Micronutrient Content in Relation to Specific Leaf Area, Light Regime and Drenched-Applied Paclobutrazol in Lantana Camara L.

Abstract

Iron and manganese are essential microelements on plant growth but no information is known with regard to their content on Lantana camara L. subsp. camara (lantana) treated with drenched-applied paclobutrazol. Thus, the effects of drenched-applied paclobutrazol [0 (control), 40, and 80 mg l-1] on leaf iron and manganese contents of lantana plants were investigated testing two light regimes, resulted from the establishment of different shading levels, 0% (daily light quantity of 27.8 mol m-2 d-1) and 66% (9.4 mol m-2 d-1) in a glasshouse in Attica, Greece. Possible correlations between the studied minerals contents (iron and manganese) and specific leaf area were examined. Analysis of variance showed that iron and manganese contents were affected by shading level, paclobutrazol, their interaction and paclobutrazol, respectively. Iron content increased significantly after treatments with paclobutrazol, compared to control, at full light environment (0% shading). Leaf manganese content presented no significant increase with the increasing paclobutrazol concentrations at 0% and 66% shadings. No significant differences were noted (dispensing control plants) on iron and manganese contents, when examining plants which were treated with the same paclobutrazol concentration, between the studied light environments. From the linear correlation analysis, manganese content exhibited a significant negative correlation with specific leaf area which was not shown by the iron content. The results of the present study could contribute to establishing iron and manganese sufficiency ranges on L. camara, especially after treatments with different light environments and paclobutrazol

Controlling Growth of Sanchezia Plant by Foliar Application of Micronutrients and Paclobutrazol

“…The interaction between micronutrients and paclobutrazol was significant for aforementioned traits in both seasons. The highest Mazher et al (2014) and Matsoukis et al (2015). …”

“…On the contrary foliar application of paclobutrazol to Scheffleraarboricola plant (Mazher et al, 2014) increasedstem diameter, number of leaves plant -1 , leaf area, fresh and dry weight for all the plant organs, pigment contents, total carbohydrates and mineral contents (N, P and K) in leaves and stems. Matsoukis et al (2015) reported thatapplication of paclobutrazol to Lantana Camaraplant increased leaf contents of iron and manganese.…”

“…For producing appropriately-sized plants, maintaining quality prior to sale, promoting shelf-life, and improving aesthetic quality, proper fertilization is demandedin both macro-and micronutrient after paclobutrazolapplications (Matsoukis et al, 2015). Micronutrients play distinct and vital roles in plant physiological and biochemical processes (Putra et al, 2012).…”