Search Results
Abstract
Previous reports have shown that Aglaonema can be induced to bloom with gibberellic-acid treatment (2), and seed set can be increased by maintaining flowers at 100% RH for 24 hr following pollination (1). Both techniques have greatly aided the production of Aglaonema hybrids. Occasionally, however, desirable crosses cannot be made due to unavailability of sufficient pollen or receptive pistillate flowers. In such cases, it would be helpful if pistillate flowers could be pollinated 1 or 2 days after anthesis, because Aglaonema pollen cannot be stored more than 1 day.
Abstract
Abstract. Aglaonema crispum (Pitcher & manda) Nicols., A. pictum (Roxb.) Kunth and A. commutatum Schott ‘Treubii’ inflorescences pollinated at high (100%) relative humidity (RH) showed excellent in vivo pollen germination. Inflorescences pollinated at low (40% to 50%) RH revealed significantly less germination than those pollinated at high RH. Pollen exposed to low RH for 4 hr before pollination did not germinate.
Abstract
Aphelandra sinclairiana Nees. and A. aurantiaca (Scheidw.) Lindl. ‘Roezlii’ were self-compatible, while Aphelandra squamosa Nees. ‘Dania’ was pseudo-self-compatible and occasionally yielded seed after self pollination. Attempts at producing interspecific hybrids were unsuccessful; most pollen tubes failed to traverse more than 10% of the style. Bud pollination and pollination of amputated styles were unsuccessful.
Abstract
Spathiphyllum‘ Mauna Loa’ seedlings flowered after a single spray of gibberellic acid (GA3) at 250, 500 or 1000 mg/liter. Significantly more inflorescences per plant were produced at the 1000 mg/liter treatment. Severe flower distortion, consisting of either curved peduncles or spathes with extra appendages, was observed on 15% of all GA3-treated plants.
Abstract
Aglaonema commutatum Schott ‘Treubii’ sprayed once with 100, 200, or 400 mg/liter gibberellic acid (GA3) in December flowered about 143 days after treatment. Significantly more flowers were produced at the 400-mg/liter treatment than at 100 or 200 mg/liter.
Abstract
Foliar sprays of BA were successfully used to increase basal shoot production on a nonbranching Dieffenbachia hybrid. Three foliar sprays at 250 mg·liter−1 stimulated significantly more shoot development than one or two sprays. Treatment at 500 or 750 mg·liter−1 BA yielded more shoots than 250 mg·liter−1. New shoots were visible four weeks after treatment and developed normally. Chemical names used: N- (phenyhnethyl)-1H-purin-6-amine (BA).
Abstract
Dieffenbachia maculata (Lodd.) G. Don ‘Perfection’ sprayed with GA3 in September flowered within 105 days or less. Inflorescence number per plant was greater at 500 and 1000 mg/liter than at the 250 mg/liter treatment.
Abstract
Pollen of Dieffenbachia maculata (Lodd.) G. Don ‘Perfection’ remained viable for 5 days when stored at 5°C and 90% relative humidity. Pollen germination declined rapidly when stored for more than 1 day at 5 or 25° without controlled humidity. Freezing of pollen was an unsuccessful storage method.
Abstract
Germination of Maranta leuconeura E. Morr. embryos was 65% in Linsmaier and Skoog culture medium and increased to 100% with the addition of N6-[Δ2-isopentenyl] - adenine (2iP).
Abstract
Four Dieffenbachia species produced a low percentage of pollen grains with mean diameters 3244% larger than normal-sized grains.