Genetic variability and molecular responses of root penetration in cotton

摘要: Abstract Compacted soils restrict root penetration hindering productivity. In this paper, genetic variability of cotton (Gossipium spp.) capacity to penetrate hard soil layers and the patterns gene expression during event were investigated. To mimic layers, wax–petrolatum mixtures used. Genetic among 27 genotypes for disks 500–700 g wax/kg mixture was high indicating that breeding efforts targeted improve trait can be successful. tips a strain with penetrating ability (G. hirsutum HS 200) which penetrated through (P), quantity four polypeptides molecular weights 35–66 kDa increased compared those grew in absence mechanical impedance (NP). Differential display showed significant differences sets mRNA expressed P NP roots. Out total 917 cDNAs scored differential experiment, 118 cDNAs, or 13%, specific roots hence could associated event. Further detailed study will pinpoint factors involved cotton.