Population genetic diversity and structure of Tephritis angustipennis and Campiglossa loewiana (Diptera: Tephritidae) based on COI DNA barcodes in the three-river source region, China

Journal of Insect Science, Journal Year: 2024, Volume and Issue: 24(4)

Published: July 1, 2024

Abstract Tephritis angustipennis (Diptera: Tephritidae) and Campiglossa loewiana are phytophagous pests in China. Their damage has significantly impacted the collection cultivation of germplasm resources native Asteraceae plants. However, genetic characteristics structure their population unclear. This study focused on highly damaging species T. C. collected from three-river source region (TRSR). We amplified mitochondrial cytochrome C oxidase subunit I (mtCOI) gene sequences these this area compared them with COI GenBank. also analyzed diversity structure. In angustipennis, 5 haplotypes were identified geographic locations; differentiation between France FRPY (from Nylandia, Uusimaa) China populations GLJZ Dehe Longwa Village, Maqin County), GLDR Zhique Dari GLMQ Rijin County) was strongest. exhibited strong GLMQ, relatively low flow. For loewiana, 11 Chinese GLMQ-YY Yangyu Forest Farm, Finnish FDNL strongest, flow, possibly due to geographical barriers Qinghai–Tibet plateau. Only 1 haplotype across GLDR, GLBM. High flow distant locations indicates that human activities or wind dispersal may facilitate fruit flies different geographic. Geostatistical analysis suggested a recent expansion 2 TRSR. Our findings provide technical references for identifying TRSR theoretical support managing resistance, monitoring pest occurrences, analyzing environmental adaptability, formulating biological control strategies Tephritidae

Language: Английский

Mitochondrial genetic homogeneity of South American leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in Tamil Nadu, India

Journal of Applied and Natural Science, Journal Year: 2023, Volume and Issue: 15(3), P. 978 - 986

Published: Sept. 19, 2023

The South American leafminer, Tuta absoluta is an exotic devastative pest on solanaceous vegetables, including tomatoes, which leads to a cent per economic loss in India. molecular markers assist assessing gene flow, migratory frequencies, and genetic variety, as well helping evaluate the makeup diversification of species population indigenous ones. With this, present study aimed investigate divergence T. different districts Tamil Nadu, depicted examination by aiding amplified region mitochondrial DNA encoding cytochrome oxidase I (COI) from samples gathered Coimbatore, Dharmapuri Dindigul Nadu. findings showed that phylogenetic tree constructed all sequences acquired NCBI (National Center for Biotechnology Information) BOLD (The Barcode Life Data System) databases exhibited 99 percent identity aggregated together into single clade. . 5Hence, revealed great uniformity populations India corroborates most globe rely partial COI gene, evidenced minimal nucleotide diversity.

Language: Английский

Evaluation of DSSAT CROPGRO model on growth and yield of pigeonpea cultivars under different fertigation levels

Journal of Applied and Natural Science, Journal Year: 2023, Volume and Issue: 15(3), P. 1071 - 1079

Published: Sept. 19, 2023

Crop modelling can make it easier for researchers to comprehend and describe experimental results pinpoint yield disparities. In this competition, the impact of pigeonpea growth under various fertigation levels was examined using Decision Support Systems Agrotechnology Transfer 4.6 (DSSAT) CROPGRO models. Under drip fertigated levels, cultivars received nutrient doses. The model developed by DSSAT-CROPGRO successfully simulated measured grain yield. field trials took place in Coimbatore at millet breeding facility Tamil Nadu Agricultural University. study ran GLUE coefficient estimator estimate cultivar coefficients until had a good match between predicted observed seed accuracy calculating its R-squared, RMSE, NRMSE, Agreement percentage. According simulation measurements, 125% RDF via WSF + Azophosmet foliar spray 1% PPFM resulted highest output 1875 kg ha-1(V1F5) over both years. increase with (V1F5) 8.0 - 11.0% when compared 100% (V1F4)12.9 16.1 % through WSF; 68.0 74.3 conventional fertilizer. It indicated that DSSAT v.4.6 be helpful tool determining forecasting if is appropriately calibrated. Simulation models substantially facilitated maximizing crop generating management advice.

Language: Английский