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首页> 外文期刊>Genetics and molecular biology: publication of the Sociedade Brasileira de Genetica >Inheritance of resistance to Phytophthora infestans (Peronosporales, Pythiaceae) in a new source of resistance in tomato (Solanum sp. (formerly Lycopersicon sp.), Solanales, Solanaceae)
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Inheritance of resistance to Phytophthora infestans (Peronosporales, Pythiaceae) in a new source of resistance in tomato (Solanum sp. (formerly Lycopersicon sp.), Solanales, Solanaceae)

机译：在番茄的新抗性来源（茄属（Solanum sp。）（茄属（Lycopersicon sp。）），茄属（Solanales），茄科（Solanaceae））中获得了对疫霉疫霉（Peronosporales，Pythiaceae）的抗性遗传。

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摘要

In Brazil, no commercial tomato (Solanum lycopersicum L. formerly Lycopersicon esculentum Mill.) varieties are available which are resistant to the late blight, one of the most important tomato diseases, produced by the phytopathogenic oomycete Phytophthora infestans. The wild tomato (Solanum habrochaites Knapp & Spooner, formerly Lycopersicon hirsutum Dunal) shows resistance to P. infestans, because of which we investigated an interspecific cross between S. lycopersicum cv. Santa Clara and S. habrochaites accession BGH 6902 maintained at the Horticultural Germplasm Bank at the Federal University of Vi?osa (Banco de Germoplasma de Horticultura (BGH), Universidade Federal de Vi?osa (UFV), Vi?osa, Minas Gerais, Brazil) The genitors, F1, F2, BC1 and BC2 were used to study the inheritance of resistance to P. infestans and to estimate the genetic parameters associated with resistance. Analysis of the area under the disease progress curve (AUDPC) indicated that inheritance is polygenic and that dominance controls character, whereas mean analysis showed that the additive effect was the most important. Although the character presents variability, the heritability is low which generates the need to better control the environment to obtain success with the selection.
机译：在巴西，没有商业化的番茄品种（Solanum lycopersicum L.以前为Lycopersicon esculentum Mill。），它们对由植物致病性卵菌疫霉疫霉产生的晚疫病是最重要的番茄病之一具有抗性。野生番茄（Solanum habrochaites Knapp＆Spooner，原名Lycopersicon hirsutum Dunal）显示出对P. infestans的抗性，因此我们研究了S. lycopersicum cv之间的种间杂交。 Santa Clara和S. habrochaites保藏号BGH 6902在维索萨联邦大学（Berco de Germoplasma de Horticultura（BGH），维索萨联邦大学（UFV），维索萨，米纳斯吉拉斯州，巴西）使用F1，F2，BC1和BC2的祖代来研究对致病疫霉的抗性遗传，并估算与抗性相关的遗传参数。对疾病进展曲线（AUDPC）下面积的分析表明，遗传是多基因的，优势控制特征，而均值分析表明加性效应是最重要的。尽管角色表现出可变性，但是遗传力较低，这就产生了需要更好地控制环境以获得选择成功的需求。

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