Download or read book Allocation of Resources in Breeding for Resistace in Maize to Second Brood of the European Corn Borer written by W. Ken Russell and published by . This book was released on 1977 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toward Insect Resistant Maize for the Third World written by International Maize and Wheat Improvement Center and published by CIMMYT. This book was released on 1989 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inheritance of Resistance in Maize to First and Second Broods of the European Corn Borer written by Mohammad Sadehdel-Moghaddam and published by . This book was released on 1980 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selection for European Corn Borer Leaf and Sheath collar feeding Resistance in Maize written by James Steven Parks and published by . This book was released on 1980 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetics of Resistance in Maize Zea Mays L to Second brood European Corn Borer Ostrinia Nubilalis H bner written by Clark Waller Jennings and published by . This book was released on 1973 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantitative Trait Loci for First and Second generation European Corn Borer Resistance in Maize written by Chaba Jampatong and published by . This book was released on 1999 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: European corn borer (ECB), Ostrinia nubilalis Hübner, family Crambidae, order Lepidoptera, is a serious insect pest of maize (Zea mays L.) in the United States. Losses to farmers resulting from ECB damage and control costs exceed $1 billion each year. An understanding of the genetic basis for ECB resistance should increase the efficiency of breeding for insect resistant varieties. The objectives of this study were to determine the number, genomic positions, and genetic effects of quantitative trait loci (QTL) conferring resistance to the first- and second-generation of European corn borer (1ECB, 2ECB), and to observe QTL × environment interactions. The study included 244 F 2-3 families derived from the cross of B73 (susceptible) × Mo47 (resistant). Evaluating resistance against 1ECB, plants were manually infested at the eight- to ten-leaf stage of plant development. Leaf feeding damage was assessed three weeks after infestation with a visual rating scale. Evaluation for resistance to 2ECB involved manually infesting at anthesis stage of plant development. Approximately seven weeks later, stalks were split lengthwise and number and the length of tunnels visually estimated in inches. Plant height and rind penetrometer resistance were measured two weeks after flowering. Quantitative trait loci analyses for individual environments and combined across three environments were performed by composite interval mapping using QTL Cartographer. For 1ECB leaf feeding, nine QTLs were identified on chromosomes 1(three QTLs), 2, 4 (two QTLs), 5, 6, and 8. Seven QTLs for resistance to 2ECB tunnel length were found on chromosomes 2, 5 (two QTLS), 6 (two QTLs), 8, and 9. Twelve QTLs for resistance to 2ECB tunnel length adjusted for plant height were identified on chromosomes 1 (two QTLs), 2, 3 (two QTLs), 5, 6 (three QTLs), 8, 9, and 10. In addition, QTLs were identified for tunnel number (16 QTLS), plant height (11 QTLs) and rind penetrometer resistance (nine QTLs). In this experiment, a total of 47 QTLs for all traits were mapped in three individual environments and combined over environments. Nine (19%) QTLs were expressed in all three environments and combined, 17 (36%) were expressed in two environments and combined, and 21 (45%) were expressed only in single environment and combined. Inconsistency of QTLs across environments suggested need for breeders awareness when selecting markers linked to QTLs for marker-assisted selection (MAS). Further study on consistency of QTLs across populations is needed before applied breeding programs can fully utilized QTL information.
Download or read book Crop Production written by United States. Science and Education Administration and published by . This book was released on 1978 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Cell Wall Composition on Resistance to the European Corn Borer in Maize written by Michael Ross Buendgen and published by . This book was released on 1988 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Combining Ability Study for Resistance to Second Generation European Corn Borer in Seven Maize Populations written by Khamis Ibrahim Khalifa and published by . This book was released on 1986 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Production Annual Report of the National Research Programs written by United States. Science and Education Administration and published by . This book was released on 1979 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experiments on Breeding Corn Resistant to the European Corn Borer written by and published by . This book was released on 1937 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of Two Methods of Breeding for Resistance to the European Corn Borer in a Synthetic Cultivar of Maize written by Ching Tien Tseng and published by . This book was released on 1984 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introgressing a New Source of Host plant Resistance to European Corn Borer Into Two Elite Maize Inbred Lines written by Craig Arthur Abel and published by . This book was released on 1998 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eleven accessions of Peruvian maize were evaluated for mechanisms of resistance to leaf feeding by European corn borer, Ostrinia nubilalis (Hubner). Antibiosis was identified as one mechanism of resistance that operates at a level equivalent to Cl31A which is a maize inbred line containing high levels of 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA), thus having strong antixenotic and antibiotic properties towards leaf feeding by European corn borer. Antixenosis may be another mechanism of resistance operating in the Peruvian maize but at a level lower than Cl31A. The 11 Peruvian maize accessions were used as donor parents in a backcross plant breeding program designed to introgress the European corn borer resistance trait into two elite U.S. Corn Belt adapted inbred lines. Resistance to European corn borer leaf feeding and sheath and collar feeding was recovered in the Fl indicating dominant genetic control.
Download or read book Maize Genetics Cooperation News Letter written by and published by . This book was released on 1976 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inheritance in Maize of Reaction to European Corn Borer and Its Relationship to Certain Agronomic Characters written by and published by . This book was released on 1958 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Recurrent Selection in Breeding Corn Resistant to the European Corn Borer Pyrausta Nubilalis Hbn written by Robert Louis Harrison and published by . This book was released on 1961 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Location of Genes Conditioning Resistance in Maize to Second Generation European Corn Borers written by Fidelis Ashimole Onukogu and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
