title: Nondwarf rice seedling bioassay for gibberellins.
abstract: The use of nondwarf rice (Oryza sativa L.) cultivars treated with uniconazole as test plants for gibberellin (GA) bioassay instead of Tan-ginbozu dwarf rice variant was investigated. The sensitivity of six nondwarf rice cultivars to GAs was increased substantially by treatment of the seeds with uniconazole. The minimum detectable dose of a GA in the nondwarf cultivars treated with uniconazole was 1- to 1/10-fold of that in the nontreated Tanginbozu and 3- to 10-fold of that in uniconazole-treated Tanginbozu. The relative activity of several GAs on treated nondwarf rice cultivars was not largely different from that to Tan-ginbozu. Considering that seeds of nondwarf rice are available commercially, the nondwarf rice seedling assay would be useful as a simple assay for systematic analysis of GAs, and also as a routine teaching tool in high schools and universities.
authors: National Research Institute of Vegetables, Ornamental Plants and Tea, Ministry of Agriculture, Forestry and Fishery of Japan, Kusawa, Ano-cho, Mie, 514-23 Japan.
authors: T
authors: T
authors: Nishijima
authors: M
authors: M
authors: Koshioka
authors: H
authors: H
authors: Yamaji