The remiiarkable inicrease in longitudinal growth of plants by applied gibberellins is well known. Information on accomlpanyvinig metabolic changes is ucl mllore limited ancd ofteln conicerned with relatively late stages of the growth response so that its hearing on the prinlarv chaniges cauised by the gibherellin is tuncertaini. The present paper deals vith clhaniges in protein anid soluible n...

The fungus Cercospora rosicola produces abscisic acid (ABA) as a secondary metabolite. We developed a convenient system using this fungus to determine the effects of compounds on the biosynthesis of ABA. Inasmuch as ABA and the gibberellins (GAs) both arise via the isoprenoid pathway, it was of interest to determine if inhibitors of GA biosynthesis affect ABA biosynthesis. All five putative inh...

Abstract Flowers are key organs in many ornamental plants, and various phases of flower development impact their economic value. The final stage petal is associated with senescence, which an irreversible process involving programmed cell death, premature senescence cut flowers often results major losses quality during postharvest handling. Flower opening two sequential processes. As open, the s...

Abstract. Mubarok S, Wicaksono FY, Nuraini A, Rahmat BPN, Budiarto R. 2022.S hort Communication: Agronomical characteristics of sweet corn under different plant growth regulators during the dry season. Biodiversitas 23: 3091-3098. Sweet (Zea mays convar. saccharata var. rugosa)is one important horticultural crops. Increasing production season can be achieved by applying (PGR). PGRs such as auxi...

Terminal buds of dark-grown pea (Pisum sativum) seedlings have an indole-3-acetic acid oxidase which does not require Mn(2+) and 2,4-dichlorophenol as cofactors. Oxidase activity is at least 50 times higher in buds of tall peas than in dwarf seedlings. Administration of gibberellic acid to dwarf peas stimulates both growth and indoleacetic acid oxidase activity to the same levels as in tall see...

The production and characterization of two high affinity rat monoclonal antibodies to 13-deoxy-gibberellins is described. Hybrid myelomas were derived from rats immunized with an immunogenic keyhole limpet hemocyanin-gibberellin conjugate, linked at carbon-3 to gibberellin A(4) via a hemisuccinate bridge. The selected monoclonal antibodies were characterized by a competitive radioimmunoassay.

Here, efficient plantlet regeneration via somatic embryogenesis from Panax quinquefolium hairy roots was reported. Callus development was optimal on MS medium containing 2,4-dichlorophenoxyacetic acid (1 mg l) and -naphthalene acetic acid (1 mg l). After a 4-week growth, calli were transferred onto MS medium with different combinations of plant growth regulators (PGRs). The highest embryogenesi...

Gerbera is one of the most popular cut flowers in the world. Several experiments have been done on the effect of different chemical compounds on longevity and quality of cut flowers. In the present study, two experiments based on a completely random design with two treatments and three replications were conducted on gerbera cut flower cv. Sorbet. The first experiment examined the effect of BA, ...