STUDY ON PRIMING METHODS TO ENHANCE THE VIABILITY AND VIGOR OF TREMA (Trema orientalis LINN. BLUME) SEEDS

Abstract

STUDY ON PRIMING METHODS TO ENHANCE THE VIABILITY AND VIGOR OF TREMA (Trema orientalis Linn. Blume) SEEDS. Trema is one of tropical forest trees that have many advantages such as wood for construction, pulp and charcoal, leaves for medicine and bark for dye material. One constrain of the development of this species is the difficulties of the germination of the seeds and rapid seed deterioration after storing. Therefore, there should be found a method to solve the problem. This paper determines the proper method of priming to enhance the viability and vigor of Trema seeds after storage. Randomized Complete Design was employed in this trial by priming the seeds before and after storage. The treatments were priming methods including: control (no priming), matriconditioning with ash, osmoconditioning by soaking into 5% H 2 O 2 , humidify with water and hydrated-dehydrated process. The observed parameters were germination percentages, speed of germination, mean daily germination, germination value, and growth uniformity value. Results show the best treatment method for priming of seed of trema, both before storage and after storage is the treatment of hydration-dehydration. All the observed parameters gave increased values after using such treatment. Before storage, it could increase the value of germination percentage and speed of germination by 15% and 0.9%-etmal , respectively. After storage, treatment hydration-dehydration could increase the germination by 17% and the speed of germination by 1.25%-etmal .

Trema orientale (L.) Blume: A review of its taxonomy, traditional uses, phytochemistry, pharmacological activities and domestication potential

“…Yet only a small fraction may germinate under favourable conditions due to the dormant nature of the seeds [ 95 , 96 ]. Though several species of birds aid in the seed dispersal of T. orientale , fleshly ripe fruits rarely germinate and mostly decay especially in storage [ [97] , [98] , [99] ]. Hence, requiring intervention to preserve and accelerate its germination process.…”

“…A recent study by Nugraheni and Yuniarti [ 100 ], recommended that the optimum condition to maintain seed viability for at least one month and speed germination of T. orientale is to dry it for 24 hr, and put it in an air-tight aluminium foil container in an air condition room. Similarly, the highest growth uniformity of 74.75 % and 72 % before storage and after storage respectively was obtained by subjecting T. orientale seeds to a hydrated-dehydrated procedure [ 99 ]. Studies by Rodrigues and Rodrigues [ 101 ], indicated the potential of enhancing the seeds of T .…”

Stored diaspores of Astronium urundeuva Fr. (M. Allemão) Engl. (Anacardiaceae) submitted to hydropriming

“…In another research, seeds of Trema orientalis Linn. Blume benefited from a hydration-dehydration process, regardless of whether it were applied before or after storage (Yuniarti et al, 2019).…”