Salinity tolerance and site of K+ accumulation in four maize varieties grown in Khyber Pakhtoonkhwa region of Pakistan

Dynamic Chiropractic

Ikram Ullah¹  Asad Zia²  Mubarak Ali Khan³  Bin Guo⁴  Riaz Ahmad⁵ 

[1] (Northwest University), Ministry of Education, School of Life Science, North west University, Xi'Department of Biotechnology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan.;Institute of Biotechnology and Genetic Engineering, Agricultural University Peshawar, Khyber Pakhtoonkhwa, Pakistan.;Key Laboratory of Resource Biology and Biotechnology in Western China an710069, China.

关键词: Maize;    salinity;    stress;    Pakistan;    biomass.;   

DOI  :  

学科分类：医学（综合）

来源: MPA Media

【 摘 要 】

Crops face different types of biotic and abiotic stresses. Among abiotic stresses, salinity is very harmful and adversely affects the yield and production of crops. In Pakistan, maize is the third most important cereal crop after wheat and rice. In this research work, salt stress was applied to four maize varieties. The experiment was conducted in glass house. The effect of salinity on some physiological parameters that is, fresh and dry biomass of whole plant, above ground part and root of maize (Zea maysL.) was observed and the site of plant which accumulates K+was determined. Five salinity levels of 30, 60, 110, 160 and 240 mmol each for NaCl and KCl were checked. The results showed that NaCl had significant effect on fresh and dry whole plant biomass, above ground biomass and root biomass. KCl had significant effect on whole plant fresh biomass and above ground dry biomass while its effect on above ground, root fresh biomass, whole plant and root dry biomass was insignificant. The combined effect of NaCl and KCl was also insignificant on fresh as well as dry biomass. With increasing salinity however, the cultivar Azam followed by Pop-2006 were the most tolerant to salinity. Contrarily, Pahari and Sarhad white were the least salinity tolerant varieties. Flam photometric analysis indicate that K+accumulates in roots and above ground biomass (shoot), accumulation is more in the shoot than in the root. Azam and Pahari cultivars accumulated less K+than Pop-2006 and Sarhad white.

【 授权许可】

Unknown