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report the genotype used in their protocol. Further research will be necessary to design protocols for in vitro seed germination and embryo rescue in lilac. Callus obtained from cotyledons could provide source material for somatic embryogenesis in future
soilless potting mix (milled sphagnum and course sand, 1:1), and then moist-stratified for three months in the dark at 4 °C. After stratification, flats were placed in a 21 °C greenhouse for seed germination. Seedlings were transplanted to containers and
observed in Debaryomyces hansenii ( Sánchez et al., 2008 ). Low seed germination rate under drought and NaCl treatments was accompanied with reduced activity of glyoxylate cycle in Pinus pinea ( Sidari et al., 2008 ). Two enzymes in the glyoxylate shunt
-epibrassinolide or salicylic acid improves seed germination, seedling growth, and anti-oxidant capacity in Phaseolus vulgaris L. grown under NaCl stress J. Hort. Sci. Biotech. 89 338 344 Semida, W.M. Rady, M.M. 2014b Presoaking application of propolis and maize
growth and development processes of plant. It was reported that exogenous NO could promote seed germination, improve the activity of photosynthesis, and regulate maturation and senescence of plant ( Beligni and Lamattina, 2000 ; Chen et al., 2013 ; Ya
diverse physiological processes of plants, including seed germination, cell elongation, stomata movement, phloem loading and unloading, reproductive growth, and stress responses ( Eisenbarth and Weig, 2005 ; Forrest and Bhave, 2007 ; Gao et al., 2010
Abstract
For prompt germination the seed of Russian olive (Elaeagnus angustifolia L.) required 9 to 12 weeks of after-ripening at a temperature of 5° C. When fruit and endocarp were removed, 50–60% of the non-after-ripened seed germinated. Complete germination was obtained by removing the endocarp and the seed coats. The germination inhibition appeared to be related to non-leachable inhibitors in both of these structures, and their influence was almost entirely restricted to the radicle end of the embryo. Kinetin was very effective in breaking the dormancy linked to the seed coats but did not influence dormancy when the endocarp was present.
Abstract
Five blueberry interspecific hybrids (3 tetraploids, 1 pentaploid, and 1 hexaploid) and 2 highbush (Vaccinium corymbosum L., 2n = 4x = 48) blueberry clones were crossed in all combinations. Seeds per pollination and seed germination were the criteria used to measure the success of these crosses. The tetraploid interspecific hybrids were fully cross-fertile with the highbush clones and with each other. The pentaploid and hexaploid interspecific hybrids were only partially cross-fertile with the highbush clones and with the tetraploid interspecific hybrids; nonetheless, they still produced an adequate amount of viable seed in most combinations. Significant reciprocal differences in crossability were detected for 4 of the 5 species hybrids.
Abstract
Fungal and fire treatments were applied to seeds of Albizia julibrissin to simulate natural mechanisms of seed coat scarification. Seeds in unsterilized soil which contained natural microorganisms resulted in increased germination compared to seeds in sterilized media. Germination in cultures of Rhizoctonia, Fusarium, and Pythium indicated Rhizoctonia was most effective as a seed scarifier. Fire treatment at 1, 3, 5, and 10 seconds indicate that 1 second enhanced seed germination. Scanning electron micrographs of treated seed indicated that fungal hyphae alters the surface of the macrosclereid cells which may allow for imbibition of water. Seeds sub-jected to fire had large cracks in the macrosclereid layer.
Abstract
Flowering dates of freesias (Freesia hybrida Bailey) sown at monthly intervals varied according to monthly temperature fluctuations over a 2-year period. Seeds germinated from April to June reached anthesis from December to March. April through June seeding dates were acceptable for obtaining optimal flower production and quality in Minnesota, but these plants were slower to flower than those seeded from July through November. Night interruptions by incandescent light hastened flowering, but flower quality was poorer than from plants grown under natural days. Short days and night interruptions using BCJ-Ruby incandescent lamps had no influence on flowering date.