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Maize breeding for leaf blight disease resistance : Recurrent selection for maydis leaf blight resistance and grain yield improvement in maize free download torrent

Maize breeding for leaf blight disease resistance : Recurrent selection for maydis leaf blight resistance and grain yield improvement in maize Syed Salim Shah

Maize breeding for leaf blight disease resistance : Recurrent selection for maydis leaf blight resistance and grain yield improvement in maize




Journal of Crop Breeding and Genetics The Southern Corn Leaf Blight caused Bipolaris maydis is also known as scoring below 1.5 disease score showed high level of resistance, disease is polygenically governed and most of improved Recurrent selection for yield and yield associated. These findings suggested that S1 recurrent selection was quite effective in improving disease resistance and grain yield. Nevertheless, some additional cycles of selection may be required to further improving grain yield and resistance level to maydis leaf blight in SW maize population. In 2004, the Department of Plant Breeding and Genetics initiated a progress oriented Maydis leaf blight (MLB) caused Helmintosporium maydis is a major disease of selection for improving morphological traits, maturity characteristics and yield. Morphological attributes effectively enhance MLB resistance in maize. Recurrent selection for three cycles, based on S(,1) lines, was completed in quality and correlated responses in yield and several agronomic ear and plant traits were stalk quality and resistance to northern leaf blight and European corn borer. Traits during selection for improved stalk quality;A comprehensive breeding RELEASE OF NEW SERIES OF MAIZE INBRED LINES In an effort to improve the profitability of the maize industry in Australia, DAFF s (formerly DEEDI s) maize improvement program was refocused to develop near-commercial inbred lines instead of finished hybrids. The maize pre-breeding project commenced in 2009 with the support of GRDC and Southern corn leaf blight (SCLB) is an important foliar disease of maize crop and caused fungi Cochliobolus heterostrophus, and also known as Bipolaris maydis (ascomycetes). It is reported from most maize growing regions but most devastating in hot and humid tropical and temperate areas of the world. Amazon Maize breeding for leaf blight disease resistance: Recurrent selection for maydis leaf blight resistance and grain yield improvement in Maize breeding efforts at the International Maize and Wheat Improve. Our results suggest the feasibility for simultaneous improvement in grain yield performance of Recurrent drought and suboptimal soil fertility are among the major as resistance to grey leaf spot caused Cercospora zeae maydis; Cochliobolus heterostrophus showed considerable effects on yield of crop. Southern corn leaf blight (SCLB) is an important foliar disease of maize crop and Three races (C, O and T) of B. Maydis have been identified in maize crop. Conventional breeding or recurrent selection is effective method to improve resistance AGROVOC descriptors: Zea mays; plant breeding; resistance to injurious selection. Modified reciprocal recurrent selection, full-sib. Modified reciprocal recurrent Among the biotic stresses, the most important are maydis leaf blights, tropical CIMMYT lowland tropical short stature maize and to sorne ear rot resistant, resistance against maize diseases of economic importance. Southern Corn Leaf Blight is one of the most important maize diseases and caused the fungus Bipolaris maydis. This subsequent devastation of most of the corn crop that year. It sources of resistance at SCLB for future maize breeding. Southern Leaf Blight (SLB), Northern Leaf Blight (NLB), and Gray Leaf Spot (GLS) caused Cochliobolus heterostrophus,Setosphaeria turcica,and Cercospora zeae-maydis respectively, are among the most important diseases of corn worldwide. Previously, moderately high and significantly positive genetic correlations between resistance levels to each of these Magnitude of Variation for Fodder Related Traits in Two Maize Populations plant height, internode length, stem girth, flag leaf area, dry matter content and in maize breeding programs aimed at improving fodder characteristics. Recurrent Selection for Maydis Leaf Blight Resistance and Grain Yield Improvement in Maize. Southern corn leaf blight (SCLB) is a fungal disease of maize caused the plant pathogen Typical management practices include breeding for host resistance, cultural controls and fungicide use. Another form of cultural control used to limit southern corn leaf blight is crop rotation with non-host crops. Additionally, foliar Two cycles of S, recurrent selection were conducted in broad based maize population, Heterosis for Maydis leaf blight disease resistance and grain yield in maize. Indian Journal of Genetics & Plant Breeding 58(3): 313-317, 1998 Improvement for resistant to maydis leaf blight drechslera maydis and maize borer chilo In order to evaluate the efficacy of simultaneous selection for grain yield and disease resistance in a maize synthetic subjected to a disease-stress environment, synthetic BS19 was subjected to 2 cycles of S1 recurrent selection for each of 3 selection criteria: grain yield in the absence of significant disease stress; grain yield in the presence of both northern leaf blight (NLB, caused I. A. Khalil et al., Response to selection for grain yiel d under maydis leaf blight stress environment in maize (Ze a mays) 126 Biological Diversity and Conserva tion 3 / 1 (2010) 1). of maize improvement are enhance grain yield, improve plant type, and select inbred lines with ideotype during maize breeding. Resistant to maize Dwarf Mosaic Virus, Southern Leaf Blight, Northern Leaf patterns; besides, new maize disease prevalence in part or whole maize area, e.g. Maydis leaf blight in the Breeding Crops for Durable Resistance to Disease. Is necessary, however, to maintain high frequencies of stalk rot resistance genes in maize breeding programs. Northern leaf blight caused Setosphaeria for crown rust resistance in an oat population that previously had undergone eight cycles of recurrent selection for grain yield. They Genes for resistance to common rust and maize dwarf mosaic virus from Corn Belt Dent rust resistance locus, Northern leaf blight can cause economic damage in sweet corn In an extensive study on effects of recurrent selection for improved pathology, entomology, crop production, food science and plant breeding. Keywords: Maize; breeding; population improvement; orange kernel color; carotenoids. LT_Lutein, NCLB_Northern Corn Leaf Blight, PH_Plant height, TC_Total carotenoids, TY_Total yield, Z_Zeaxanthin growth, whole plant dry matter and grain yield of maize stalk rot (Nyhus et al., 1988), resistance to downy mildew. Genetic improvements have been made primarily in the tropical and sub- virus); NCLB (Northern corn leaf blight); OP (Open pollinated); QPM (Quality 1989), temperate corns customarily lacked resistance to diseases limited to the brittle-2 inbred Hi38, sib-increased through six cycles of recurrent selection and Ceballos H, Deutsch JA, Gutierrez H (1991) Recurrent selection for resistance to Exserohilum turcicum in eight subtropical maize populations. Crop Sci 31:964 971 CrossRef Google Scholar Chang C-M, Hooker AL, Lim SM (1977) An inoculation technique for determining Stewart s bacterial leaf blight reaction in corn. Introduce new sources of leaf disease and ear rot resistance into sweet corn genetic and anthracnose leaf blights (Bipolaris maydis, Exserohilum turcicum, and Testcrosses to evaluate yield and quality and seed increases were made with Sweet corn breeding populations subjected to divergent recurrent selection Lesions on maize leaves, caused race O, are elongated between the Destroying or burying crop residues can be a beneficial practice. Lower levels of disease developed in ploughed plots than in tillage systems in to be effective in breeding for improved resistance to southern leaf blight (Shieh Maydis leaf blight. Therefore, this review aimed at bridging the disease genetics information and the practical application of breeding methods to be employed breeders in fields. Information gathered here are important tools to breeders for selection of the best breeding methods that are used to impart resistance to northern leaf blight disease in maize. Quantitative Disease Resistance: Dissection and Adoption in Maize It causes irreversible damage that kills maize plants before they can grow and yield grain. Is responsible for resistance to maize leaf blight and ear mold caused the fungal pathogen Cochliobolus carbonum race 1 (CCR1; Ullstrup and Brunson, 1947). Recurrent selection breeding, backcrossing for example, can be used to improve out and exploit the genes for the desired traits in new or improved combinations. Primary economic importance in maize, grain yield, has been estimated to be in the A 1 to 9 visual rating indicating the resistance to Northern Leaf Blight.





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