WI 1379, 'Wautoma' and WI 2870. Line 6632E has been tested in hybrid combination with lines M21 and WI 2870 to produce hybrids that are competitive with the fruit yield and quality of 'Vlasset' and other standard commercial cultivars.

Technical Abstract: Line 6632E, a multiple-disease resistant, gynoecious, processing cucumber (Cucumis sativus L.) inbred is being released by the U. S. Department of Agriculture, Agricultural Research Service is being released to provide breeders with a line having high fruit quality and multiple disease resistance to produce hybrid cultivars and germplasm for breeding purposes. The disease resistance attributes of USDA 6632E originate from previously released USDA inbred lines WI 1379, Wautoma, and WI 2870. Line 6632E is resistant to angular leaf spot [Pseudomonas lachrymans (E.F. Smith and Bryan) Carsner; ALS], anthracnose [Colletotrichum orbiculare (Berk. & Mont.) Arx; AN], cucumber mosaic virus (CMV), downy mildew [Pseudoperonospora cubensis (Berk. & Curt.) Rostow; DM], powdery mildew [Sphearotheca fuliginea (Schlechet. Ex Fr.) Poll.; PM], and Scab (spot rot) (Cladosporium cucumerinum Ellis & Arthur; SC). The average fruit length:diameter ratio is about 3:0 in L:D and fruits are bitter free, white-spined, typically moderate to dark green depending on growing environment, and nearly cylindrical. Line 6632E has been tested in hybrid combination with processing inbred lines M21 and WI 2870 to produce hybrids that are competitive with the fruit yield and quality of Vlasset and other standard commercial cultivars.

Last Modified: 10/30/2014
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