) attribute grape seed dormancy to a water-soluble inhibitor, most likely abscisic acid, which can be removed with leaching by running water. The goal of this study was to test various seed treatments in an attempt to improve overall germination rates of
air dryer for 90 min and then stored in hermetic plastic bags at 20 °C until evaluation. Fig. 1. General outline of light seed treatment. Inside the container, lettuce seeds reached an equilibrium water content of 16%. Light was provided by red (660 nm
A compressed air gel seeding system was developed to sow simultaneously several rows with different seed treatments. A technique to plant vegetable seeds at equidistant spacings using a solenoid valve and photoelectric device is described.
an economical and practical seed treatment alternative for enhancing tanglehead seed germination. Because tanglehead is a fire-adapted species ( Goergen and Daehler, 2001 ), it is assumed that smoke applications may improve the germination of dormant
seedlings from treatment groups: green seed (GS) 2 at 10 weeks after pollination (WAP), GS3 at 15 WAP, GS4 at 20 WAP, dry seed (DS) 1 at 20 WAP, and DS2 at 20 WAP after a 10-week stratification period. Seedlings in each seed treatment group represent the
been used to propagate and conserve this species. The aim of this study was to develop in vitro propagation methods for D. ombet to conserve this critically endangered species. Materials and Methods Plant material, seed treatment and in vitro culture
and 7 d) than untreated seeds. GA is a common hormonal priming agent used for seed treatment due to this hormone’s capacity to break seed dormancy, induce germination, and regulate metabolic activities that induce cotyledon development ( Khan, 1968
the cultivar. Chromosome doubling studies Seed treatment with colchicine. Seeds were pretreated by soaking in an aqueous solution of 0.1% (v/v) Triton ® X-100 (Integra Chemical, Renton, WA) for 24 h on a rotary shaker (model G-33; New
Seeds of tomato (Lycopersicon esculentum Mill.) and pepper (Capsicum annuum L.) were either germinated before planting, primed (immersed in an aerated solution of potassium phosphate and ammonium phosphate for 72 hours (tomato) or 120 hours (pepper) and dried), or left untreated (raw) and then planted with gel in loamy sand and sandy soils. There was little difference in response from the tomato seed treatments. In pepper, germinated seeds emerged much earlier and established heavier plants. Differences in emergence due to seed treatments generally were greater in loamy sand than in sandy soil.
The plant growth regulator tetcyclasis applied as a seed treatment [75% wettable powder (WP)] had growth-retarding effects on sweet corn (Zea mays L. ‘Silver Queen’), and modified water use. Tetcyclasis at rates of 0.05, 0.1, and 0.2 g a.i./kg of seed significantly retarded top growth, while having no effect on root length for 28 days after planting. Water use on a per gram of plant tissue basis tended to be lower under cool-season conditions and equal under warm-season conditions among tetcyclasis seed treatments as compared to nontreated controls. Chemical names used: 5- (4-chlorophenyl)-3,4,5,9,10-pentaaza-tetracyclo(5,4,l,02,6,08,11) dodeca-3,9-diene (tetcyclasis).