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United States Department of Agriculture

Agricultural Research Service

Research Project: GENETIC IMPROVEMENT OF SOUTHERNPEAS AND PEPPERS Title: PA-560, A Root-Knot Nematode Resistant, Yellow-fruited, Habanero-type Pepper

item Fery, Richard
item Thies, Judy

Submitted to: HortScience
Publication Type: Abstract Only
Publication Acceptance Date: March 31, 2010
Publication Date: August 17, 2010
Repository URL:
Citation: Fery, R.L., Thies, J.A. 2010. PA-560, A Root-Knot Nematode Resistant, Yellow-fruited, Habanero-type Pepper. HortScience. 48(8):s184-s185. (Abstr.)

Technical Abstract: Efforts to develop a yellow-fruited, Habanero-type pepper (Capsicum chinense Jacq.) that is highly resistant to root-knot nematodes were completed with the official release of PA-560 on October 20, 2009. PA-560, an advanced breeding line, is the product of a backcross/pedigree breeding procedure to incorporate a root-knot nematode resistance gene from the Scotch Bonnet-type accession PA-426 into a yellow-fruited, Habanero-type pepper. PA-560 was derived from a single F3 (BC4F3 x BC4F3) plant grown in 2005. It is homozygous for a dominant gene conditioning a high level of resistance to the southern root-knot nematode [Meloidogyne incognita (Chitwood) Kofoid and White], the peanut root-knot nematode [M. arenaria (Neal) Chitwood], and the tropical root-knot nematode [M. javanica (Treub) Chitwood]. PA-560 has a compact plant habit and produces a lantern-shaped, yellow-colored fruit. The results of replicated field studies conducted at Charleston, S.C., indicate the yield potential of PA-560 is comparable to that of traditional Habanero-type cultigens. A typical fruit weighs about 7.6 - 8.0 g and is 2.37 – 2.49 cm wide x 4.43 – 5.54 cm long; the fruit wall is thin (1.43 – 1.60 mm). The fruits are extremely pungent (326,710 Scoville heat units), and a typical fruit has three locules (average number of locules: 3.3). The root-knot nematode resistant PA-560 is recommended for use as a parental line by pepper breeders interested in developing yellow-fruited, root-knot nematode resistant cultivars of Habanero-type peppers. The dominant nature of the gene conditioning the root-knot nematode resistance trait would make PA-560 useful as an inbred parent for development of root-knot nematode resistant F1 hybrids.

Last Modified: 9/2/2015