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首页> 外文会议>International Rapeseed Congress >Sources of resistance to Sclerotinia sclerotiorum in Brassica napus and B. juncea germplasm for China and Australia
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Sources of resistance to Sclerotinia sclerotiorum in Brassica napus and B. juncea germplasm for China and Australia

机译：肺炎患者肺炎群岛肺炎的抵抗力和中国和澳大利亚的B. Juncea种质

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Sclerotinia stem rot (Sclerotinia sclerotiorum) is a serious disease of oilseed rape in China and becoming a problem in various areas of Australia. Selection for resistance has been an important approach for the management of this disease in China and a similar approach is now required for Australia. While no sources of complete resistance have yet been identified, partial resistance has been reported in the Chinese B. napus genotypes, such as cv. Zhongyou 821. As a first step towards identifying new sources of partial resistance, a field study undertaken in Western Australia to evaluate the reactions to Sclerotinia stem rot of 25 lines of B. napus and 12 lines ofB. juncea from Australia and 17 lines of B. napus from China obtained through an Australian Centre for International Agricultural Research program. Based on stem lesion length, varying levels of resistance to Sclerotinia were differentiated within genotypes from both countries. In particular, some Chinese B. napus genotypes showed good field resistance, with 7 lines ranked in the overall top 15 lines in relation to resistance based on Sclerotinia stem lesion length. With the exception of Fan168, the rest of the Chinese genotypes provided for this study had some tolerance to Sclerotinia. Some Australian B. napus lines with partial resistance were also identified, such as RR002, Ag-Spectrum, Oscar and Lantern, highlighting the existence of useful sources of resistance in the Australian germplasm. Interestingly, we found that severity of stem lesions was at the lowest level when the stem diameter is around 10 mm. Smaller or greater stem diameters gave increased stem lesion length and stem diameter may be a useful parameter for breeders to indicate genotypes of oilseed rape and mustard that may potentially have resistance to Sclerotinia stem rot. A wider search for new sources of resistance is planned, and this will not only include evaluation of additional germplasm from China and Australia, but also germplam from India.
机译：Sclerotinia Steph Rot（Sclerotinia sclerotiorum）是中国油菜的严重疾病，在澳大利亚各地区成为一个问题。抗抵抗的选择是在中国管理这种疾病的重要方法，现在澳大利亚需要类似的方法。虽然尚未识别完全抗性的来源，但在中国B. NAPUS基因型中均报告了部分抗性，例如CV。中友821.作为识别新抗性新来源的第一步，西澳大利亚州开展的田间研究，以评估对25行B. Napus和12行的巩膜毒素的反应。来自澳大利亚的Juncea和来自中国的17行来自中国通过澳大利亚国际农业研究计划获得的中国纳撒。基于茎病变长度，不同于两国的基因型内不同的抗性抗性水平。特别是，一些中国人B. Napus基因型显示出良好的抗田抗性，7条线在基于核苷酸茎病变长度的抵抗力中排名在整体前15条线中。除FAN168外，本研究提供的其余部分基因型对核心季季度具有一些耐受性。还识别出一些澳大利亚B. Napus系列，例如RR002，Ag-Spectrum，Oscar和灯笼，突出澳大利亚种质中的有用抵抗来源的存在。有趣的是，当茎直径约为10mm时，我们发现茎病变的严重程度处于最低水平。较小或更大的茎直径增加了茎病变长度，茎直径可以是育种者的有用参数，以指示油菜和芥末的基因型，这可能潜在具有抗核苷酸茎腐蚀性的芥末。计划更广泛地搜索新的抵抗来源，这不仅包括评估来自中国和澳大利亚的其他种质，还包括来自印度的Germplam。

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