Genetical relationships between reactions to bacterial leaf spot, yellow mosaic and Cercospora leaf spot diseases in mungbean (Vigna radiata)

Euphytica ◽  
1977 ◽  
Vol 26 (3) ◽  
pp. 765-774 ◽  
Author(s):  
R. P. Thakur ◽  
P. N. Patel ◽  
J. P. Verma
Keyword(s):  
Leaf Spot ◽  
Vigna Radiata ◽  
Bacterial Leaf Spot ◽  
Cercospora Leaf Spot

Genetics of Cercospora Leaf Spot Resistance in Mungbean [Vigna radiata (L.) Wilczek] through Generation Mean Analysis

2021 ◽  
Author(s):  
Priyanka Choudhary ◽  
Ramesh Chand ◽  
Anil Kumar Singh
Keyword(s):  
Latent Period ◽  
Leaf Spot ◽  
Vigna Radiata ◽  
Generation Mean Analysis ◽  
Cercospora Leaf Spot ◽  
Progress Curve ◽  
High Heritability ◽  
Efficient Breeding ◽  
Important Disease ◽  
Selection Of

Background: Cercospora leaf spot (CLS) is a fungal disease of mungbean [Vigna radiata (L.) Wilczek] caused by Cercospora canescens and now emerged as an important biotic stress. A better understanding of the genetics of CLS resistance will help in formulating efficient breeding procedures in mungbean.Methods: The present investigation focused on genetics of CLS resistance through generation mean analysis (six parameter model) in two intra-specific mungbean crosses namely, Kopergaon × HUM12 and Kopergaon × ML1720. Four quantitative disease resistance components, viz., Area under disease progress curve (AUDPC), Incubation period (IP), Latent period (LP) and degree of sporulation (SP) were studied.Result: A high correlation of AUDPC with latent period (r = –0.68 to –0.79, P less than 0.0001) and SP (r = 0.72 to -0.81, P less than 0.0001) advocated that both are main contributor for CLS disease development. High heterosis along with high heritability in terms of AUDPC ( greater than 0.09) indicated the importance of genetic factor(s) in controlling CLS resistance. Generation mean analysis of both the crosses revealed duplicate epistatic interaction and involvement of two genes for CLS resistance in terms of AUDPC. This study supports oligogenic nature of inheritance, advocating AUDPC along with IP, LP and SP as important disease indicator for selection of CLS resistance in mungbean.

Inheritance of Cercospora Leaf Spot Resistance in Mung Bean, Vigna radiata (L.) Wilczek

1988 ◽  
Vol 100 (3) ◽  
pp. 228-229 ◽  
Author(s):  
S. P. Mishra ◽  
A. N. Asthana ◽  
Lallan Yadav
Keyword(s):  
Leaf Spot ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Cercospora Leaf Spot

Quantitative trait loci mapping of Cercospora leaf spot resistance in mungbean, Vigna radiata (L.) Wilczek

2010 ◽  
Vol 28 (2) ◽  
pp. 255-264 ◽  
Author(s):  
Sompong Chankaew ◽  
Prakit Somta ◽  
Worawit Sorajjapinun ◽  
Peerasak Srinives
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Leaf Spot ◽  
Vigna Radiata ◽  
Quantitative Trait Loci Mapping ◽  
Cercospora Leaf Spot ◽  
Trait Loci

scholarly journals Validation of molecular markers linked to Cercospora leaf spot disease resistance in mungbean (Vigna radiata [L.] Wilczek)

2021 ◽  
Vol 53 (4) ◽  
pp. 749-757
Author(s):  
P. Papan ◽  
W. Chueakhunthod ◽  
O. Poolsawat ◽  
K. Arsakit ◽  
A. Tharapreuksapong ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Ssr Markers ◽  
Leaf Spot ◽  
Vigna Radiata ◽  
Interval Mapping ◽  
Genetic Distances ◽  
Indel Marker ◽  
Leaf Spot Disease ◽  
Cercospora Leaf Spot ◽  
Phenotypic Data

Cercospora leaf spot (CLS) resistance is a highly desirable trait for mungbean (Vigna radiata [L.] Wilczek) production in Thailand. ‘V4718’ is a vital resistance source that shows high and stable resistance to CLS disease. A previous study identified a major quantitative trait locus (QTL) (qCLSC72V18-1) controlling CLS resistance and found the marker (I16274) that was located closest to the resistance gene by using F2:9 and F2:10 recombinant inbred line populations derived through a cross between ‘V4718’ and the susceptible variety ‘Chai Nat 72’ (‘CN72’). Here, we evaluated three newly reported simple sequence repeat (SSR) markers and one InDel marker together with six previously identified markers that were linked to qCLSC72V18-1 to further identify the markers that were located close to this QTL. By performing bulk segregant analysis on two validation populations, we found that two SSR markers (Vr6gCLS037 and Vr6gCLS133) and one InDel marker (VrTAF5_indel) were putatively associated with CLS resistance. Of these markers, only the VrTAF5_indel marker showed a significant association with the CLS resistance gene with a logarithm of odds score > 3 across the phenotypic data for 2016 and 2018. QTL analysis with inclusive composite interval mapping revealed that the VrTAF5_indel marker was integrated into the genetic map with other previously identified markers. The I16274 and VrTAF5_indel markers flanking the QTL of interest accounted for 41.56%-60.38% of the phenotypic variation with genetic distances of 4.0 and 5.0 cM from the resistance gene, respectively. Both markers together permitted only 0.40% recombination with the CLS resistance gene in marker-assisted selection and thus could be useful in future breeding efforts for CLS resistance in mungbean.

Occurrence of Different Kinds of Diseases in Sesame Cultivation in Myanmar and Their Impact to Sesame Yield

2019 ◽  
pp. 1-9 ◽  
Author(s):  
Yu Yu Min ◽  
Koki Toyota
Keyword(s):  
Powdery Mildew ◽  
Leaf Spot ◽  
Leaf Roll ◽  
Stem Rot ◽  
Yield Reduction ◽  
Yield Losses ◽  
Bacterial Leaf Spot ◽  
Cercospora Leaf Spot ◽  
Charcoal Rot ◽  
Leaf Curl

We surveyed diseases of sesame in 10 farmers’ fields at Nay Pyi Taw, Myanmar and did interviews 25 farmers for the occurrence of diseases and its impact on yield in Magway, the major sesame growing area in Myanmar. We found phyllody, charcoal rot (root and stem rot), Alternaria leaf blight, powdery mildew, and leaf curl, based on on-site symptoms and their microscopic observation in Nay Pyi Taw. The disease incidence ranged from 5% to 30% in phyllody, from 10% to 30% in charcoal rot (root and stem rot) and 10% to 40% in Alternaria blight, while leaf curl and powdery mildew were not observed abundantly. According to interviews conducted in Magway, 60% of the farmers suffered from phyllody disease symptoms, 80% from charcoal rot, 48% from Cercospora, 28% bacterial leaf spot and 24% diseases with the symptoms of leaf roll. Most farmers (84%) noticed combinations of diseases symptoms either phyllody or charcoal rot/black and stem rot or Cercospora leaf spot and/or bacterial leaf spot. Yield losses ranged from 5 to 50% by phyllody, from 10 to 75% by charcoal rot (root and stem rot), from 5 to 50% by Cercospora leaf spot, and 5% by bacterial leaf spot. Other abnormal symptoms such as discoloring of root, seedling death and leaf yellowing were also observed and the yield losses ranged from 5 to 50%.There were no significance relations between the actual yield and yield losses estimated by each disease. A half of farmers (54%) burnt the crop residues after harvest, while 45% directly buried them in their fields including plant parts infected with diseases. Although there was no difference in sesame yield between these two practices, the average yield was higher by 15% in farmers with the burnt practice. Only a few farmers applied fungicides. Potential constraints to cause yield reduction and necessary actions to increase sesame yield are discussed.

scholarly journals Association and inter-relationship among yield and yield contributing characters and screening against Cercospora leaf spot in mung bean (Vigna radiata L.)

2013 ◽  
Vol 8 (41) ◽  
pp. 2008-2014
Author(s):  
Ahmad Aijaz ◽  
M Razvi S ◽  
A Rather M ◽  
Gulzafar ◽  
A Dar M ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Cercospora Leaf Spot

Alternaria and Cercospora Leaf Spot Diseases of Niger (Guizotia abyssinica Cass.) – A Traditional Tribal Crop of South Gujarat, India, with Cost Benefit Ratio in Relation to Different Fungicides

2018 ◽  
Vol 51 (3) ◽  
pp. 89-99
Author(s):  
P.B. Sandipan ◽  
P.K. Jagtap ◽  
M.C. Patel
Keyword(s):  
Field Experiment ◽  
Seed Yield ◽  
Leaf Spot ◽  
Foliar Spray ◽  
Cost Benefit ◽  
Research Station ◽  
Guizotia Abyssinica ◽  
Cercospora Leaf Spot ◽  
Benefit Ratio ◽  
Cost Benefit Ratio

Abstract Niger (Guizotia abyssinica Cass.) is an important minor oil seed crop grown in dry areas grown mostly by tribal and interior places as life line of tribal segment. Tribal people mainly use its oil for cooking purpose, above than that there were also other uses. Hence, the niger crop should be protected from the infection. The crop is affected by number of fungal diseases. Therefore, a field experiment was formulated for three years with the four replications at the Niger Research Station (NRS) at Navsari Agricultural University (NAU), Vanarasi, Navsari (Gujarat) on the foliar diseases of GN-1 variety of niger crop. In this experiment, six different fungicides along with one control have been evaluated to control the Alternaria and Cercospora leaf spot diseases, out of which all the fungicidal treatments were significantly superior over the control. Here, foliar spray on the incidence of diseases was compared with the control (without any treatment). All the fungicidal treatments were significantly superior over the control to reduce Alternaria and Cercospora leaf spot diseases of Niger crop. Treatment of Carbendazim + Mancozeb (0.2 %) with two sprays first from the initiation of the disease and second after the interval of 15 days recorded the lowest incidence of Alternaria (14.56) and Cercospora (14.94) leaf spot diseases of niger and recorded the highest seed yield 337 seed yield kg/ha along with the net return with cost benefit ratio graph.

On the Damage of Cercospora Leaf Spot of Sugar Beets Caused by Cercospora beticola Sacc.

1968 ◽  
Vol 34 (1) ◽  
pp. 1-6
Author(s):  
Wataru IIDA ◽  
Kazuichi KUDO ◽  
Takashi KIMIGAFUKURO
Keyword(s):  
Leaf Spot ◽  
Cercospora Beticola ◽  
Cercospora Leaf Spot ◽  
Sugar Beets
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