Screening for Seedling Resistance to Rice Yellow Mottle Virus in Some Rice Cultivars in Sierra Leone

Plant Disease ◽  
1988 ◽  
Vol 72 (7) ◽  
pp. 641 ◽  
Author(s):  
S. N. Fomba
Keyword(s):  
Sierra Leone ◽  
Mottle Virus ◽  
Rice Yellow Mottle Virus ◽  
Rice Cultivars ◽  
Seedling Resistance ◽  
Yellow Mottle

Rice yellow mottle virus. [Distribution map].

1980 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Ivory Coast ◽  
Mottle Virus ◽  
Rice Yellow Mottle Virus ◽  
Distribution Map ◽  
Yellow Mottle ◽  
Virus Distribution ◽  
New Distribution

Abstract A new distribution map is provided for Rice yellow mottle virus Bakker. Hosts: Rice (Oryza sativa). Information is given on the geographical distribution in AFRICA, Ivory Coast, Kenya, Liberia, Nigeria, Sierra Leone, Tanzania.

scholarly journals Evaluation of rice cultivars for resistance to rice yellow mottle virus

2018 ◽  
Vol 26 (1) ◽  
pp. 49
Author(s):  
H. Kam ◽  
M.-N. Ndjiondjop ◽  
N. Ouedraogo ◽  
M.D. Laing ◽  
A. Ghesquiere
Keyword(s):  
Mottle Virus ◽  
Rice Yellow Mottle Virus ◽  
Rice Cultivars ◽  
Yellow Mottle

Rice yellow mottle virus. [Distribution map].

2010 ◽  
Author(s):  
Keyword(s):  
Oryza Sativa ◽  
Burkina Faso ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Mottle Virus ◽  
Rice Yellow Mottle Virus ◽  
Distribution Map ◽  
Yellow Mottle ◽  
Virus Distribution ◽  
New Distribution

Abstract A new distribution map is provided for Rice yellow mottle virus. Sobemovirus. Hosts: Rice (Oryza sativa). Information is given on the geographical distribution in Africa (Burkina Faso, Cameroon, Chad, Cote d'Ivoire, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Madagascar, Malawi, Mali, Mauritania, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, Tanzania, Uganda, Zimbabwe).

scholarly journals Relative resistance to Rice yellow mottle virus in rice 

2014 ◽  
Vol 50 (No. 1) ◽  
pp. 1-8 ◽  
Author(s):  
M.T. Salaudeen
Keyword(s):  
Agronomic Traits ◽  
Disease Incidence ◽  
Mottle Virus ◽  
High Yield ◽  
Rice Yellow Mottle Virus ◽  
Rice Cultivars ◽  
Progress Curve ◽  
Breeding Programmes ◽  
Yellow Mottle ◽  
Paddy Yield

We identified sources of Rice yellow mottle virus (RYMV) resistance in rice cultivars. Eight cultivars together with susceptible and resistant controls were evaluated under screenhouse conditions as inoculated and uninoculated treatment in completely randomised design with three replications. Seedlings were inoculated with the virus by sap transmission at two weeks after sowing. Disease incidence and severity (scale 1–9: 1–3 = green leaves with sparse dots or streaks, 9 = yellow or orange leaves and some plant dead), yield, and agronomic traits were recorded. Data analyses included Area Under the Disease Progress Curve (AUDPC), independent t-test, and Analysis of Variance. According to differences in most measured traits control cultivars FARO 29 and Gigante were proved to be the most susceptible and partially tolerant ones, respectively. Cvs FARO 12, FARO 17, FARO 37, and FARO 52 were classified as partially tolerant. Uninoculated control plants performed better than the inoculated for all the yield and agronomic parameters. Reduction in plant height (6%) and number of tillers per plant (4.8%), increased days to heading (3 days), and reduction in paddy yield (6.5%) was lowest in cv. Gigante. Paddy yield per plant of the RYMV-inoculated was the highest in cv. Gigante (2.4 g). The rice cultivars which combined RYMV-resistance with high-yield could be utilised in rice breeding programmes in order to enhance food security.

scholarly journals The rice yellow mottle virus P1 protein exhibits dual functions to suppress and activate gene silencing

2010 ◽  
Vol 61 (3) ◽  
pp. 371-382 ◽  
Author(s):  
Séverine Lacombe ◽  
Martine Bangratz ◽  
Florence Vignols ◽  
Christophe Brugidou
Keyword(s):  
Gene Silencing ◽  
Mottle Virus ◽  
Rice Yellow Mottle Virus ◽  
Yellow Mottle ◽  
Activate Gene ◽  
Dual Functions

Molecular epidemiology of the RNA satellite of Rice yellow mottle virus in Africa

2003 ◽  
Vol 148 (9) ◽  
pp. 1721-1733 ◽  
Author(s):  
A. Pinel ◽  
Z. Abubakar ◽  
O. Traor� ◽  
G. Konat� ◽  
D. Fargette
Keyword(s):  
Molecular Epidemiology ◽  
Mottle Virus ◽  
Rice Yellow Mottle Virus ◽  
Yellow Mottle
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