Field deterioration and physical charisteristics of seeds of 10 soybean varieties
1996
Wanchai Chanprasert | Suchart Ondum | Rungsarid Kaveeta | Surapon Oupadissakoon (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Agronomy)
Field study was carried out with 10 soybean varieties in the rainy season 1994. The aim was to compare seed deterioration during field storage and to determine the relationships between physical characteristics and quality of soybean seed. An RCB design with 4 replications was used. Seed quality was evaluated by standard germination and 3 methods of vigour test, i.e. accelerated ageing test, electrical conductivity test and field emergence test. The results revealed that seed deterioration during field storage were different among 10 soybean varieties. The seed of KPS292 vegetable soybean deteriorated most rapidly and showed the poorest seed quality at harvest. Seed germination of CM60 and NS1 decreased faster than that of KUSL20004, AGS129, SJ4, SJ1, ST1, SJ2 and SJ5 respectively, during field storage. Some physical characteristics of seed such as seed weight, eccentricity value, percent seed coat and percent embryonic axis were found to correlate with seed quality.
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