Foliar resistance to ozone injury in the genetic base of US and Canadian soybean and prediction of resistance in descendent cultivars using coefficient of parentage
Foliar resistance to ozone injury in the genetic base of US and Canadian soybean and prediction of resistance in descendent cultivars using coefficient of parentage
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DOI：
10.1016/j.fcr.2008.12.005
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发表时间：
2009-04-11
影响因子：
5.8
通讯作者：
Carter, Thomas E., Jr.
中科院分区：
文献类型：
--
作者：
Burkey, Kent O.;Carter, Thomas E., Jr.
在未来对流层O（3）污染增加的气候情景下，发展抗O（3）品种是维持作物生产力的一个潜在的重要途径。大豆（Glycine max（L.）梅尔）O（3）抗性基因来源的鉴定。在温室条件下，对30个大豆祖先系进行了O（3）叶片伤害差异筛选。通过系谱分析确定，祖先代表了北美大豆遗传基础的92%。基于活的最老的主茎叶的油响应，祖先之间的损伤范围为叶面积的5%至50%，这表明祖先之间存在O（3）损伤的实质性遗传变异以及比标准对照品种抗性埃塞克斯（15%损伤）更高的抗性水平。祖先类型Fiskeby 840-7-3和Fiskeby III表现出最大的叶抗，PI 88788最小。随后的田间研究证实了Fiskeby类型的叶片抗性。这里确定的抗性祖先提出遗传和DNA图谱研究，以确定叶抗性的遗传基础。因为O（3）抗性祖先的存在表明，除了抗性对照埃塞克斯外，还可能存在抗性后代。开发了一种方法以便于识别它们。根据系谱分析和祖先对臭氧的反应，计算了247个公开发布的品种的O（3）抗性预测值。使用这种方法，32个公共品种最密切相关的抗性祖先，因此，最有可能是抗性被确定为未来的筛选工作的优先候选人。从分析预测的分数表明，从中西部的品种可能是更敏感的叶面伤害，平均而言，比南方品种。(C)由爱思唯尔公司出版
Development of ozone (O(3)) resistant cultivars is a potentially important approach for maintaining crop productivity tinder future climate scenarios in which tropospheric O(3) pollution is projected to rise. A first step in the breeding of resistant cultivars for a crop Such as soybean (Glycine max (L.) Merr.) is identification of sources of O(3) resistance genes. Thirty ancestral lines of soybean were screened for differences in O(3) foliar injury under greenhouse conditions. The ancestors represented 92% of the genetic base of North American soybean as determined by pedigree analysis. Injury among ancestors ranged from 5 to 50% of leaf area, based oil response of the live oldest main stem leaves, indicating both the presence of substantial genetic variation for O(3) injury among the ancestors as well as resistance levels greater than that of the standard control cultivar, resistant Essex (15% injury). Ancestral types Fiskeby 840-7-3 and Fiskeby III exhibited the greatest foliar resistance and PI 88788 the least. A subsequent field Study confirmed the foliar resistance of the Fiskeby types. Resistant ancestors identified here are proposed for inheritance and DNA mapping studies to determine the genetic basis of foliar resistance. Because the presence of O(3)-resistant ancestors suggested that resistant descendents may exist in addition to the resistant control Essex. a method was developed to facilitate their identification. A predicted O(3)-resistance score Was calculated for 247 Publicly released Cultivars, based on pedigree analysis and ancestral response to ozone. Using this approach, the 32 public cultivars most closely related to resistant ancestors and, thus, most likely to be resistant were identified as priority candidates for future screening efforts. Predicted scores from the analysis suggested that cultivars from the Midwest may be more sensitive to foliar injury, on average, than Southern cultivars. (C) Published by Elsevier B.V.