CO477, CO478, CO479, and CO480 inbred lines

2021 ◽  
Author(s):  
Aida Z Kebede ◽  
Lana M Reid ◽  
Constantin Voloaca ◽  
Ron De Schiffart ◽  
Jinhe Wu ◽  
...  
Keyword(s):  
Zea Mays L ◽  
Inbred Lines ◽  
Biofuel Production ◽  
Ear Rot ◽  
Stalk Rot ◽  
Corn Breeding ◽  
Silage Production ◽  
Sugar Levels ◽  
Corn Leaf Blight ◽  
Very High

CO477, CO478, CO479, and CO480 are mid- to late-season (75 – 81 days to flowering, CHU=1720–1855) corn (Zea mays L.) inbred lines with high stalk sugar levels. The level of sugar in the stalks are very high especially when grown as inbred lines. On average, the inbreds yield three times more sugar than their testcrosses. These inbred lines are the first to be developed and released for biofuel production, from the corn breeding program of Agriculture and Agri-Food Canada. Additionally, these inbred lines can be used for sugar and/or silage production. They have moderate to intermediate resistance to common rust, eyespot, northern corn leaf blight and fusarium stalk rot but are susceptible to gibberella ear rot.

CO468, CO469, CO470, CO471, CO472, and CO473 corn inbred lines with improved northern corn leaf blight resistance

2019 ◽  
Vol 99 (6) ◽  
pp. 972-984
Author(s):  
L.M. Reid ◽  
X. Zhu ◽  
K.K. Jindal ◽  
T. Woldemariam ◽  
J. Wu ◽  
...  
Keyword(s):  
Zea Mays L ◽  
Resistance Breeding ◽  
Inbred Lines ◽  
Leaf Blight ◽  
Exserohilum Turcicum ◽  
Northern Corn Leaf Blight ◽  
Helminthosporium Turcicum ◽  
Corn Inbred ◽  
Corn Leaf Blight ◽  
Very High

CO468, CO469, CO470, CO471, CO472 and CO473 are the first corn (Zea mays L.) inbred lines released from the northern corn leaf blight [Exserohilum turcicum (Pass.) K.J. Leonard & E.G. Suggs; syn. = Helminthosporium turcicum Pass.] resistance breeding program of Agriculture and Agri-Food Canada. All six inbreds possess intermediate to very high levels of resistance, which is expressed in hybrids when these inbreds are combined with susceptible test lines. Expression is even higher when some of these lines are combined with each other. Acceptable grain yields and moistures are also achieved in several hybrid testcrosses. All six inbreds also possess intermediate to high levels of resistance to eyespot, common rust, Goss’s bacterial wilt, and grey leaf spot.

CO476 corn inbred line

2020 ◽  
Author(s):  
Aida Kebede ◽  
Lana M Reid ◽  
Constantin Voloaca ◽  
Ron De Schiffart ◽  
Jinhe Wu ◽  
...  
Keyword(s):  
Inbred Line ◽  
Ear Rot ◽  
Gibberella Ear Rot ◽  
Days To Flowering ◽  
Stalk Rot ◽  
Northern Corn Leaf Blight ◽  
Intermediate Response ◽  
Corn Inbred ◽  
Moderate Resistance ◽  
Corn Leaf Blight

CO476 is an early-medium maturity (76 days to flowering) mostly stiff stalk (BSSS) yellow flint inbred which combines well with a stiff stalk B14 type and iodent type testers in many different locations. CO476 possesses moderate resistance to gibberella ear rot both in the inbred and in hybrid combinations. It has intermediate response to common smut, fusarium stalk rot, northern corn leaf blight, common rust and Goss’s wilt.

scholarly journals Genetic Testing of Inbred Lines and Single Cross Hybrids against Fusarium Stalk Rot Caused by Fusarium moniliforme in Maize (Zea mays L.)

2021 ◽  
Vol 10 (11) ◽  
pp. 352-361
Author(s):  
R. Archana H. C. Lohithaswa ◽  
R. Pavan B. N. Swathi ◽  
N. Mallikarjuna
Keyword(s):  
Zea Mays ◽  
Genetic Testing ◽  
Fusarium Moniliforme ◽  
Zea Mays L ◽  
Inbred Lines ◽  
Yield Potential ◽  
Disease Score ◽  
Stalk Rot ◽  
Single Cross ◽  
Single Cross Hybrids

Globally, Maize (Zea mays L.) is a third major cereal food crop. It is a multipurpose crop with 26% of its production is used as food by human beings. Maize is known as “queen of cereals”, because of its high genetic yield potential, efficient utilization of radiant energy and wider adaptability. About 65 different phytopathogens affect the maize production in different stages of life cycle. Among which Fusarium moniliforme is one such soil borne pathogen causes Fusarium stalk rot (FSR) disease that ultimately reduces maize yield potential over the world. In any breeding program, screening and genetic testing of available germplasm resources against pathogens is necessary to prevent yield losses. Hence, the present research screened around 114 maize inbred lines and 45 single cross hybrids (SCHs) against FSR under artificial epiphytotic conditions. Among 114 inbreds, only four inbreds viz., CM 202, 10878, MAI-759 and MAI-766 (mean disease score of 3-4) showed moderately resistant reaction and out of 45 SCHs, only one hybrid combination i.e., MAI329 × CM202 (mean disease score was 2.60) exhibited resistance reaction against Fusarium stalk rot. Nevertheless, these resistance sources could be utilized in maize breeding programs for obtaining high yielding cultivars with resistance towards FSR disease.

CO452 corn inbred line

2014 ◽  
Vol 94 (8) ◽  
pp. 1523-1527
Author(s):  
L. M. Reid ◽  
C. Voloaca ◽  
J. Wu ◽  
T. Woldemariam ◽  
K. Jindal ◽  
...  
Keyword(s):  
Zea Mays ◽  
Inbred Line ◽  
Zea Mays L ◽  
Ear Rot ◽  
Excellent Performance ◽  
Stalk Rot ◽  
Intermediate Resistance ◽  
Short Season ◽  
Corn Inbred ◽  
Moderate Resistance

Reid, L. M., Voloaca, C., Wu, J., Woldemariam, T., Jindal, K. and Zhu, X. 2014. CO452 corn inbred line. Can. J. Plant Sci. 94: 1523–1527. CO452 is a short-season corn (Zea mays L.) stiff stalk inbred line with excellent combining ability as well as moderate resistance to common rust and intermediate resistance to gibberella ear rot, fusarium stalk rot and common smut. Excellent performance data were achieved when CO452 was combined with Lancaster inbreds such as LH162 and Iodent inbreds such as MBS8148.

CO465 corn inbred line

2019 ◽  
Vol 99 (3) ◽  
pp. 388-393
Author(s):  
L.M. Reid ◽  
C. Voloaca ◽  
J. Wu ◽  
T. Woldemariam ◽  
K.K. Jindal ◽  
...  
Keyword(s):  
Zea Mays ◽  
Inbred Line ◽  
Zea Mays L ◽  
Stalk Rot ◽  
Intermediate Resistance ◽  
Early Maturing ◽  
Short Season ◽  
Corn Inbred ◽  
Moderate Resistance ◽  
Corn Leaf Blight

CO465 is a short-season corn (Zea mays L.) inbred line with excellent combining ability with Iodent inbred testers and the early maturing AAFC line CL30. CO465 has moderate resistance to eyespot and intermediate resistance to common rust, northern corn leaf blight, and fusarium stalk rot.

scholarly journals Allozyme-Specific Modification of a Maize Seed Chitinase by a Protein Secreted by the Fungal Pathogen Stenocarpella maydis

2010 ◽  
Vol 100 (7) ◽  
pp. 645-654 ◽  
Author(s):  
Todd A. Naumann ◽  
Donald T. Wicklow
Keyword(s):  
Inbred Line ◽  
Fungal Pathogen ◽  
Genetic Basis ◽  
Inbred Lines ◽  
Ear Rot ◽  
Maize Seed ◽  
Stalk Rot ◽  
Stenocarpella Maydis ◽  
Commercial Field

Stenocarpella maydis causes both dry-ear rot and stalk rot of maize. Maize inbred lines have varying levels of resistance to ear rot caused by S. maydis. The genetic basis of resistance appears to rely on multiple genetic factors, none of which are known. The commonly used stiff-stalk inbred line B73 has been shown to be strongly susceptible to ear rot caused by S. maydis. Here, we report that the ChitA protein alloform from B73, ChitA-F, encoded by a known allele of the chiA gene, is susceptible to modification by a protein (Stm-cmp) secreted by S. maydis. We also identify a new allele of chiA (from inbred line LH82) which encodes ChitA-S, an alloform of ChitA that is resistant to Stm-cmp modification. Chitinase zymogram analysis of seed from a commercial field showed the presence of both ChitA alloforms in healthy ears, and showed that ChitA-F but not ChitA-S was modified in ears rotted by S. maydis. The ChitA-F protein was purified from inbred line B73 and ChitA-S from LH82. ChitA-F was modified more efficiently than ChitA-S by S. maydis protein extracts in vitro. The chiA gene from LH82 was cloned and sequenced. It is a novel allele that encodes six polymorphisms relative to the known allele from B73. This is the first demonstration that the susceptibility to modification of a fungal targeted plant chitinase differs among inbred lines. These findings suggest that the LH82 chiA allele may be a specific genetic determinant that contributes to resistance to ear rot caused by S. maydis whereas the B73 allele may contribute to susceptibility.

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