Effect of Ecklonia Maxima extract in accretion of symbionts at heteroplasmic grafting of some watermelons

Abstract

The research was conducted to determine the effect of the extracts of Ecklonia maxima specie (sea bamboo) in the symbiots accretion at the heteroplasmic grafting of some watermelons. The experimental variants consisted in grafted plants, combinations between cultivars of species Citrullus lanatus, Cucurbita maxima x C. moschata and Lagenaria siceraria. The scions belong to a Romanian variety, 'Dochiţa' and three F1 hybrids, 'Baronesa', 'Carol' and 'Sorento'. The rootstocks were two F1 hybrids, 'Cobalt' and Emphasis'. The algae extract used contains auxins (11 mg/L) and cytokinins (0.3 mg/L). There were applied two treatments before grafting, foliar on scions and rootstocks, 1 mL/500 mL water and a treatment at grafting, on soil, 5 mL/L water. The control variant was free of hormones extract. There were made determinations, observations and interpretations concerning the algae effect on the symbionts accretion. The best results on E. maxima extract treatment were obtained on watermelons grafted on 'Cobalt', then watermelons grafted on 'Emphasis'.