Morpho Physico-Chemical Components of Resistance to Pod Borer, Helicoverpa armigera (Hübner) in Pigeonpea [Cajanus cajan (L.) Millspaugh]

2019 ◽  
Author(s):  
B. L. Jat ◽  
K. K. Dahiya ◽  
S. S. Yadav ◽  
S. Mandhania
Keyword(s):  
Helicoverpa Armigera ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Chemical Components ◽  
Total Soluble Sugar ◽  
Components Of Resistance ◽  
Pod Borer ◽  
Physico Chemical ◽  
Sowing Dates ◽  
Helicoverpa Armígera

The experiments were conducted at CCS HAU, Hisar (Haryana) to study the morpho physico-chemical components of resistance to pod borer, Helicoverpa armigera in pigeonpea with different sowing dates. In different four sowing dates, the minimum pod infestation (1.70%) was recorded in (D4) 3rd week of July sown crop, whereas, it was observed maximum (4.54%) in (D2) 1st week of July sown crop. In different pigeonpea varieties, the minimum mean pod infestation (2.45%) was recorded in AL-201, whereas, the maximum mean pod infestation (3.72%) was recorded in Pusa-992. The glandular (type A) and non-glandular (type B) trichomes on pods of top and middle canopy of the plant and pod wall thickness were associated with resistance to H. armigera, whereas, the non-glandular lengthy (type C) trichomes and pod length were associated with susceptibility to this insect. The expression of resistance to H. armigera was also associated with the high amount of fat, phenol and tannin content. Crude protein and total soluble sugar content were responsible for higher pod infestation.

scholarly journals Incidence and Damage Severity of Pod Borer, Helicoverpa Armigera (Hubner) in Chickpea (Cicer Arietinum L.)

1970 ◽  
Vol 44 (2) ◽  
pp. 221-224 ◽  
Author(s):  
M Altaf Hossain ◽  
A Azizul Haque ◽  
MZH Prodhan
Keyword(s):  
Key Words ◽  
Cicer Arietinum ◽  
Helicoverpa Armigera ◽  
Agricultural Research ◽  
Research Station ◽  
Population Fluctuations ◽  
Lower Yield ◽  
Pod Borer ◽  
Sowing Dates ◽  
Helicoverpa Armígera

Incidence, population fluctuations and damage severity of pod borer, Helicoverpa armigera (Hubner) chickpea was studied at Regional Agricultural Research Station, Ishurdi, Pabna, Bangladesh during rabi crop seasons of 2003-04 and 2004-05. The incidence started in 2nd to 4th week of January irrespective of sowing dates. The borer population fluctuated depending on the dates of sowing. Pod borer population was higher in the early sown crops (October 15 to November 01) and with delayed the dates of sowing from November 01 to 30 population was decreased and then increased again. It was observed that both the early (October 15 to November 01) and late sown (December and onward) crops received higher pod borer damage and produced lower yield. But mid sown (November 08 to 30) crops received less pod borer damage and produced higher yield. Hence, for ensuring higher yield with less pod borer damage, chickpea should be sown within the range of November 08 to 30 and the best date of sowing seems to be November 15. Key words: Chickpea, Pod borer, Population fluctuation, Damage severity, Yield. DOI: 10.3329/bjsir.v44i2.3676 Bangladesh J. Sci. Ind. Res. 44(2), 221-224, 2009

​​Morphological and Chemical Components of Resistance to Pod Borer, Helicoverpa armigera (Hübner) in Chickpea Germplasm

2021 ◽  
Author(s):  
S.D. Divija ◽  
Meena Agnihotri ◽  
M.S. Sai Reddy
Keyword(s):  
Helicoverpa Armigera ◽  
Cost Effective ◽  
Chemical Components ◽  
Limiting Factor ◽  
Great Economic Importance ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Field And Laboratory Conditions ◽  
Environmentally Friendly Approach ◽  
Helicoverpa Armigera Hubner

Background: Chickpea pod borer (CPB), Helicoverpa armigera (Hübner) is a pest of great economic importance in chickpea and it is the major limiting factor in chickpea cultivation. In severe cases it causes about 75 to 90 per cent losses in seed yield, despite the application of insecticides. Therefore, development of a cost effective and an environmentally friendly approach like improvement of cultivars resistant to H. armigera is necessary for management of the pest in chickpea. Methods: Morphological and chemical components of host plant resistance in chickpea germplasm was assessed under field and laboratory conditions against pod borer, Helicoverpa armigera at hotspot Pantnagar, during rabi, 2017-18 using standard protocols. Result: Observations recorded revealed that germplasm ICC4484 recorded highest phenol (4.73 mg/g) and flavonoid (0.19 mg/g) content, whereas the maximum tannin, protein and trypsin content were recorded in ICC6263 (1.33 mg/g), ICC3137 (19.41 g/100 g of seeds) and ICC372351 (31.83 IU/g), respectively. Germplasm with higher phenol, tannin, flavonoid and trypsin inhibitor content recorded minimum per cent pod damage. Phenol, tannin, flavonoid, trypsin content showed negative correlation, while protein content showed positive correlation with the per cent pod damage by H. armigera.

scholarly journals Biochemical basis of resistance to pod borer ( Helicoverpa armigera ) in Australian wild relatives of pigeonpea

2021 ◽  
Author(s):  
Prameela Vanambathina ◽  
Rao C. N. Rachaputi ◽  
Yasmina Sultanbawa ◽  
Anh Dao Thi Phan ◽  
Robert J. Henry ◽  
...  
Keyword(s):  
Helicoverpa Armigera ◽  
Wild Relatives ◽  
Biochemical Basis ◽  
Pod Borer ◽  
Helicoverpa Armígera

scholarly journals PHYSICO-CHEMICAL CHARACTERIZATION OF COCONUT ECOTYPES IN BENIN COASTAL ZONE

2021 ◽  
Vol 9 (8) ◽  
pp. 215-225
Author(s):  
Ulysse Ayihaou Daa-Kpode ◽  
Patrice Hodonou Avogbe ◽  
Gustave Djedatin ◽  
Daniel Datchiglo ◽  
Aristide Bakpe ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Nutritional Value ◽  
Ph Value ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Chemical Characterization ◽  
Titratable Acidity ◽  
Total Sugar Content ◽  
Physico Chemical

Coconut water is highly consumed for refreshment due to its nutritional value. However, its nutritional value varies according to the ecotype and stage of maturity of ecotype. In order to identify best ecotypes with high nutritious value, a physico-chemical composition of ten (10) ecotypes was performed at earlier stage of maturity (3 months). The measured parameters were: coconut height, mass of water, total sugar content, soluble sugar content, protein, titratable acidity and pH.  The obtained results showed that all parameters vary from one ecotype to another. All coconut ecotypes contain water slightly acid with a pH value less than 7.  Furthermore, there is no relationship between physical and biochemical parameters. However, within characterized ecotypes, Ecotype_2, appeared to have the best biochemical composition with a significant amount of water. This study provided important informations related to physico-chemical characteristics of coconuts ecotypes found in the coastal zone.

Comparative Efficacy of Various Insecticides to Control Gram Pod Borer (Helicoverpa armigera Hubner) on Chickpea

2003 ◽  
Vol 2 (4) ◽  
pp. 403-405 ◽  
Author(s):  
Abdul Rashid ◽  
Habib Ahmad Saeed . ◽  
Lal Hussain Akhtar . ◽  
Sabir Zameer Siddiqi . ◽  
Muhammad Arshad .
Keyword(s):  
Helicoverpa Armigera ◽  
Comparative Efficacy ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Helicoverpa Armigera Hubner
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