logging in or signing up Plant embryogenesis aSGuest114501 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 764 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: September 19, 2011 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript P. Moorthi Biochemistry: Plant embryogenesis P. Moorthi BiochemistrySlide 2: Plant cells have rigid cell walls , can't migrate . shape is based on the rate and direction of cell division and cell elongation. Although plants develop three basic tissue systems ( dermal, ground, and vascular ) Plant development is continuous. New plant organs are formed throughout their life by clusters of embryonic cells called meristems .Slide 3: apical cell basal cell Plant Development : Plant Development Growth and differentiation of cells, Tissues, organs, organ systems Flowers Zygote Embryo seedsSlide 5: seed formation and germinationflower: flower NectarImperfect flower Plants: Imperfect flower Plants Melons, Cucumbers Pumpkins holly Perfect flowers: Perfect flowers Contain both male and female parts in the same flower. Peas, beans, and iris are examples of perfect flowers. Flowers attract pollinators with sweet nectar, bright colors, and shapes and structures that accommodate particular pollinators Plants without flowers : Plants without flowers The simplest plants do not flower . Plants such as ferns, mosses , and lichens produce spores instead of seeds. Ferns produce their spores on the undersides of the leaves (fronds) in structures called sporangia . POLLINATION : POLLINATION SELF-POLLINATION: citrus, lettuce, tomato, okra,tobacco , eggplant, cotton, soybean, rice, wheat,peanut , field bean CROSS-POLLINATION: maize, rye, Crotalaria juncea, sorghum , onion, cabbage, carrot, passion flower, castor bean, sunflower, cucurbits, brassicasSlide 11: CROSS-POLLINATION Insect Pollination and Wind Pollination : Insect Pollination and Wind PollinationAge of flower development in some woody plants in the seedling phase. : Age of flower development in some woody plants in the seedling phase. Rose ( Rosa spp.) 20-30 years Beech ( Fagus sylvatica ) 30-40 years Oak ( Quercus robur ) 25-30 years Redwood ( Sequoiadendron giganteum ) 20 yeasr Ivy ( Hedera helix) 5-10 years Scotch pine ( Pinus sylvestris ) 5-10 years Citrus ( Citrus spp.) 5-8 years Apple ( Malus spp.) 3-8 years Grape ( Vitis ) year from Hartmann and Kester’s Plant Propagation: Principles and Practices, 7th edition (2002).FERTILIZATION: FERTILIZATION sperm cell (n) + egg cell (n) ZYGOTE (2n) EMBRYO TRIPLE FUSION: sperm cell (n) + polar nuclei (2n) ENDOSPERM NUCLEUS (3n)Internal structure of a dicot seed and embryo.: I nternal structure of a dicot seed and embryo. seed coat, endosperm, cotyledon, hypocotyl .Steps of Seed Germination : Steps of Seed Germination Seed structure Requirements for seed germination Factors affecting seed germination Steps of seed germinationsSeed dormancy : Seed dormancy Exogenous dormancy, Physical dormancy Mechanical dormancy Chemical dormancy Endogenous dormancy Physiological dormancy Drying Photodormancy Thermodormancy Morphological dormancy Combined dormancy Combinational dormancy You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.