Registration of Pea Germplasm Lines Partially Resistant to Aphanomyces Root Rot for Breeding Fresh or Freezer Pea and Dry Pea Types

Abstract

Publication Inra prise en compte dans l'analyse bibliométrique des publications scientifiques mondiales sur les Fruits, les Légumes et la Pomme de terre. Période 2000-2012. http://prodinra.inra.fr/record/256699International audienceEight germplasm lines of green pea (Pisum sativum L.)-RIL 846-07 (Reg. No. GP-99, PI 660729), RIL 847-08 (Reg. No. GP-100, PI 660730), RIL 847-22 (Reg. No. GP-101, PI 660731), RIL 847-28 (Reg. No. GP-102, PI 660732), RIL 847-45 (Reg. No. GP-103, PI 660733), RIL 847-50 (Reg. No. GP-104, PI 660734), RIL 847-53 (Reg. No. GP-105, PI 660735), and RIL 847-68 (Reg. No. GP-106, PI 660736)-were developed and released jointly by the USDA-ARS, the French National Institute for Agricultural Research (INRA), and North Dakota State University. They were selected from an F-8-derived recombinant inbred line (RIL) population developed from a cross between 'Dark Skin Perfection' and 90-2131. These lines all have high levels of partial resistance to root rot caused by Aphanomyces euteiches Drechs. f. sp. pisi when screened in 12 environments of 10 infested field nurseries across 4 yr and four locations in the USA and France and with two reference isolates in controlled conditions. On the basis of a disease index derived from the 12 environments (location-years), these lines had improved partial resistance compared with either parent. RIL 847-028, RIL 847-050, RIL 847-053, and RIL 847-068 performed better in U.S. field nurseries than in the French nurseries. Conversely, RIL 846-007, RIL 847-008, RIL 847-022, and RIL 847-045 performed better in the French field nurseries than in the U.S. nurseries. The eight lines also have acceptable agronomic characteristics: they have white flowers, straight blunt green pods, and green cotyledons; are clear seeded and semidwarf; and flower at the 14th-16th node in 57-61 d. The release of these germplasms will assist the breeding and development of either smooth-or wrinkle-seeded cultivars for the fresh or freezer pea and dry pea markets, respectively, with improved partial resistance to Aphanomyces root rot

QTL meta-analysis provides a comprehensive view of loci controlling partial resistance to Aphanomyces euteichesin four sources of resistance in pea

“…multiple-environment effects, markers, confidence intervals, association with unfavorable alleles). RILs from the DSP x 90–2131 population carrying 90–2131 alleles at most of markers linked to the main meta-QTL on LGIII, LGV and LGVII (Table 3) have been recently released [42] and will be useful in breeding for resistance to A. euteiches .…”

“…The few sources of resistance identified, were integrated into pea breeding programs for root rot resistance over the past 30 years. These programs resulted in the release of germplasm with acceptable agronomic characteristics and increased levels of partial resistance in the USA [36-42] and in France [43]. In the past 10 years, a collaborative French-American research program conducted genetic dissection of polygenic resistance to A. euteiches in four main sources of resistance (90–2079, 90–2131, PI180693 and 552) derived from and/or integrated into various breeding programs.…”

Re‐inventing Austrian winter pea Towards developing food quality winter peas

“…It was first reported in the 1920s in Wisconsin and has been widely observed throughout North America (Kraft and Pfleger, 2001). Germplasm with high levels of partial resistance have been released (McGee et al, 2012), and this resistance is being incorporated into winter peas. Typical symptoms of ARR include honey-colored root and belowground stem, outer root and belowground stem tissue slough off, and yellowing of lower leaves and stunting (Fig.…”

Genomic Tools in Pea Breeding Programs: Status and Perspectives

“…Useful germplasms such as sources of resistance to various biotic and abiotic stresses have been identified and are currently being evaluated and introgressed. Research in France and USA has led to the identification and introgression of useful variation for resistance to Aphanomyces root rot; partial resistance controlled by several quantitative trait loci (QTLs) is being deployed (Pilet-Nayel et al, 2002 , 2005 ; McGee et al, 2012 ). Improved stress tolerance has been identified in landrace accessions for toxicity to boron (Bagheri et al, 1994 ), salinity (Leonforte et al, 2013a ), iron deficiency (Kabir et al, 2012 ), and for heat tolerance during flowering (Petkova et al, 2009 ).…”