Investigation formaize inbred lines resistance to maize rough dwarf virus(MRDV)

被引：1
作者：
Estakhr A. [1 ,3 ]
Heidari B. [1 ]
Dadkhodaie A. [1 ]
Masoumi M. [2 ,3 ]
Pakniyat H. [1 ]
Ahmadi Z. [1 ]
机构：
[1] Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz
[2] Plant Virology Research Center, Shiraz University, Shiraz
[3] Research Center for Agriculture, Natural Resources of Fars Province, Shiraz
来源：
Journal of Crop Science and Biotechnology | 2016年 / 19卷 / 1期
关键词：
Disease resistance; Maize lines; MRDV; Planthopper; Viral disease;
D O I：
10.1007/s12892-015-0058-0
中图分类号：
学科分类号：
摘要：
Maize rough dwarf virus (MRDV) is the most important disease affecting maize growth in Iran. In the present study, the putative resistance capacity of 35 maize inbred lines against the causal agents of MRDVwas studied under natural field infection in 2010 and 2011. The viral transmitter was a plant hopper known as Laodelphax steriatellus. Early sowing provided suitable temperatures for vector propagation and transmission and therefore natural infection under field conditions. Sowing single rows of SC704 as vector spreader between every five rows of inbred lines caused adequate vector propagation and viral transmission. This shows that viral infection was sufficient and possible resistance was linked to viral resistance, not failure, in vector transmission. In principal component biplot, plant height vector had wide angles with the vectors for disease severity index and MRDV incidence that showed the negative association of plant height with MRDV disease. The percentage of natural infection to MRDV in susceptible control(SC704) was about 64%. The genotypes A679, K3547/3, K3545/6, K3653/2, and B84 were more susceptible to MRDV. Only the line K3640/3 had low disease incidence and severity and it can be considered as resistant for possible use in genetic studies. Results showed that an early sowing of maize in temperate regions increases the chance of transmitting viruses via their vector. © Korean Society of Crop Science and Springer 2016.
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页码：45 / 52
页数：7
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