Resistance of Glycine tomentella to soybean leaf rust Phakopsora pachyrhizi in relation to ploidy level and geographic distribution
Resistance of Glycine tomentella to soybean leaf rust Phakopsora pachyrhizi in relation to ploidy level and geographic distribution
复制标题
毛毛大豆对大豆叶锈病的抗性与倍性水平和地理分布的关系
DOI：
10.1007/bf00226704
复制
发表时间：
1992
影响因子：
5.4
通讯作者：
Anthony H. D. Brown
中科院分区：
文献类型：
--
作者：
D. Schoen;J. Burdon;Anthony H. D. Brown
从澳大利亚的整个物种范围内收集的五个二倍体和五个四倍体同工酶定义的Glycine tomentella群体的加入进行了评分，以抵抗大豆叶锈病的病原体豆薯层锈菌（Phakopsora pachyrhizi）的三个独立菌株。在大多数群体中，耐药性水平很高（>75%）。虽然抗性水平在各组之间存在差异，但多倍体的总体水平与二倍体相似。抗感地理格局。pachyrhizi表明存在两个易感区域。最高比例的易感品种出现在西澳大利亚州和北领地的金伯利高原地区，而另一个易感地区发现在昆士兰州的汤斯维尔/凯恩斯地区。两种类型四倍体材料间遗传杂交的结果表明，在非整倍体类型（2n = 78）中，抗稻瘟病的抗性与抗稻瘟病的抗性一致。在第二组四倍体（2n=80）中，抗性受2 ~ 3个基因控制。
Accessions of five diploid and five tetraploid isozymically defined groups ofGlycine tomentellacollected from throughout the species range in Australasia were scored for resistance to three separate isolates ofPhakopsora pachyrhizi, the causal agent of soybean leaf rust. Resistance levels were found to be high (>75%) in most of the groups. While resistance levels differed among groups, the overall levels in polyploids were similar to those in diploids. Geographical patterns of resistance and susceptibility toP. pachyrhiziindicate that two regions of susceptibility exist. The highest proportion of susceptible accessions occurs in the Kimberley Plateau region of Western Australia and the Northern Territory, while another region of susceptibility is found in the Townsville/Cairns region of Queensland. Results from genetic crosses between accessions within two forms of the tetraploids indicate that in the aneuploid form (2n = 78), resistance toP. pachyrhiziwas under the control of a single dominant gene, whereas in a second group of tetraploids (2n=80), resistance was controlled by two or three gene loci.