Interaction effects of different amounts of zinc(Zn) and boron(B) on growth and antioxidative enzymes activity in lettuce(Lactuca sativa L. cv. Paris Island) plant

Subject Areas : plant physiology

Farhad Behtash ¹ , Hadi Fakhr ghazi ² , Masoomeh Hasanbarani ³

1 - Assistant of professor , Department of Horticultural science Faculty of Agriculture, University of Maragheh,East Azarbaijan,Iran.
2 - Student, Maragheh Agriculture School, East Azarbaijan,Iran.
3 - Ph.D Graduate, Plant systematic, Science and Research, Islamic Azad University, Tehran, Iran.

Received: 2022-07-14 Accepted : 2022-09-01 Published : 2022-09-20

Keywords: Yield, Micro elements, Enzymatic activity, Hoagland's nutrient solution, Hydropoics,

Abstract :

One of the principle factors influencing the plant's growth parameters and yield is nutrition with micro-elements. Boron and zinc are dominant micro-nutrients directly or indirectly affect the plants biochemical potential and hence the yield of plants. In the present experiment, we aimed to study the effects of Zn and B on some growth attributes and quality of Lactuca sativa L. cv. 'paris island'. The experiment was conducted at the Research Greenhouse of the University of Maragheh as factorial based on CRBD with Zn (0, 5 and 10 mg L-1) from ZnSO4,7H2O and B from H3BO3 at three levels (0, 2 and 4 mg L-1 ) with three replications. The results revealed that with increasing Zn concentrations in the nutrient solution, the fresh weight, dry weight, chlorophyll index, chlorophylls a and b content, total chlorophylls content, carotenoids amount, soluble proteins concentration and Zn concentration were increased in the lettuce leaf tissue (p≤0.01). Furthermore, with increasing nutrient solution's B concentration, the proline, MDA, GPX, CAT and APX levels and activities as well as the boron content in the plant tissue were significantly influence and increased. Zn up concentrations under boron high availability reduced the aforementioned traits quantities (p≤0.01).