Effects of dessication on the morpho-anatomical, physiological and biochemical characteristics of durian (Durio zibethinus Murr), seeds
1999
Magpantay, D.Z.
Durian seeds were highly sensitive to dessication when air and sun-dried and to low temperature when kept at 15 deg C and 5 deg C for 15 to 3 days. There was a strong positive correlation (r=0.97) between moisture content (MC) and germination and a strong negative correlation (r=-0.99) between electrical conductivity and germination. The higher electrical conductivity the lower is the viability of the seeds. A significant increase in the germination rate and peroxidase activity was observed with the corresponding reduction in the seed viability. The presence of large amount of soluble sugars particularly the non-reducing sugar component within the cell failed to prevent the damage or disruption in the integrity of the membrane. The non-reducing sugars decreased significantly with the gradual reduction in the seed viability. Storing durian seeds with high MC in moist sawdust, wrapped in aluminum foil maintained the viability of the seeds for one month period. A higher germination of 90 percent at storage was obtained when seeds were kept in moist sawdust compared with 32.5 percent when wrapped with aluminum foil. Higher survival rate of 85 percent and a final germination of 88 percent, were obtained when seeds were transferred in a soil media
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