具有金字塔型成株冠锈病抗性的 CDL-111 和 CDL-167 燕麦种质系的登记

IF 0.6 4区 农林科学 Q4 AGRONOMY Journal of Plant Registrations Pub Date : 2024-05-01 DOI:10.1002/plr2.20372
Eric S. Nazareno, Roger Caspers, Melanie Caffe, Kevin Smith, Howard W. Rines, Shahryar F. Kianian
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引用次数: 0

摘要

全球燕麦(Avena sativa)生产都受到冠锈病(由冠锈菌 Puccinia coronata f. sp. avenae 引起)的制约,冠锈病会造成严重的产量损失。通常通过喷洒杀菌剂或种植抗病品种来控制这种疾病。然而,由于病原体的遗传变异性很高,开发寄主抗性是一项挑战。特定种族的抗性通常在短短几年内就会被新的种族所取代。因此,USDA-ARS 谷物疾病实验室开发了制图群体,从莜麦供体中鉴定成株抗性 (APR) 基因座。从制图群体中筛选出抗性品系,并与沙棘(Rhamnus cathartica L.)苗圃选育品系 BT1020-1-1 和 BT1021-1-1 杂交。杂交后,CDL-111(登记号:GP-122,PI 702639)和 CDL-167(登记号:GP-123,PI 702640)均含有三个 APR 数量性状位点,被选为抗性育种的种质。开发了用于选择的高通量标记,并对 APR 基因座进行了分层。
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Registration of CDL-111 and CDL-167 oat germplasm lines with pyramided adult plant crown rust resistance

Oat (Avena sativa L.) production worldwide is constrained by crown rust (caused by Puccinia coronata f. sp. avenae), which can cause significant yield losses. The disease is often controlled by spraying fungicides or planting resistant cultivars. Developing host resistance, however, is a challenge due to the high genetic variability of the pathogen. Race-specific resistance usually succumbs to new races in just a few years. As such, the USDA-ARS Cereal Disease Laboratory developed mapping populations to identify adult plant resistance (APR) loci from Avena sativa donors. Resistant lines from the mapping populations were selected and crossed with buckthorn (Rhamnus cathartica L.) nursery selection lines BT1020-1-1 and BT1021-1-1, which possess a different gene for crown rust resistance derived from Avena strigosa. From the crosses, CDL-111 (Reg. no. GP-122, PI 702639) and CDL-167 (Reg. no. GP-123, PI 702640), both containing three APR quantitative trait loci, were selected as germplasm for resistance breeding. High-throughput markers for selection were developed and implemented in pyramiding the APR loci.

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来源期刊
Journal of Plant Registrations
Journal of Plant Registrations 农林科学-农艺学
CiteScore
1.60
自引率
37.50%
发文量
65
审稿时长
2 months
期刊介绍: The Journal of Plant Registrations is an official publication of the Crop Science Society of America and the premier international venue for plant breeders, geneticists, and genome biologists to publish research describing new and novel plant cultivars, germplasms, parental lines, genetic stocks, and genomic mapping populations. In addition to biomedical, nutritional, and agricultural scientists, the intended audience includes policy makers, humanitarian organizations, and all facets of food, feed, fiber, bioenergy, and shelter industries. The scope of articles includes (1) cultivar, germplasm, parental line, genetic stock, and mapping population registration manuscripts, (2) short manuscripts characterizing accessions held within Plant Germplasm Collection Systems, and (3) descriptions of plant genetic materials that have made a major impact on agricultural security. Registration of plant genetic resources, item (1) above, requires deposit of plant genetic material into the USDA ARS National Plant Germplasm System prior to publication. ­
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