Biochemical basis of resistance in chickpea varieties against Callosobruchus chinensis Linn. (Coleoptera: Bruchidae)

Abstract

Eleven chickpea varieties were screened for their biochemical resistance to the pulse beetle (Callosobruchus chinensis L.), a serious pest of the stored pulses. The varieties were found to arrest the growth and development of C. chinensis, at grub stages which were indicated by different parameters viz., oviposition, adult emergence, weight loss, developmental period and growth index. Among the various biochemical analyzed, high growth index was observed in the varieties PKG 2 (0.61), BG 1003 (0.62), BG 1053 (0.62) and PKG 1 (0.71). Low growth index recorded in PG 3 (0.52), BGM 547 and PG 186 (0.56) may be attributed to low phenol and tannin content. Similarly the varieties PKG 1, BG 1003 and BG 1053 with less phenol, flavonoids and tannin content recorded more growth index as compared to moderate resistance varieties PG 4, PBG 1 and PG 114 PBG 1, BGM 547 and PG 114 were found to be moderately resistant and PKG 1, PKG 2, BG 1053 and BG 1003 as highly susceptible, shows the major role of trypsin inhibitor in protein resistance to C. chinensis. The highest protease activity inhibition acts as antimetabolites to C. chinensis, inhibit to the feeding of grubs as result higher trypsin content varieties showed relative resistance. The correlation between different antinutritional factors and growth index of the grub also showed a negative relationship.

ELUCIDATING THE HOST PREFERENCE BY THE PULSE BEETLE <i>CALLOSOBRUCHUS CHINENSIS</i> (L)

“…Similar finding was reported by Radha and Sushila (2014), Hosamani et al, (2018) and Jaiswal et al (2019). Development period in chick pea was in a range of 28± 0.35 days and this was almost in the range given by Swella and Mushobozy (2009) Kamble et al (2016) and Ahmad et al (2017). Maximum adult emergence was observed in green gram 120± 2 followed by cow pea and least in pea 60± 1, and those finding are in accordance with those of Deeba et al (2006) and Chandel and Bhaudaria (2015).…”

Screening of different legumes for the developmental preference of Callosobruchus maculatus (Bruchidae: Coleoptera)

“…In our findings, increased developmental time was observed in desi chickpea followed by kabuli chickpea. Ahmad et al (2017) observed total developmental period (from egg-laying to adult formation) 28.67 days to 32.33 days on various chickpea varieties. Osman et al (2015) assessed the impacts of five temperatures on C. maculatus development on chickpea grains and stated that minimum total developmental time was 20.7 days (35 °C), followed by 23.8 days (30 °C), 27.7 days (28 °C), 38.3 days (25 °C) and 77.8 days (20 °C).…”

Biochemical Components Conferring Resistance to Pigeonpea Genotypes against Callosobruchus chinensis (L.) (Coleoptera: Bruchidae) under Semitropical Storage Conditions

“…The lowest amounts of total flavonoids were recorded in ICPL 161 and ICPL 332 (0.40 and 0.36 mg/g respectively) (Table 1). Similarly, Ahmad et al, (2019) reported that flavonoids content of different chickpea varieties ranged from 0.283 to 0.466 mg/g. Rani et al, (2014) observed that flavonoids content in whole seed extract was (8.65±0.6 mg/g ) in pigeonpea.…”