Analyses of resistance genes to phytophthora root rot in soybean germplasm
Analyses of resistance genes to phytophthora root rot in soybean germplasm
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发表时间：
2011
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通讯作者：
Zhu Zhen-dong
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作者：
Zhu Zhen-dong
利用温室下胚轴接种技术，鉴定了156份大豆材料对13种大豆疫霉致病型的反应。31个品种对全部13种病原菌均敏感，125个品种对一种或多种病原菌具有抗性，这些抗性品种引发了90种不同的反应类型。通过比较具有单一疫霉抗性基因的不同大豆品种或品系的反应类型，推测了抗性材料中疫霉抗性基因的存在。9个材料产生的5种反应类型与单基因的反应类型一致，12个材料产生的5种反应类型与双基因组合一致。104个条目所引出的80种反应类型可能是新反应类型。
One hundred and fifty six soybean accessions were identified for their reactions to 13 pathotypes of Phytophthora sojae using hypocotyl inoculation technique in greenhouse.31 accessions were found susceptible to all 13 pathotypes,whereas 125 were resistant to one or more pathotypes,and these resistance accessions elicited 90 different reaction types.Phytophthora resistance genes in the resistance accessions were postulated by comparing the reaction types of differential soybean cultivars or lines possessing known as single phytophthora resistance gene.Five reaction types occurred in 9 accessions were consistent with the reaction types of a single gene,while 5 reaction types produced by 12 accessions were consistent with two-gene combinations.Eighty reaction types elicited by 104 accessions could be novel reaction types.