Studies on the Screening Technique for Pre-germination Flooding Tolerance in Soybean.

The Role of Seed Structure and Oxygen Responsiveness in Pre-Germination Flooding Tolerance of Soybean Cultivars

“…Fausey and McDonald (1983) found that inbred corn cultivars were more tolerant to pre-germination fl ooding than hybrid cultivars. In soybean, Hou and Thseng (1992) attempted to develop a method for selecting varieties tolerant to pre-germination fl ooding, and found that continuous fl ooding of seeds for four days at 25ºC allowed tolerant genotypes to be identifi ed. Both additive and dominant genes were found to be controlling the tolerance, and the selection for tolerant genotypes was considered to be feasible (Hou et al, 1995).…”

“…A 72-h period of fl ooding is suffi cient to produce between-cultivar differences, regardless of temperature (Hou and Thseng, 1992;Wuebker et al, 2001).…”

Establishment of evaluation procedure for soybean seed-flooding tolerance and its application to screening for tolerant germplasm sources

“…Several studies focusing at developing the methods for evaluating soybean seed-flooding tolerance and analyzing inter-varietal differences have been previously conducted Thseng, 1991 and1992;Hou et.al., 1995). Fifty seeds were dipped in the distilled deionized water in the test tubes (Hou and Thseng, 1991).…”

“…Fifty seeds were dipped in the distilled deionized water in the test tubes (Hou and Thseng, 1991). While petri dish with two moist filter papers was adopted as the germination medium (Hou and Thseng, 1992). In study focusing the germplasm screening, 0.7% agar medium (500 ml) in a plastic tray with a clear cover (20 cm x 25 cm) under continuous light (25000 lx) at 25ºC was used by Sayama et al, (2009)…”

Relation of Seed Structures to Soybean Cultivar Difference in Pre-germination Flooding Tolerance

“…Screening cultivars or germplasms for tolerance to pregermination fl ooding is another option for addressing this problem. Hou and Thseng (1992) attempted to develop a method for selecting varieties tolerant to pre-germination fl ooding, and found that continuous flooding of seeds for four days at 25ºC allowed identifi cation of tolerant genotypes. Both additive and dominant genes were found to control tolerance to pre-germination flooding, and selection for tolerant genotypes was considered feasible (Hou et al, 1995).…”