Review: Breeding for Resistance to Sheath blight in rice
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 9
Abstract
Sheath blight (ShB) disease, caused by Rhizoctonia solani, is an economically important rice disease worldwide, especially in intensive production systems. Several studies have been conducted to identify sources for ShB resistance in different species of rice, including local accessions and landraces. It has been difficult to generate SB resistant rice varieties by relying on traditional breeding because resistance to rice SB is a typical quantitative trait. Pathogenesis related (PR) genes of rice are among the most important defense genes in the interaction of rice with pathogens. Rice diseases such as blast, bacterial blight and sheath blight are major obstacles for achieving optimal yields. To complement conventional breeding method, molecular or transgenic method represents an increasingly important approach for genetic improvement of disease resistance and reduction of pesticide usage. During the past two decades, a wide variety of genes and mechanisms involved in rice defense response have been identified and elucidated. However, most of the cloned genes confer high level of race specific resistance in a gene for gene manner, and the resistance is effective against one or a few related races or strains of the pathogens. The resistance is effective for only few years because the pathogen race or strain keeps changing for survival in nature. Therefore, there is an urgent need to broaden the rice gene pool from diverse resources, of which the wild rice is an ideal option.
Authors and Affiliations
Ali Sattari, Baratali Fakheri, M. Noroozi and Kh. Moazami gudarzi
Keywords
Related Articles
- EP ID EP32664
- DOI -
- Views 295
- Downloads 0
Germination performance of four Radish (Rhapanus sativus L. Var sativus) seeds under varying temperatures
Seeds of Topsi, Famox F1, Corox F1, and Altox F1 radish cultivars germinated in controlled 20 and 12oC cabinets. The objective of this experiment was to determine the seed germination performances of four radish cultiv...
Effect of vermicompost on plant growth and its relationship with soil properties
Vermicomposts are rich in microbial populations and diversity, particularly fungi, bacteria and actinomycetes. The continued use of chemical fertilizers causes health and environmental hazards such as ground and surfac...
The role of mechanization in the productivity of potato production in Ardabil city
Productivity measurement is useful tool for analyzing the performance changes over time. The objective of this study mechanization role in potato productivity growth the city of Ardabil, And introduce the parameters an...
Aphis craccivora Koch on wheat in Pakistan
Aphids are important insect pest of wheat (Triticum aestivum L.) which affect crop directly through feeding and indirectly by transmitting different viral diseases. Various aphids are reported in Pakistan and their pop...
Salicylic acid and abiotic stress influence allelochemicals and inhibitory potential of root exudates of two rice(Oryza sativa) cultivars against Barnyardgrass (Echinochloa crus-galli L.)
This study was performed to analyzing the allelochemicals by HPLC method in two rice cultivars root exudates (Tarom and Neda) under different condition. The selected cultivars were grown in hydroponic system and treate...