Quality of wrinkled peanut seed
1994
Wasu Amaritsut
In the study on seed quality of Khonkaen 60-3 Kaset 1 and Tainan 9 peanuts, wrinkled seed percentages, moisture content and seed coat thickness decreased as the seeds approached maturity, Wrinkleness of seed coat was found to have been caused by the curvature of seed coat surface along vascular bundles while the non wrinkled one had smooth seed coat surface. Wrinkled seed of Khonkaen 60-3 peanut was higher in moisture content, first count germination and germination index than the non wrinkled ones. Conductivity test and seedling dry weight of the wrinkled seeds was inferior to the non wrinkled seed, Both types of seed were not different in standard germination and modified accelerated aging test. After 4 months storage, seedling dry weight and modified accelerated aging of the wrinkled seeds were lower than the non wrinkled seeds, but seed moisture content, standard germination and germination index were not different. Therefore the mature wrinkled peanut seed could be used for planting. However seed quality was potentialy decrease faster than the non wrinkled seed. Wrinkled seeds imbibed water faster than the non wrinkled seeds. It was also found that planting depth at 5, 7.5 and 10 centimeters on Pakchong, Taphra and Kamphaeng saen soil series, no differences in field emergence and germination index were found among the wrinkled and non wrinkled seed but seedling dry weight of wrinkled seed was lower than the non wrinkled groups.
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