scholarly journals Genetic Divergence of Rice Genotypes Revealed by Bacterial Blight Disease and Morphological Traits

2021 ◽  
Vol 24 (1) ◽  
pp. 73-84
Author(s):  
SAI Nihad ◽  
A Ara ◽  
MM Rashid ◽  
MAI Hasan ◽  
MAI Khan ◽  
...  
Keyword(s):  
Bacterial Blight ◽  
Principal Component ◽  
Morphological Diversity ◽  
Morphological Characters ◽  
Susceptible Variety ◽  
Resistant Variety ◽  
Resistant Reaction ◽  
Rice Genotypes ◽  
Bacterial Blight Disease ◽  
Blight Disease

Bacterial blight is a perilous impediment for rice production. Resistant variety is a sustainable approach to fend off the loss of rice due to bacterial blight disease. In this study, 94 genotypes were screened against bacterial blight disease and its morphological diversity was assessed to find out the resistant donor with desirable morphological characters. Bacterial blight pathogen was inoculated following leaf clipping method for disease scoring. Out of 94 genotypes, 12 showed a resistant reaction, 13 showed moderately resistant reaction and 69 genotypes showed a susceptible reaction. Positive correlation was recorded between yield and most of the morphological characters. Yield hill─1 was significantly correlated with the number of tiller hill─1 (0.503**), number of effective tiller hill─1 (0.538**), total number of spikelets panicle─1 (0.595**), number of filled grain panicle─1 (0.595**), number of unfilled spikelet panicle─1 (0.239*) and 1000 grain weight hill─1 (0.843**). Eleven quantitative characters grouped 94 rice genotypes in 16 clusters at coefficient 3.38 and it indicated the presence of great amount diversity among the genotypes. Principal component analysis (PCA) supported the cluster analysis and the first four principal components explained around 70.99% of total divergence for all morphological characters. Principal coordinate analysis (PCoA) demonstrated that the genotypes BR8862-29-1-5-1-3, SVIN301, SVIN321, BR9207-45-2-2, SVIN018, lRBB5, SVIN038, BRRI dhan28 and BRRI dhan29 were placed in distant position from the centroid and it indicated that they were more diverse than the genotypes near the centroid. However, based on disease reaction and genetic diversity analysis crossing could be made between, resistant genotypes such as SVIN317, SVIN017, SVIN316, SVIN313, SVIN315, SVIN314, SVIN038, SVIN307, SVIN302, SVIN304 with the susceptible variety more specifically with BRRI dhan28, BRRI dhan29, BRRI dhan50, BRRI dhan58, BRRI dhan63, BRRI dhan74, BRRI dhan81 and BRRI dhan84 to develop bacterial blight resistant variety. Bangladesh Rice J. 24 (1): 73-84, 2020

Silencing of an aquaporin gene diminishes bacterial blight disease in rice

2018 ◽  
Vol 48 (2) ◽  
pp. 143-158 ◽  
Author(s):  
Liyuan Zhang ◽  
Yiqun Hu ◽  
Ping Li ◽  
Xiaobing Wang ◽  
Hansong Dong
Keyword(s):  
Bacterial Blight ◽  
Aquaporin Gene ◽  
Bacterial Blight Disease ◽  
Blight Disease

Plant growth regulators and signal molecules enhance resistance against bacterial blight disease of pomegranate

2017 ◽  
Vol 165 (11-12) ◽  
pp. 727-736 ◽  
Author(s):  
Konduvally Annegowda Lalithya ◽  
Girigowda Manjunatha ◽  
Besagarahally Raju ◽  
Mukund S. Kulkarni ◽  
Veeresh Lokesh
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Bacterial Blight ◽  
Signal Molecules ◽  
Bacterial Blight Disease ◽  
Blight Disease

scholarly journals Thai Indigenous Lowland Rice Germplasms: Sources of Bacterial Blight Disease Resistance and Agronomic Attributes

2020 ◽  
Vol 42 (2) ◽  
Author(s):  
Menson R. Kwanwah ◽  
Tanawat Wongsa ◽  
Tidarat Monkham ◽  
Sompong Chankaew ◽  
Shanerin Falab ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Bacterial Blight ◽  
Lowland Rice ◽  
Bacterial Blight Disease ◽  
Blight Disease

scholarly journals Genetic and physical analysis of the rice bacterial blight disease resistance locus, Xa21

1992 ◽  
Vol 236 (1) ◽  
pp. 113-120 ◽  
Author(s):  
Pamela C. Ronald ◽  
Beng Albano ◽  
Rodante Tabien ◽  
Lleva Abenes ◽  
Kung-sheng Wu ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Bacterial Blight ◽  
Resistance Locus ◽  
Physical Analysis ◽  
Rice Bacterial Blight ◽  
Bacterial Blight Disease ◽  
Blight Disease

scholarly journals Relationship of Bacterial Leaf Blight Disease of Cotton with Different Weather Parameters Under South Gujarat Condition of India

2018 ◽  
Vol 51 (1) ◽  
pp. 45-50
Author(s):  
P.B. Sandipan ◽  
R.K. Patel ◽  
G.O. Faldu ◽  
D.M. Patel ◽  
B.G. Solanki
Keyword(s):  
Bacterial Blight ◽  
Xanthomonas Campestris ◽  
Abiotic Factors ◽  
Environmental Parameters ◽  
Common Disease ◽  
Bacterial Disease ◽  
Cotton Production ◽  
Boll Rot ◽  
Bacterial Blight Disease ◽  
Blight Disease

Abstract Cotton is a soft, fluffy staple fiber that grows in a boll, around the seeds of the cotton plants of the genus Gossypium in the family Malvaceae. Bacterial blight of cotton, also know as angular leaf spot, boll rot, and black leg, is a potentially destructive bacterial disease of cotton production. The disease caused by Xanthomonas campestris pv. malvacearum (Smith) Dye (synonyms Xanthomonas malvacearum (E.F. Sm) Dowson) is one of the most important and serious disease in cotton crop. Main objective of present research is to study the progress of the bacterial blight disease of cotton (BLB), caused by Xanthomonas campestris pv. malvacearum (Smith) Dye, with relation to the environmental parameters. This is a common disease affecting the growth, development and yield of cotton. A field trial was conducted to determine the influence of environmental factors, viz. rainfall periods, temperature, sun shine hours and humidity on the development of disease. Bacterial blight disease was recorded with its appearance and subsequently at weekly interval till it prevailed on G. Cot. Hy.12 (Non Bt). The incidence of bacterial blight disease (BLB) was noticed during 28 to 49th standard week with the maximum disease intensity in third week of September (23.5% PDI). None of the abiotic factors had significant influence on bacterial blight disease progress and development.

scholarly journals Screening Camelia sinensis Germplasm Against Grey Leaf Blight of Tea

2017 ◽  
Vol 5 (4) ◽  
pp. 123 ◽  
Author(s):  
Asma Akbar ◽  
Gul Shad Ali ◽  
Brian Pearson ◽  
Farrukh Hamid ◽  
Sonia Sumreen
Keyword(s):  
Dry Weight ◽  
Susceptible Variety ◽  
Leaf Blight ◽  
Resistant Variety ◽  
Lesion Diameter ◽  
Leaf Weight ◽  
Number Of Leaves ◽  
Tea Plants ◽  
Blight Disease ◽  
Grey Blight

Grey blight is a foliar disease of tea plants (Camellia sinensis) caused by Pestalotiopsis. The grey blight pathogen was isolated from infected leaves of tea plants in the National Tea and High Value Crop Research Institute (NTHRI), Shinkiari, Khyber Pakhtunkhwa, Pakistan. Eight different varieties, Indonesian, Roupi, Jue King, P-5, P-3, Qi man, Chuy and P-1, were investigated for yield loss and resistance against the grey blight disease. All varieties displayed considerably different levels of resistance to Pestalotiopsis (p<0.05). The most resistant variety was Indonesian, which showed the lowest number of lesions (1.5 leaf-1) and the smallest lesion diameter (3.0 cm), whereas the most susceptible variety was P-1 which showed the highest number of lesions (3.83 leaf-1) and the largest lesion diameter (15.0 cm). The grey leaf blight pathogen significantly affected biomass and dry matter of the tested varieties. Compared to non-inoculated control, inoculation with Pestalotiopsis reduced the number of leaves by 40% (p<0.05), fresh leaf weight by 31% (p<0.05) and dry leaf weight by 59% (p<0.05). Whereas, the Indonesian variety was the least affected showing only 11% (p<0.05), 19% (p<0.05), and 28% (p<0.05) reduction in number of leaves, fresh weight and dry weight, respectively, over control. These results showed that Pestalotiopsis significantly reduced tea yield and that this disease can be managed by growing resistant varieties.

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