scholarly journals Genetic characterization and linkage disequilibrium mapping of resistance to gray leaf spot in maize (Zea mays L.)

2014 ◽  
Vol 2 (2-3) ◽  
pp. 132-143 ◽  
Author(s):  
Liyu Shi ◽  
Xiangling Lv ◽  
Jianfeng Weng ◽  
Hanyong Zhu ◽  
Changlin Liu ◽  
...  
Keyword(s):  
Zea Mays ◽  
Linkage Disequilibrium ◽  
Leaf Spot ◽  
Zea Mays L ◽  
Genetic Characterization ◽  
Gray Leaf Spot ◽  
Linkage Disequilibrium Mapping

scholarly journals Fine mapping of a quantitative resistance gene for gray leaf spot of maize (Zea mays L.) derived from teosinte (Z. mays ssp. parviglumis)

2017 ◽  
Vol 130 (6) ◽  
pp. 1285-1295 ◽  
Author(s):  
Xinye Zhang ◽  
Qin Yang ◽  
Elizabeth Rucker ◽  
Wade Thomason ◽  
Peter Balint-Kurti
Keyword(s):  
Zea Mays ◽  
Resistance Gene ◽  
Fine Mapping ◽  
Leaf Spot ◽  
Zea Mays L ◽  
Quantitative Resistance ◽  
Gray Leaf Spot

scholarly journals Combining powers of linkage and association mapping for precise dissection of QTL controlling resistance to gray leaf spot disease in maize (Zea mays L.)

BMC Genomics ◽  
2015 ◽  
Vol 16 (1) ◽  
Author(s):  
Jafar Mammadov ◽  
Xiaochun Sun ◽  
Yanxin Gao ◽  
Cherie Ochsenfeld ◽  
Erica Bakker ◽  
...  
Keyword(s):  
Zea Mays ◽  
Association Mapping ◽  
Leaf Spot ◽  
Zea Mays L ◽  
Gray Leaf Spot ◽  
Leaf Spot Disease ◽  
Spot Disease

scholarly journals EVALUATION OF MAIZE HYBRIDS TOLERANT TO PHAEOSPHAERIA LEAF SPOT, GRAY LEAF SPOT AND COMMON RUST AND YIELD

2017 ◽  
Vol 16 (1) ◽  
pp. 72
Author(s):  
RENATO BARBOSA CAMARGOS ◽  
JOÃO CANDIDO DE SOUZA ◽  
EDUARDO ALVES ◽  
CARLOS EDUARDO CAIXETA DE CASTRO ◽  
PAULO EDUARDO RODRIGUES PRADO ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Leaf Spot ◽  
Zea Mays L ◽  
Gray Leaf Spot ◽  
Maize Hybrids ◽  
Progress Curve ◽  
Lattice Arrangement ◽  
Plant Emergence ◽  
Set Up

 ABSTRACT - The objectives of this study were to identify maize hybrids which have high grain yield and resistance to Phaeosphaeria leaf spot, gray leaf spot and common rust, as well as to estimate the most efficient period for measuring the reaction of the hybrids to the pathogens. Two experiments were set up in Lavras, MG, Brazil, assessing 30 hybrids in the season of 2011/2012. The experimental design was a 6 x 5 lattice arrangement with three replications. Grain yield was evaluated and five assessments of disease severity were performed at ten-day intervals as of 60 days after maize emergence. After that, the area under the disease progress curve (AUDPC) and the Spearman correlations between the diseases and the various assessment periods for each disease were estimated. It was found that the hybrids GNZ9626 PRO and GNZ9501 PRO have high grain yield and a satisfactory level of resistance to Phaeosphaeria leaf spot, gray leaf and common rust, and that assessment of the level of resistance to these diseases should be performed in the period from 80 to 100 days after plant emergence, which provides results similar to AUDPC.Keywords: Zea mays L., Leaf diseases, Genetic resistance.AVALIAÇÃO DE HÍBRIDOS DE MILHO À MANCHA BRANCA, CERCOSPORIOSE E FERRUGEM COMUM E À PRODUTIVIDADERESUMO - Os objetivos deste trabalho foram identificar híbridos de milho que apresentem alta produtividade de grãos e resistência à mancha-branca, cercosporiose e ferrugem comum, bem como estimar a época de avaliação mais eficiente para mensurar a reação dos híbridos aos patógenos causadores dessas doenças. Para isso, foram instalados dois experimentos no município de Lavras, MG e avaliados 30 híbridos no ano agrícola de 2011/2012. O delineamento experimental utilizado foi o látice 6 x 5 com três repetições. Foi avaliada a produtividade de grãos e realizadas cinco avaliações da severidade dessas enfermidades, em intervalos de 10 dias, a partir de 60 dias da emergência das plantas. Posteriormente, estimou-se a área abaixo da curva de progresso das doenças (AACPD) e a correlação de Sperman entre as mesmas com as diversas épocas de avaliação de cada doença. Constatou-se que os híbridos GNZ9501 PRO e GNZ9626 PRO apresentam alta produtividade de grãos e satisfatório nível de resistência à mancha-branca, cercosporiose e ferrugem comum e que para a avaliação do nível de resistência a essas enfermidades deve-se optar pela avaliação no período que compreende 80 a 100 dias após a emergência das plantas, o qual fornece resultados semelhantes à AACPD.Palavras-chave: Zea mays L., Doenças foliares, Resistência genética.

scholarly journals First Report of Leaf Spot Caused by Cochliobolus eragrostidis on Corn (Zea mays L.) in Fujian Province, China

Plant Disease ◽  
2018 ◽  
Vol 102 (2) ◽  
pp. 439-439 ◽  
Author(s):  
L. Gan ◽  
Y. Dai ◽  
X. Yang ◽  
Y. Du ◽  
H. Ruan ◽  
...  
Keyword(s):  
Zea Mays ◽  
Leaf Spot ◽  
Zea Mays L ◽  
Fujian Province ◽  
First Report

First Report of Curvularia Leaf Spot of Corn, Caused by Curvularia lunata, in the United States

2018 ◽  
Vol 19 (2) ◽  
pp. 140-142 ◽  
Author(s):  
T. Garcia-Aroca ◽  
V. Doyle ◽  
R. Singh ◽  
T. Price ◽  
Keith Collins
Keyword(s):  
United States ◽  
Zea Mays ◽  
Molecular Analysis ◽  
Leaf Spot ◽  
Zea Mays L ◽  
The United States ◽  
Curvularia Lunata ◽  
First Report ◽  
Corn Plants ◽  
Production Areas

During the summer of 2017, corn (Zea mays L.) in production areas throughout Louisiana exhibited symptoms similar to eyespot, caused by Kabatiella zeae (Narita & Y. Hirats). Symptoms included round to oval, light tan to light brown lesions (0.5 to 2.0-mm diameter) with reddish-brown margins often with chlorotic halos in the mid to upper canopy of corn at the brown silk stage. The disease was not severe enough to warrant management; however, it was a concern to corn producers. Symptomatic leaves were obtained from diseased corn, lesion margins were disinfested, and the suspected pathogen was isolated and tentatively identified as Curvularia lunata. Koch’s postulates were completed by inoculating V4 to V5 stage corn plants with a spore suspension and subjecting plants to a 16-h dew period at 25°C, observing symptomology, reisolating the pathogen, and identification via molecular analysis. To our knowledge this is the first report of the disease in Louisiana and the United States.

High levels of linkage disequilibrium and associations with forage quality at a Phenylalanine Ammonia-Lyase locus in European maize (Zea mays L.) inbreds

2006 ◽  
Vol 114 (2) ◽  
pp. 307-319 ◽  
Author(s):  
Jeppe R. Andersen ◽  
Imad Zein ◽  
Gerhard Wenzel ◽  
Birte Krützfeldt ◽  
Joachim Eder ◽  
...  
Keyword(s):  
Zea Mays ◽  
Linkage Disequilibrium ◽  
Phenylalanine Ammonia Lyase ◽  
Zea Mays L ◽  
Forage Quality ◽  
European Maize
Sign in / Sign up

Export Citation Format

Share Document