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首页> 外文期刊>Acta Horticulturae >Screening and Breeding for Genetic Resistance to Anthracnose in Mango
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Screening and Breeding for Genetic Resistance to Anthracnose in Mango

机译：芒果炭疽病遗传抗性的筛选与育种

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Postharvest diseases remain a significant constraint to the transport, storage and marketing of mangoes. The two main ones are anthracnose and stem end rot. Anthracnose caused by Colletotrichum gloeosporioides is the more wide-spread of the two. Varieties within Mangifera indica are known to vary in their level of reactions to anthracnose; however, the best tolerance in current commercial cultivars is not sufficient to eliminate the need for pre- and postharvest fungicides treatments. A screening program was initiated in mango accessions in the Australian National Mango Genebank to look for any significant resistance to C. gloeosporioides in fruit as they ripened. Screening was conducted by rating reactions to natural infection of anthracnose and reactions to artificially inoculating fruit with virulent isolates of C. gloeosporioides. A range of reactions to the pathogen were identified, with strong resistance found in one accession of the species M. lamina. This accession was used as the pollen parent in a controlled crossing program with a M. indica hybrid from the Australian Mango Breeding Program (AMBP). Sixty successful hybrids between the species have been generated. The hybrid population will be screened for resistance to anthracnose and used for gene discovery investigations to identify markers for anthracnose resistance.
机译：收获后疾病仍然是芒果运输，储存和销售的重要制约因素。主要的两个是炭疽病和茎端腐烂。由Colletotrichum gloeosporioides引起的炭疽病是两者中分布更广的。已知印度芒果中的品种对炭疽病的反应水平各不相同。然而，当前商业品种的最佳耐受性不足以消除对收获前和收获后杀菌剂处理的需求。在澳大利亚国家芒果种质库中，对芒果种质启动了一项筛选计划，以寻找成熟时对果实中的C. gloeosporioides的显着抗性。通过评估对炭疽病自然感染的反应以及对有毒的C. gloeosporioides的人工接种水果进行反应的反应进行筛选。鉴定出了对病原体的一系列反应，在一种分枝杆菌中发现了强抗性。该种在与澳大利亚芒果育种计划（AMBP）的印度M杂交的受控杂交计划中用作花粉亲本。已经产生了60个物种之间的成功杂交体。将对杂种人群的炭疽病抗性进行筛选，并用于基因发现研究以鉴定炭疽病抗性的标记。

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