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
Homalomena lindenii (Rodigas) Ridley treated with a single foliar spray of gibberellic acid (GA3) at 100, 200, or 400 mg·liter–1 flowered within an average of 137 days after treatment whereas untreated plants did not flower. In a second experiment, plants treated with GA3 at 25, 50, 75, or 100 mg·liter–1 did not. Blooms displayed no structural abnormalities.
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
Autotetraploid (4n) plants of Dieffenbachia maculata (Lodd.) G. Don ‘Perfection’ flowered poorly, compared to diploids (2n), following treatment with 250 or 500 mg foliar spray of gibberellic acid (GA3)/liter. GA3-treated 4n plants produced bracts that normally precede flowering but remained vegetative and produced additional distal shoots instead of flowers.
Abstract
Dieffenbachia maculata (Lodd.) G. Don ‘Perfection’ inflorescences pollinated at high (100%) relative humidity (RH) revealed excellent in vivo pollen germination and produced seed. Those pollinated at low (40-50%) RH showed almost no pollen germination and did not set seed. Anthers dehisced pollen better at high RH than at low.
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).