Effect of Priming on Germination and Initial Growth of Melon Plants Under Salt Stress

Abstract

The objective of this work was to evaluate the effect of different osmotic agents and priming durations on the germination and initial growth of melon in salinity. The osmotic agents were NaCl and CaCl 2 and durations 2 and 4 days. First a response curve of germination to salinity was made. After priming the seeds were placed to germinate in a saline medium (14 dS m -1 ). The germination percentage was determined. The two treatments with the best results (NaCl and CaCl 2 2 days in both salts) were selected to evaluate the initial growth of the plants in salinity. It was sown in pots, irrigated with nutrient solution and 60 mM NaCl. The germination was reduced to 50% with 14 dS m -1 and inhibited with 22 dS m -1 . The best germination was achieved with NaCl and CaCl 2 2 days with 99 and 94% respectively. Both treatments showed an increase in growth parameters and chlorophyll content.

NADPH oxidase-mediated reactive oxygen species, antioxidant isozymes, and redox homeostasis regulate salt sensitivity in maize genotypes

“…The heatmap also demonstrates Pro accumulation under salt stress. Castañares et al [ 119 ] demonstrated significant Pro accumulation in melon under salt stress.…”

Invigorasi Osmoconditioning dengan Kalsium Klorida untuk Perbaikan Mutu Fisiologis Benih Padi Hitam Lokal (<em>Oryza sativa </em>L.)

“…Perlakuan priming telah terbukti bermanfaat dalam invigorasi benih selama penyimpanan, selain itu juga dapat meningkatkan, mempercepat dan menyeragamkan perkecambahan serta pembentukan bibit, mengatasi atau mengurangi berbagai tipe dormansi, serta meningkatkan perkecambahan dan pembentukan bibit pada kondisi lingkungan yang tidak menguntungkan. Manfaat dari priming tidak terkhusus pada tahap perkecambahan saja, namun dapat berdampak pada fase selanjutnya, yaitu dengan meningkatkan tolensi terhadap perbedaan tekanan biotik dan abiotik (Castanares & Bouzo, 2017 Tabel 5 dan 6 menunjukkan tidak adanya beda nyata antara benih baru dengan benih lama, sedangkan benih lama kontrol dengan perlakuan terdapat beda nyata. Hal ini menunjukkan bahwa dari perlakuan memberikan nilai bobot segar dan bobot kering yang lebih tinggi daripada benih lama tanpa perlakuan.…”