TY - JOUR AU - Shah, J. A. AU - hassan, Zia-ul- AU - Rajpar, I. AU - Sial, M. A. PY - 2014/12/31 Y2 - 2024/03/29 TI - EVALUATING BORON-USE-EFFICIENCY OF TWENTY COTTON GENOTYPES OF PAKISTAN JF - Pakistan Journal of Agriculture, Agricultural Engineering and Veterinary Sciences JA - PJAAEVS VL - 30 IS - 2 SE - Articles DO - UR - https://pjaaevs.sau.edu.pk/index.php/ojs/article/view/179 SP - 147-158 AB - <p>Boron (B) deficiency has been identified as a major yield limiting factor for sustainable cotton production around the globe, including Pakistan. Identification and adoption of B-use-efficient cotton genotypes is therefore crucial for low-B-input sustainable cotton production. A pot experiment was conducted in a completely randomized design with four repeats to categorize 20 selected cotton genotypes of Pakistan for their B-use-efficiency involving deficient (0 kgha<sup>-1</sup>) and adequate (2 kgha<sup>-1</sup>) levels of B. The cotton genotypes were ranked following two different methods to ensure ranking validity. Boron deficiency generally reduced biomass production and B uptake of all cotton genotypes. However, B-use-efficient cotton genotypes accumulated more B and produced more biomass under B-deficiency stress. Boron deficiency reduced plant height, number of leaves per plant, leaf area, shoot dry weight, shoot B accumulation and shoot B uptake of all genotypes (by 6, 14, 15, 8, 26 and 31%, respectively). Genotype CRIS-342 was ranked as ‘non-efficient’ due to its low biomass production under B-deficiency stress. Interestingly, cotton genotype IR-NIBGE-1524 exhibited wide adaptation at both the levels of B and hence ranked ‘efficient-responsive ’cotton genotype. The study concluded that the IR-NIBGE-1524 could be the most potential candidate for both the low- and high-B-input sustainable agriculture.</p> ER -