scholarly journals QTL Mapping of Traits Associated with Dual Resistance to the African Stem Borer (Busseola fusca) and Spotted Stem Borer (Chilo partellus) in Sorghum (Sorghum bicolor)

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Phyllis W. Muturi ◽  
Mary Mgonja ◽  
Patrick Rubaihayo ◽  
James K. Mwololo
Keyword(s):  
Grain Yield ◽  
Sorghum Bicolor ◽  
Chilo Partellus ◽  
Insect Pests ◽  
Busseola Fusca ◽  
Stem Borer ◽  
Seedling Vigour ◽  
Leaf Toughness ◽  
Spotted Stem Borer ◽  
Resistance Traits

Sorghum (Sorghum bicolor (L.) Moench) is an important food crop in semi-arid tropics. The crop grain yield ranges from 0.5 t/ha to 0.8 t/ha compared to potential yields of 10 t/ha. The African stem borer Busseola fusca Fuller (Noctuidae) and the spotted stem borer Chilo partellus Swinhoe (Crambidae), are among the most economically important insect pests of sorghum. The two borers can cause 15% - 80% grain yield loss in sorghum. Mapping of QTLs associated with resistance traits to the two stem borers is important towards marker-assisted breeding. The objective of this study was to map QTLs associated with resistance traits to B. fusca and C. partellus in sorghum. 243 F9:10 sorghum RILs derived from ICSV 745 (S) and PB 15520-1 (R) were selected for the study with 4,955 SNP markers. The RILs were evaluated in three sites. Data was collected on leaf feeding, deadheart, exit holes, stem tunnels, leaf toughness, seedling vigour, bloom waxiness, and leaf glossiness. ANOVA for all the traits was done using Genstat statistical software. Insect damage traits and morphological traits were correlated using Pearson’s correlation coefficients. Genetic mapping was done using JoinMap 4 software, while QTL analysis was done using PLABQTL software. A likelihood odds ratio (LOD) score of 3.0 was used to declare linkage. Joint analyses across borer species and sites revealed 4 QTLs controlling deadheart formation; 6 controlling leaf feeding damage; 5 controlling exit holes and stem tunneling damages; 2 controlling bloom waxiness, leaf glossiness, and seedling vigour; 4 conditioning trichome density; and 6 conditioning leaf toughness. Joint analyses for B. fusca and C. partellus further revealed that marker CS132-2 colocalised for leaf toughness and stem tunneling traits on QTLs 1 and 2, respectively; thus, the two traits can be improved using the same linked marker. This study recommended further studies to identify gene(s) underlying the mapped QTLs.

scholarly journals Inheritance of resistance to spotted stem borer, Chilo partellus, in sorghum, Sorghum bicolor

Euphytica ◽  
2007 ◽  
Vol 156 (1-2) ◽  
pp. 117-128 ◽  
Author(s):  
H. C. Sharma ◽  
M. K. Dhillon ◽  
G. Pampapathy ◽  
B. V. S. Reddy
Keyword(s):  
Sorghum Bicolor ◽  
Chilo Partellus ◽  
Stem Borer ◽  
Inheritance Of Resistance ◽  
Spotted Stem Borer

Efficacy of some insecticide modules against major insect pests and spider population of rice, Oryza sativa L.

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 257-262
Author(s):  
Atanu Seni ◽  
Bhimasen Naik
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Untreated Control ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Gall Midge ◽  
Stem Borer ◽  
The Other ◽  
The Third ◽  
Treated Plot

Experiments were carried out to assess some insecticide modules against major insect pests of rice. Each module consists of a basal application of carbofuran 3G @ 1 kg a.i ha-1 at 20 DAT and Rynaxypyr 20 SC @ 30 g a.i ha-1 at 45 DAT except untreated control. All modules differ with each other only in third treatment which was applied in 65 DAT. The third treatment includes: Imidacloprid 17.8 SL @ 27 g a.i ha-1, Pymetrozine 50 WG @ 150 g a.i ha-1, Triflumezopyrim 106 SC @ 27 g a.i ha-1, Buprofezin 25 SC @ 250 g a.i ha-1; Glamore (Imidacloprid 40+Ethiprole 40% w/w) 80 WG @ 100 g a.i. ha-1, Thiacloprid 24 SC @ 60 g a.i ha-1, Azadirachtin 0.03 EC @ 8 g a.i ha-1, Dinotefuran 20 SG@ 40 g a.i ha-1 and untreated control. All the treated plots recorded significantly lower percent of dead heart, white ear- head caused by stem borer and silver shoot caused by gall midge. Module with Pymetrozine 50 WG @ 150 g a.i ha-1 treated plot recorded significantly higher per cent reduction of plant hoppers (>80% over untreated control) and produced higher grain yield (50.75 qha-1) than the other modules. Among the different treated modules the maximum number of spiders was found in Azadirachtin 0.03 EC @ 8 g a.i ha-1 treated module plot followed by other treatments.

Factors responsible for estivation in spotted stem borer, Chilo partellus (Swinhoe)

2019 ◽  
Vol 331 (6) ◽  
pp. 326-340 ◽  
Author(s):  
Mukesh K. Dhillon ◽  
Fazil Hasan ◽  
Aditya K. Tanwar ◽  
Amarpal S. Bhadauriya
Keyword(s):  
Chilo Partellus ◽  
Stem Borer ◽  
Spotted Stem Borer

scholarly journals Rearing of Maize Stem Borer, Chilo partellus (Lepidoptera: Crambidae) under Laboratory Conditions

2021 ◽  
Vol 2 (3) ◽  
pp. 22-26
Author(s):  
Muhammad Ijaz ◽  
Keyword(s):  
Chilo Partellus ◽  
Insect Pests ◽  
Agricultural Research ◽  
Larval Instar ◽  
Stem Borer ◽  
Raw Material ◽  
Research Centre ◽  
Maize Production ◽  
Laboratory Conditions ◽  
The Mean

Maize is an important cereal crop grown for food, fodder and raw material throughout the world. It is rick source of proteins, carbohydrates and vitamins. Maize production is decreasing day by day due to attacked of more than 250 insect species and mites. Among insect pests, maize stem borer, Chilo partellus is most destructive pest for maize production. The rearing of maize stem borer, C. partellus was conducted under laboratory conditions in National Agricultural research Centre (NARC) Islamabad. The complete metamorphosis (egg, larva, pupa and adult) was recorded in C. partellus. The mean value of egg was 4.67 ± 1.09 days. There were six larval instar of C. partellus and total larval period was 18-48 days. The growth period of first, second, third, fourth, fifth and sixth larval instar was 3-6, 2-6, 3-7, 3-8, 3-9 and 5-11 days respectively on maize leaves. The mean average duration of pupa was 9.00±2.25 days. The female was long lived than male. The total developmental period from egg to adult was 30-65 days.

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