Exploring New Sources of Viral Resistance in Cowpea Germplasm and Its Elaboration through Multivariate Analysis

2021 ◽  
Author(s):  
M.S. Iqbal ◽  
S.A. Hussain ◽  
N. Arshad ◽  
S. Munir ◽  
M.A. Ali ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Leaf Shape ◽  
Bean Common Mosaic Virus ◽  
Viral Resistance ◽  
Plant Type ◽  
Cowpea Aphid ◽  
Two Factors ◽  
Eigen Values ◽  
Virus Strains

Background: Cowpea is a major food legume rich in protein but its production has been dwindling by several factors including viral infection due to various virus strains in all agro-ecological zones.Methods: Sixty eight cowpea genotypes were screened against qualitative traits (leaf shape, seed surface, twinning tendency, anthocynin pigment, plant type, fodder type and cream color) and four seed borne viruses viz. cucumber mosaic virus (CMV), cowpea aphid borne mosaic virus (CABMV), black eye cowpea mosaic virus (BlCMV) and bean common mosaic virus (BCMV) under both in situ and laboratory conditions using DAC-ELISA.Result: Based on in situ screening, 16 genotypes were found resistant to all the four viruses, whereas for ELISA, 13 genotypes (27005, 27041, 27075, 27141, 27145, 27146, 27147, 27158, 27160, 27167, 27172, IT85F-1380 and IT86D-719) were found resistant to all. Twelve clusters were obtained from UPGMA based on disease severity. Genotype 27008 (Pakistan) was present in cluster VI and was susceptible to all antisera CMV, CABMV, BICMV and BCMV. Whereas 13 genotypes were present in cluster VIII which were found resistant to all the four antisera applied. Therefore, 13 genotypes suggested for safe use in any breeding program at developing resistant cultivars. First two factors obtained through PCA with eigen-values greater than 1 contributed greater than 80 per cent variability. Twelve distinct groups were observed and these were in coordination with cluster analysis.

The genetics of resistance to two strains of bean common mosaic virus in three cultivars of Phaseolus vulgaris L.

1980 ◽  
Vol 95 (3) ◽  
pp. 619-630 ◽  
Author(s):  
N. L. Innes ◽  
D. G. A. Walkey
Keyword(s):  
Mosaic Virus ◽  
Dominant Gene ◽  
Continuous Distribution ◽  
Recessive Gene ◽  
Distribution Patterns ◽  
Bean Common Mosaic Virus ◽  
Gene Model ◽  
Resistant Cultivars ◽  
High Level ◽  
Virus Strains

SUMMARYA high level of resistance to the bean common mosaic virus strains NL3 and NL4 when inoculated separately or together was confirmed in the cultivars Turkish Brown, Valja and 1750–73. Following crosses between the susceptible cv. The Prince and all three resistant cultivars, inoculation of F2 and F3 populations revealed that the cvs Turkish Brown and Valja each differed from The Prince in being homozygous for a major recessive gene conferring resistance to both NL3 and NL4. Homology tests indicated that the same gene was present in both Turkish Brown and Valja. Polygenes in Turkish Brown and Valja also appeared to confer some resistance to NL3, or environmental variation led to continuous distribution patterns in the F2's of resistant parents crossed with The Prince. Although a major recessive gene controlled resistance to NL3 in cv. 1750–73, it differed from that in the two other resistant cultivars. In addition, cv. 1750–73 carried a dominant gene determining reaction to the virus; probably the I gene originally found in Corbett Refugee. An attempt is made to relate these results to Drijfhout's (1978) gene-for-gene model. Using Drijfhout's gene nomenclature all the cultivars tested appear to carry the strain nonspecific gene bc-u. Further genetical tests will be necessary to determine with certainty which, if any, of Drijfhout's strain-specific resistant bc-genes are present in the three resistant cultivars studied here.

scholarly journals Analysis of 3′-Terminal Region of Bean common mosaic virus Strains Infecting Common Bean in India

2011 ◽  
Vol 22 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Prachi Sharma ◽  
P. N. Sharma ◽  
Renu Kapil ◽  
S. K. Sharma ◽  
O. P. Sharma
Keyword(s):  
Common Bean ◽  
Mosaic Virus ◽  
Bean Common Mosaic Virus ◽  
Terminal Region ◽  
Virus Strains

AC Mast common bean

2001 ◽  
Vol 81 (4) ◽  
pp. 735-736
Author(s):  
S. J. Park ◽  
T. Rupert
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Key Words ◽  
Mosaic Virus ◽  
Bean Common Mosaic Virus ◽  
Plant Type ◽  
Navy Bean ◽  
Dry Bean ◽  
Bean Cultivar ◽  
Cultivar Description

AC Mast is a high-yielding navy bean cultivar with medium maturity. It has an upright plant type suitable for direct combine harvest. AC Mast has acceptable cooking/canning quality. It is resistant to races 1 and 15 of bean common mosaic virus. Key words: Phaseolus vulgaris, dry bean, cultivar description

Identification of Peanut Green Mosaic Virus Strains in India

1991 ◽  
Vol 133 (1) ◽  
pp. 49-56 ◽  
Author(s):  
R. A. Naidu ◽  
P. Sreenivasulu ◽  
S. K. Manohar ◽  
K. N. Ramakrishna ◽  
D. V. R. Reddy ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Virus Strains

scholarly journals Nature, Incidence, and Symptomatology of Viruses Infecting Vanilla tahitensis in French Polynesia

Plant Disease ◽  
2004 ◽  
Vol 88 (2) ◽  
pp. 119-124 ◽  
Author(s):  
M. Grisoni ◽  
F. Davidson ◽  
C. Hyrondelle ◽  
K. Farreyrol ◽  
M. L. Caruana ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Significant Proportion ◽  
French Polynesia ◽  
Bean Common Mosaic Virus ◽  
Enzyme Linked Immunosorbent Assay ◽  
Watermelon Mosaic Virus ◽  
Cymbidium Mosaic Virus ◽  
Virus Identification ◽  
Society Islands ◽  
Leeward Islands

A survey was carried out to identify the viruses infecting vanilla in French Polynesia and to assess their incidence. Virus identification was based on enzyme-linked immunosorbent assay (ELISA) and, for potyviruses, on the sequence of part of the coat protein and inoculation assays. Between 1998 and 1999, 3,610 vanilla plants from 49 plots in the Society Islands were indexed. Cymbidium mosaic virus (CymMV) was detected in 500 vines from 10 plots in the Leeward Islands. The data suggest that this virus has spread widely since its first detection in French Polynesia in 1986, most likely through the dissemination of symptomless infected cuttings. Viruses belonging to the Potyvirus genus were found in 674 plants from 27 plots in the four islands surveyed. Three distinct potyviruses have been identified: (i) Vanilla mosaic virus, (ii) Watermelon mosaic virus, and (iii) and a virus related to Bean common mosaic virus. The symptoms induced on Vanilla tahitensis by the three potyviruses can be differentiated from each other and from those due to CymMV. A significant proportion of the plants surveyed (97/476) were symptomatic but tested negative by ELISA for CymMV and the Potyvirus group. Odontoglossum ringspot virus was not detected in any sample tested.

scholarly journals Towards More Realistic Leaf Shapes in Functional-Structural Plant Models

Symmetry ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 278 ◽  
Author(s):  
Dominik Schmidt ◽  
Katrin Kahlen
Keyword(s):  
Fluctuating Asymmetry ◽  
Leaf Shape ◽  
Three Dimensional ◽  
Directional Asymmetry ◽  
The Novel ◽  
Shape Model ◽  
Plant Model ◽  
Virtual Plant ◽  
Perfect Symmetry

Fluctuating asymmetry in plant leaves is a widely used measure in geometric morphometrics for assessing random deviations from perfect symmetry. In this study, we considered the concept of fluctuating asymmetry to improve the prototype leaf shape of the functional-structural plant model L-Cucumber. The overall objective was to provide a realistic geometric representation of the leaves for the light sensitive plant reactions in the virtual plant model. Based on three-dimensional data from several hundred in situ digitized cucumber leaves comparisons of model leaves and measurements were conducted. Robust Bayesian comparison of groups was used to assess statistical differences between leaf halves while respecting fluctuating asymmetries. Results indicated almost no directional asymmetry in leaves comparing different distances from the prototype while detecting systematic deviations shared by both halves. This information was successfully included in an improved leaf prototype and implemented in the virtual plant model L-Cucumber. Comparative virtual plant simulations revealed a slight improvement in plant internode development against experimental data using the novel leaf shape. Further studies can now focus on analyses of stress on the 3D-deformation of the leaf and the development of a dynamic leaf shape model.

Sign in / Sign up

Export Citation Format

Share Document