花生新选育品系抗锈病田间评价及成分分析

Peanut Science Pub Date : 2019-04-24 DOI:10.3146/PS18-4.1
I. Power, B. Tillman, T. Brenneman, R. Kemerait, K. Stevenson, A. Culbreath
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引用次数: 1

摘要

采用田间试验、温室试验和生长室试验确定了对花生契诃夫病的抗性水平。花生(arachhis hypogaea L.)新选育系。这些品系是在花生合作研究和支持计划(花生CRSP)的UF150项目中开发的,该项目是美国国际开发署(USAID)的一部分。2010 - 2013年在佛罗里达州Citra和佐治亚州Tifton进行了田间试验。5个基因型Tifrust-10和Tifrust-13以及CRSP选品系PTBOL3-3、97x36- ho2 -1- bg2 -3-1-2-2和BOL3-7的锈病进展曲线下标准化面积和最终病害严重程度评分最低。CRSP选品系97x36-HO2-1-B2G-3-1-2-2和BOL3-7对人尾孢子虫引起的晚叶斑病也表现出高度的抗性(Berk & M. A. Curtis Deighton)。在生长室研究中,潜伏期较长的基因型通常在接种后7、11和16 d的感染频率较低,患病面积的百分比较小。潜伏期和患病面积百分比与stAUDPC显著相关。CRSP选品系97x36-HO2-1-B2G-3-1-2-2和BOL3-7以及植物引种PI562530、PI568164和PI298115的这些成分得分较低。在这些研究中发现了几种在不同环境和高疾病压力下具有多重抗病的基因型。这些结果提示了CRSP选育品系抗锈病的来源,包括几种基因型可以作为花生种质资源增强计划的亲本,并表明潜伏期、病面积百分比和病斑直径可以作为生长室研究中抗锈病的指标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Field evaluation and components of peanut rust resistance of newly developed breeding lines
Field, greenhouse, and growth chamber experiments were conducted to determine the level of resistance to Puccinia arachidis Speg. in newly developed breeding lines of peanut (Arachis hypogaea L.). These lines were developed in the UF150 project of the Peanut Collaborative Research and Support Program (Peanut CRSP) as part of the United States Agency for International Development (USAID). Field experiments were carried out in Citra, FL and Tifton, GA from 2010 to 2013. Five genotypes Tifrust-10 and Tifrust-13, and CRSP breeding lines PTBOL3-3, 97x36-HO2-1-B2G-3-1-2-2, and BOL3-7 had the lowest standardized area under the disease progress curve and final disease severity score for rust. The CRSP breeding lines 97x36-HO2-1-B2G-3-1-2-2 and BOL3-7 also appeared to be highly resistant to late leaf spot, caused by Cercosporidium personatum (Berk & M. A. Curtis Deighton). In growth chamber studies, genotypes with longer latent periods generally had lower infection frequencies at 7, 11, and 16 d after inoculation, and smaller percent diseased areas. Latent period and percent diseased area were significantly correlated with stAUDPC. CRSP breeding lines 97x36-HO2-1-B2G-3-1-2-2 and BOL3-7, and plant introductions PI562530, PI568164, and PI298115, were among the genotypes with the lower scores for these components. Several genotypes with multiple disease resistance in different environments and under high disease pressure were identified in these studies. These results indicate sources of rust resistance in the CRSP breeding lines, including several genotypes that could be used as parents in peanut germplasm enhancement programs, and indicate that latent period, percent diseased area, and lesion diameter may be used as indicators for rust resistance in growth chamber studies.
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