Cotyledons ist True Trifollolate Petiole Leaflet Growing point Unifollolate leaf Axillary buds Cotyledons Hypocoty Soil surface Soybean growth and development- Growth and Vegetative Stages EA COTYLEDONS Nodules Lateral roots .Branched tap root C.seed germination and seedling forming STAGE
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 C.se Copyright reseved by Long Mingxiu ed germination and seedling forming
2.Plant Growth and development SEED COAT 形 COTYLEDON UNIFOLIOLIATE LEAF 95 PRIMARY ROOT ∠TRIFOLIOLIATE LEAF (H) (A) (B) FORAGES College of animal science,Northwest Agriculture Forestry University 西北农林科技大学动物科技学院草业科学系
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu 2.Plant Growth and development
Bunch Type Sod,Former Copyright reseved by Long M ulture Forestry University 四北农杯科技天子列物科技子院草业科学系
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu Plant Morphology • Grasses – bunch type • tall fescue, orchardgrass • tillers upward forms clump – sod formers • bermudagrass, Ky Bluegrass • has rhizomes or stolons • forms dense sod • Growth Habit – erect hay – prostrate pasture Sod Former Bunch Type
2.Plant Growth and development 3)发育 A,概念:是指由一个细胞受精卵或体细胞经过一 系列细胞生长和分化,发育成一个包括多种组织和器 官的多细胞生物体的过程。从细胞功能和生物体的形 态来看,它可以被描述成三个重叠和相互依赖的过程: 分化differentiation 区域专一化regional specification 控制分化并导致在特定位置产生特定的细胞类型。 控制分化状态相同细胞的形态形成,也就是导致细胞 的功能和行为产生差异。 形态建成morphogenes is F■RA Copyright reseved by Long College of animal science,Northwest Agriculture Forestry University 西北农林科技大学动物科技学院草业科学系
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu 3)发育 A.概念:是指由一个细胞——受精卵或体细胞经过一 系列细胞生长和分化,发育成一个包括多种组织和器 官的多细胞生物体的过程。从细胞功能和生物体的形 态来看,它可以被描述成三个重叠和相互依赖的过程: 分化differentiation 区域专一化regional specification 控制分化并导致在特定位置产生特定的细胞类型。 控制分化状态相同细胞的形态形成,也就是导致细胞 的功能和行为产生差异。 形态建成morphogenesis 2.Plant Growth and development
Flag leaf Leaf blade primordia A .eaf sheath Node n+4 Node n+3 Axillary bud Node n+2 Node n+1 Node n Internode College of animal scier 西北农考 Node n-1
__________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University 西北农林科技大学动物科技学院草业科学系 Copyright reseved by Long Mingxiu