Working group session:
Breeding and Applied Genomics
Presentation type:
oral
Authors:
Afzal, Muhammad; Khan, Muhammad Idrees ; Hussain, Khadim; Illahi, Noor; Akbar, Muhammad
Presenter:
Hussain, Khadim
Correspondent:
Hussain, Khadim
Abstract:
Bt.CIM-598 has been developed through hybridization of a local variety CIM-446 and genetically modified (GM) cotton genotype IR-CIM-448. at Central Cotton Research Institute, (CCRI) Multan, Pakistan. It is tolerant to CLCuD with 4.19% disease index gave significantly higher yield in varietal trials, Zonal Varietal Trials at farmers’ fields and Govt. Farms in comparison with the commercial variety IR-3701 (Proposal of Bt.CIM-598 2011-12). In these trials Bt.CIM-598 gave 16.8% increase over commercial variety IR-3701 for seed cotton yield. In National Coordinated Bt. Trial, Bt.CIM-598 surpassed all the existing Bt. strains along with commercial varieties across the Punjab province, while on national level it remained at second position in Pakistan (NCVT report 2011-12). It possesses higher lint percentage (41.3%), along with the most desirable fibre traits (staple length 29.0mm, micronaire value 4.4 µg inch-1 and fibre strength 94.8 tppsi, maturity ratio 1.02 and uniformity ratio 48.9%) in the present day genetically modified cotton varieties all over the country. After detection and quantification of toxicity level of crystal protein contents in the internationally reputed national institutions of the country the variety was found positive for Cry1Ab/Ac protein with toxicity level 2.76µg g-1 and Mon 531 event. These characters lead this variety resistant to Helicoverpa armigera, Earias vittella and Pectinophora gossypiella. Higher hair density on leaves is the additional characteristics of the variety which repel the attack of jassid. Due to the unique characteristics of Bt.CIM-598 the Government of Pakistan has recommended this variety for general cultivation.