Responses of chickpea selections against Helicoverpa armigera (Hubner) attack
| dc.contributor.advisor | Ram Ujagir | |
| dc.contributor.author | Nandini Kumari | |
| dc.date.accessioned | 2019-12-14T07:07:42Z | |
| dc.date.available | 2019-12-14T07:07:42Z | |
| dc.date.issued | 2006-08 | |
| dc.description.abstract | Field screening of 22 International Nursery chickpea genotypes and 33 least susceptible genotypes along with check cultivars against H. armigera was carried out at Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar during Rabi seasons of 2004-05 and 2005-06. Screening under natural filed conditions revealed that among 22 least susceptible chickpea genotype and mean egg population/plant varied between 1.0 and 3.1 during Rabi 2004-05, while in Rabi 2005-06 egg population/plant varied between 1.2 and 2.5 eggs/plant. The mean larval population varied between 2.5 and 4.5 larvae/plant during 2.004-05 and 1.7 and 3.3 larvae/plant during 2005-06. Among 33 least susceptible chickpea genotypes the egg population per plant varied between 1.7 to 3.1 eggs/plant during Rabi 2004-05. During 2005-06 the egg population varied between 1.5 to 2.8 eggs/plant, whereas the mean larval population varied between 3.4 to 6.4 larvae/plant during 2004-05 and 2.4 to 5.2 larvae/plant during 2.005-06. Mean pod borer damage in case of 22 least susceptible genotype varied from 54.0% to 76.9% and in case of 33 least susceptible genotypes it varied from 12.0% to 49.9% screening lead to the identification of RIL 85, RIL 51, ICC 67, ICC 16261 and ICC 506 as less susceptible. In case of 33 least susceptible genotypes, IC 269160, IC 269161, IC 269272, IC 269307, IC 269375 and IC 269399 were found to be least susceptible. Rest of the genotype were reported either moderately susceptible or highly susceptible against H. armigera. Grain yield obtained during 2005-06, ranged from 1185.2 kg/ha to 3148.1 kg/ha in case of 22 least susceptible genotypes. In case of 33 genotypes, it ranged from 9.3 to 29.8 g/6 plants. The cultivars, RIL 51 and IC 269327 gave significantly greatest grain yield. The results of laboratory experiments showed that among 22 selection chickpea genotypes maximum larvae, 68.0% survived on ICC 16207 and minimum 20.0% on ICCC 37. The larval period varied from 13.0 days to 15.6 days and larval weight ranged from 0.12 g to 0.18 g. Pupation varied from 40% to 60% and pupal weight varied from 0.16 g to 0.22 g. Among 33 least susceptible chickpea genotypes, maximum larvae 72.5% survived on IC 269159 and minimum 45.0% on IC 269160, IC 269161 and IC 269195. The larval period varied from 13.0 days to 15.6 days and larvae weight ranged from 0.64 g to 1.14 g. Pupation varied from 40% to 80% and pupal weight varied from 0.15 g to 0.26 g. The entries RIL 5\85, RIL 51, ICC 67, ICC 16261, ICC 506, IC 269311 and IC 269375 proved resistant on the basis of multicomponent analysis and can be used as sources of resistance against H. armigera. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810137719 | |
| dc.keywords | chickpeas, selection, insect pests, Helicoverpa armigera (Hubner) attack | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 121 | en_US |
| dc.publisher | G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand) | en_US |
| dc.research.problem | Chickpeas | en_US |
| dc.sub | Entomology | en_US |
| dc.subject | null | en_US |
| dc.theme | Insect Pests | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Responses of chickpea selections against Helicoverpa armigera (Hubner) attack | en_US |
| dc.type | Thesis | en_US |