Performance of Breeding Lines/Cultivars of Rice Against Bacterial Leaf Blight and Sheath Rot under Field Condition

2003 ◽  
Vol 3 (5) ◽  
pp. 478-483
Author(s):  
Mosharraf Hossain . ◽  
Shah Md. Munirur Rah . ◽  
K.M. Khalequzzaman . ◽  
Md. Nazrul Islam . ◽  
M. Ashrafuzzaman .
Keyword(s):  
Field Condition ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Breeding Lines ◽  
Sheath Rot

scholarly journals Development of New Rice (Oryza. sativa L.) Breeding Lines through Marker-Assisted Introgression and Pyramiding of Brown Planthopper, Blast, Bacterial Leaf Blight Resistance, and Aroma Genes

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2525
Author(s):  
Xuan Wang ◽  
Xinying Guo ◽  
Xixi Ma ◽  
Liang Luo ◽  
Yaoyu Fang ◽  
...  
Keyword(s):  
High Resistance ◽  
Agronomic Traits ◽  
Oryza Sativa L ◽  
Brown Planthopper ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Breeding Method ◽  
Breeding Lines ◽  
Biotic Stresses ◽  
Multiple Genes

Brown planthopper, blast, and bacterial blight are the main biotic stressors of rice and can cause a massive loss in rice production. Aroma is an important character of rice quality. It is of far-reaching significance to breed resistant and high-quality varieties using germplasms with objective genes. In this study, the introgression and pyramiding of brown planthopper (BPH), blast, and bacterial leaf blight (BLB) resistance genes and aroma genes into elite rice maintainers and restorers were conducted through conventional cross-breeding coupled with the marker-assisted selection (MAS) breeding method. Single-plant selection was performed from F2 onwards to select desirable recombinants possessing alleles of interest with suitable phenotypes. Respective linked markers were used in each generation from intercrossing to the F7 generation for tracking the presence of targeted genes. A total of 74 improved lines (ILs) have been developed which possess a combination of 1 to 4 genes for BPH, blast, and BLB resistance and aroma. These ILs showed moderate to high resistance to multiple biotic stresses (BPH, blast and BLB) or aromatic fragrance without obvious negative effects on agronomic traits. As multiple resistance and aromatic traits have become significant objectives in rice breeding, these resistance and/or aroma gene introgressed or pyramided lines have important application prospects. Core ideas: (1) marker-assisted breeding was used to pyramid multiple genes for an elite breeding line; (2) improved lines with the introgression of 1–4 genes were developed to achieve high resistance against various biotic stresses and aroma; (3) new lines were used as donor parents to introgress multiple genes in other genetic backgrounds.

scholarly journals Phenotypic Screening of F4 Breeding Lines against Bacterial Blight Disease in Rice

2021 ◽  
pp. 299-304
Author(s):  
K. Alekya ◽  
B. Laxmi Prasanna ◽  
M. Balram ◽  
N. Balram ◽  
P. Gonya Nayak ◽  
...  
Keyword(s):  
Bacterial Blight ◽  
Agricultural Research ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Research Station ◽  
Rice Grain ◽  
Disease Score ◽  
Breeding Lines ◽  
Biotic Stresses ◽  
Resistant Reaction

Biotic stresses are major threat to rice production. Among biotic stresses, bacterial leaf blight is one of the major diseases affecting rice grain production in rice growing areas. Present investigation was conducted to evaluate phenotypic effect of 50 breeding lines from a cross (Pranahitha//ISM/MTU1010) in glass house at Regional Agricultural Research Station, Jagtial by inoculating Bacterial leaf blight culture (DX-020) by leaf clipping method. Out of these 50 F4 lines evaluated, twenty nine breeding lines showed resistant reaction with disease score of 1. Eleven lines showed moderately resistant reaction with disease score 3. Twenty nine breeding lines that were resistant with disease score 1, had excellent grain yield. Hence, these lines can be advanced to further generations. Thus the present study has demonstrated that phenotypic selection is successful in the glass house and these breeding lines with higher yield levels are expected to perform better in the field trials and further in the farmers fields with the good level of bacterial blight resistance.

scholarly journals Phenotypic Evaluation of Advanced Breeding Lines for Resistance against Bacterial Leaf Blight Disease in Rice (Oryza sativa L.)

2021 ◽  
pp. 305-309
Author(s):  
V. Srujana ◽  
M. Balram ◽  
B. Srinivas ◽  
N. Balram
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Leaf Blight ◽  
Rice Crop ◽  
Bacterial Leaf Blight ◽  
Blight Resistance ◽  
Breeding Lines ◽  
Blight Disease

Bacterial Leaf Blight disease epidemically damaged the rice crop. Absence of resistance against BLB disease in MTU1010 is one of the main reason for these epidemics. Thus, there is urgent need to search for resistant source and subsequently, their phenotypic evaluation to validate the resistant source. In this paper discussing about the highlights of phenotypic evaluation of Bacterial Leaf Blight resistance in MTU1010 NIL variety of rice. In the present study, fifty advanced breeding lines along with parents i.e., MTU1010 NIL X Akshayadhan NIL, were screened for bacterial leaf blight disease, Thirty-four breeding lines were shown resistance against bacterial leaf blight disease.

scholarly journals Effect of compost tea, streptomycin and cupravit in controlling bacterial leaf blight of rice

2017 ◽  
Vol 42 (3) ◽  
pp. 447-456
Author(s):  
A Shishir ◽  
MM Kamal ◽  
MAR Khokon ◽  
MR Islam ◽  
S Das
Keyword(s):  
Plant Pathology ◽  
Field Condition ◽  
Marked Effect ◽  
Block Design ◽  
Foliar Spray ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Compost Tea ◽  
Randomized Complete Block Design ◽  
Management Approaches

Compost tea, streptomycin and cupravit were evaluated against the Bacterial Leaf Blight diseases of rice cv. BR11 in two management approaches (preventive and curative) under field condition. The selected cultivar BR11 was cultivated in the field laboratory of the Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh during the period from July to December 2012. The field experiment was carried out with seven treatments in Randomized Complete Block Design (RCBD) and each was replicated thrice. The treatments were T0 = Control, T1= Compost tea as foliar spray 2 times (preventive) @ 1:5 w/v, T2= Compost tea as foliar spray 2 times (Curative) @ 1:5 w/v, T3 = Streptomycin as foliar spray 2 times (preventive) @1gm/10 L, T4 = Streptomycin as foliar spray 2 times (Curative) @ 1gm/10 L, T5 = Cupravit as foliar spray 2 times (preventive) @ 0.2%, T6 = Cupravit as foliar spray 2 times (Curative) @ 0.2%. Cupravit as foliar spray 2 times (Curative) @ 0.2% showed marked effect in reducing Bacterial Leaf Blight diseases of BR11 rice as well as enhancing yield and yield contributing characters. The effect of compost tea also produced similar effects on disease and yield of rice over control. Among the application options of different treatment, curative application provided better results than preventive under field condition.Bangladesh J. Agril. Res. 42(3): 447-456, September 2017

Studies on suppression of bacterial leaf blight by rice endophytic bacteria under field condition

2020 ◽  
Vol 57 (1) ◽  
pp. 64-69
Author(s):  
K Kavitha ◽  
P Nagamani ◽  
P Madhu Sudhan ◽  
K Viswanath ◽  
NP Eswara Reddy
Keyword(s):  
Field Condition ◽  
Endophytic Bacteria ◽  
Foliar Application ◽  
Inhibition Zone ◽  
Antagonistic Effect ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Diffusion Method ◽  
Bacterial Isolates ◽  
Zone Formation

A total of 45 endophytic bacterial isolates were isolated from the healthy rice cultivars viz; MTU 1010, BPT 5204 and NLR 34449 cultivated in Nellore and Chittoor districts of Andhra Pradesh. All the isolated endophytic bacterial isolates were evaluated for their antagonistic effect against bacterial leaf blight (BLB) pathogen Xanthomonas oryzae pv. oryzae by agar well diffusion method. The diameter of inhibition zone formation ranged from 0 mm to 16.8 mm. Among 45 isolates, EMP-5 and EBK-3 isolates showed highest antagonistic effect with inhibition zone of 16.8 mm and 16.6 mm, respectively. Isolate EMP 5 was used for the management of BLB under field condition. Among all the treatments, treatment T5 (i.e., seed treatment with EMP-5 @ 109 cells ml-1 + foliar application of EMP-5 @109 cells ml-1) exhibited highest reduction in disease index (4.92 %), increased plant growth promoting ability with plant height of 80.8 cm, increase in the no. of effective tillers (97.4 %), grain yield (5340 kg ha-1) and straw yield (6013 kg ha-1) over the untreated control. The results strongly emphasize that endophytic bacteria (EMP-5) could be efficiently used for management of bacterial leaf blight.

Evaluation of Improvement Effect of Restorer Lines on Pyramiding Genes Re-sistant to Rice Blast, Bacterial Leaf Blight and Brown Planthopper

2016 ◽  
Vol 42 (1) ◽  
pp. 31 ◽  
Author(s):  
Jue LOU ◽  
Wen-Qing YANG ◽  
Zhong-Xing LI ◽  
Tian-Kuan LUO ◽  
Yong-Chu XIE ◽  
...  
Keyword(s):  
Rice Blast ◽  
Brown Planthopper ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Improvement Effect

scholarly journals Ginger Essential Oils-Loaded Nanoemulsions: Potential Strategy to Manage Bacterial Leaf Blight Disease and Enhanced Rice Yield

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3902
Author(s):  
Abdullahi Adamu ◽  
Khairulmazmi Ahmad ◽  
Yasmeen Siddiqui ◽  
Intan Safinar Ismail ◽  
Norhayu Asib ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Electron Microscope ◽  
Essential Oils ◽  
Disease Severity ◽  
Rice Yield ◽  
Cell Structure ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Control Treatment ◽  
Promising Alternative

The bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of the most serious rice diseases, causing huge yield losses worldwide. Several technologies and approaches have been opted to reduce the damage; however, these have had limited success. Recently, scientists have been focusing their efforts on developing efficient and environmentally friendly nanobactericides for controlling bacterial diseases in rice fields. In the present study, a scanning electron microscope (SEM), transmission electron microscope (TEM), and a confocal laser scanning microscope (CLSM) were utilized to investigate the mode of actions of ginger EOs on the cell structure of Xoo. The ginger EOs caused the cells to grow abnormally, resulting in an irregular form with hollow layers, whereas the dimethylsulfoxide (DMSO) treatment showed a typical rod shape for the Xoo cell. Ginger EOs restricted the growth and production of biofilms by reducing the number of biofilms generated as indicated by CLSM. Due to the instability, poor solubility, and durability of ginger EOs, a nanoemulsions approach was used, and a glasshouse trial was performed to assess their efficacy on BLB disease control. The in vitro antibacterial activity of the developed nanobactericides was promising at different concentration (50–125 µL/mL) tested. The efficacy was concentration-dependent. There was significant antibacterial activity recorded at higher concentrations. A glasshouse trial revealed that developed nanobactericides managed to suppress BLB disease severity effectively. Treatment at a concentration of 125 μL/mL was the best based on the suppression of disease severity index, AUDPC value, disease reduction (DR), and protection index (PI). Furthermore, findings on plant growth, physiological features, and yield parameters were significantly enhanced compared to the positive control treatment. In conclusion, the results indicated that ginger essential oils loaded-nanoemulsions are a promising alternative to synthetic antibiotics in suppressing Xoo growth, regulating the BLB disease, and enhancing rice yield under a glasshouse trial.

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