Screening of Chickpea Genotypes against Pulse beetle, Callosobruchus chinensis (L.) Resistance under the Laboratory Conditions.
Loading...
Date
2018
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur)
Abstract
Screening of chickpea genotypes against Callosobruchus chinensis resistance with the biophysical and biochemical parameters, observations in the laboratory in the Department of Entomology at Dr. Rajendra Prasad Central Agricultural University, Pusa during 2016-17, the results indicated that C1025 (97.22 eggs) was highly preferred for egg laying by C. chinensis while, C1021 (46.82 eggs) was found least preferred for oviposition. The minimum per cent adult emergence was observed on C1088 (59.14%) and the maximum percent adult emergence was observed on C1022 (76.22%). The maximum time for the development on C1021 (30.06 days).The minimum developmental period was recorded on C1120 (24.90 days). BG256 was found to be least susceptible to the attack by C. chinensis showing lowest growth index (2.09). The C1120 was found to be highly susceptible for the attack of beetle showing the highest growth index (3.10). The per cent loss in weight varied from maximum of 47.76% on C1025 to minimum of 09.81% on C1147.
The results indicated that seed coat thickness ranged from 0.09 to 0.31 mm with maximum in C1064 (0.31 mm) and minimum in C1021 (0.09 mm). 100 seed weight ranged from 13.88 to 31.53 grams with maximum in BG 256 (38.03g) and minimum in C1063 (13.88g). The female beetle laid the lowest number of eggs on rough and small seeds of C1021, however, it preferred to highest number of eggs on smooth and medium seeds of C1025. None of the genotypes were completely resistant to the attack of C. chinensis differed in the resistance, which may seems to be due to the physical seed characters (colour, shape, size , texture, seed coat thickness and 100 seed weight) of chickpea genotypes.
The results indicated that genotype C1120 (22.77g/100 grams of seed) with high protein content recorded high growth index (3.10) indicating that the genotypes were more preferred by the C. chinensis. On the other hand, low growth index on BG256 (18.56g./100 grams of seed) genotype may be attributed to low protein content. Genotypes C1022, C1121, C1021, C1063, C1023 with less phenol content had more growth index as compared to less susceptible genotypes C1156, C1088, and BG372 which showed less growth index. The genotype C1120 (0.39 mg/g) with less flavonoids content had high growth index as compared to moderately susceptible genotypes C1022 (0.76 mg/g seed) and less susceptible genotypes BG256 (0.88 mg/g).The lowest tannin content was drowned in genotypes, C1088 (0.260). However, highest tannin content was recorded in genotypes C1025 (0.433).
Description
Keywords
null