Changes of Pericarp Gibberellin Contents in Three Varieties of Kidney Bean

[摘要] Changes of pericarp gibberellins in both acidic ethylacetate and n-butanol fractions during development in three varieties of kidney bean, two dwarfs and a tall, were examined. In early stage of pod growth, the gibberellin contents in the pericarps increased in all three varieties. After the full growth in the length of pericarps, gibberellin content decreased rapidly in Masterpiece, a dwarf one, whereas in other two varieties the gibberellin concentrations of full ripened pericarps were slightly lower (Mantle, a dwarf) or almost the same (Kentucky VVonder, a tall) in both fractions as compared with those of the pericarps in earlier developing stages. Those results indicate that the change of gibberellin production along with their pericarp development are greatly dependent on varieties. Addition to this, very high gibberellin content such like as 4.2 μg GA3 equivalent per 1 g dry weight, for example, is detected in the pericarps of Masterpiece just after the stage for vegetable use. Available informations are indicating that gibberellin activity is generally higher in tall varieties than in dwarf ones, however, the results obtained in this experiment indicate that the pericarps of tall variety Kentucky Wonder showed rather small activity than that of dwarfs suggesting that gibberellin concentration in pericarps are not always parallel to those in seeds.

[学科分类] 农业科学（综合）