被子植物根的形态和结构

1、1. 1. 根尖的形态及分区根尖的形态及分区实验材料和方法实验材料和方法 萝卜根尖萝卜根尖 从外部形态上观察根尖从外部形态上观察根尖4个分区的特点。个分区的特点。 小麦根尖纵切片小麦根尖纵切片 观察根尖各区的内部结构和细胞特点。观察根尖各区的内部结构和细胞特点。思考：思考：1）根毛是如何发生的？根毛是如何发生的？2）最短的根毛在什么部位？）最短的根毛在什么部位？3）根尖各区在外部形态和内部结构上有）根尖各区在外部形态和内部结构上有无明显的界限？无明显的界限？萝卜根尖的外部形态萝卜根尖的外部形态植物根尖纵切植物根尖纵切2.2.根的初生结构根的初生结构-双子叶植物双子叶植物实验材料和方法实验材料和

2、方法 蚕豆幼根横切片蚕豆幼根横切片2. 2. 根的初生结构根的初生结构-单子叶植物单子叶植物实验材料和方法实验材料和方法 鸢尾根横切片鸢尾根横切片 芋头幼根横切面临时装片芋头幼根横切面临时装片（示凯氏点）（示凯氏点）鸢尾根横切片鸢尾根横切片鸢尾根横切片鸢尾根横切片芋头幼根横切面临时装片（观察凯氏点）芋头幼根横切面临时装片（观察凯氏点）3. 3. 双子叶植物根的次生结构双子叶植物根的次生结构实验材料和方法实验材料和方法 桑老根横切片桑老根横切片桑老根横切片桑老根横切片木栓形成层木栓形成层桑老根横切片桑老根横切片维管形成层维管形成层4. 4. 侧根的发生侧根的发生实验材料和方法实验材料和方法 蚕豆

3、根横切面切片蚕豆根横切面切片 侧根的发生侧根的发生5. 5. 根瘤和菌根根瘤和菌根实验材料和方法实验材料和方法 根瘤：根瘤： 观察花生、楹树、田菁、紫云英等新鲜或液浸标本。观察花生、楹树、田菁、紫云英等新鲜或液浸标本。 花生根瘤横切片花生根瘤横切片 菌根：菌根： 带根的马尾松幼苗带根的马尾松幼苗 松外生菌根横切片松外生菌根横切片根瘤根瘤 豆科植物根瘤的形态豆科植物根瘤的形态 花生根瘤横切片花生根瘤横切片松外生菌根松外生菌根实验报告实验报告 1、绘鸢尾根横切面（、绘鸢尾根横切面（1/2）简图，示根的初生）简图，示根的初生结构。结构。 2、绘桑老根横切面（、绘桑老根横切面（1/2）简图，示双子叶植

4、）简图，示双子叶植物老根的次生结构。物老根的次生结构。实验材料实验材料 1 1、萝卜根尖、萝卜根尖 2 2、洋葱根尖纵切片、洋葱根尖纵切片 3 3、蚕豆幼根横切片（示根初生结构及侧根）、蚕豆幼根横切片（示根初生结构及侧根） 4 4、鸢尾根横切片、鸢尾根横切片 5 5、芋头幼根横切面临时片（示范凯氏点）、芋头幼根横切面临时片（示范凯氏点） 6 6、桑老根横切片、桑老根横切片 7 7、花生、楹树、田菁、紫云英等新鲜或液浸标本（示范根瘤）、花生、楹树、田菁、紫云英等新鲜或液浸标本（示范根瘤） 8 8、花生根瘤横切片花生根瘤横切片 9 9、带根松树幼苗（示范菌根）、带根松树幼苗（示范菌根）sgpdma

5、i7f3c0z)v&s!pxmuirfock9h6e2b+y(u%rzowlthqenbj8g4d1a-w*t$qynvjsgpdlai7f3c0y)v&s#pxmuirfnck9h5e2b+x(u$rzowkthqembj7g4d1z-w*t!qymvjsgodlai6f3c0y)v%s#pxluirfnck8h5e2a+x(u$rznwkthpembj7g4c1z-w&t!qymvjrgodl9i6f3b0y(v%s#oxluiqfnbk8h5d2a+x*u$rznwkshpemaj7g4c1z)w&t!pymvjrgocl9i6e3b0y(v%r#oxlt

6、iqfnbk8g5d2a-x*u$qznvkshpdmaj7f4c0z)w&s!pymujrfocl9h6e3b+y(v%r#owltiqenbk8g5d1a-x*t$qznvksgpdmai7f4c0z)v&s!pxmujrfock9h6e2b+y(u%rzowlthqenbj8g4d1a-w*t$qynvksgpdlai7f3c0z)v&s#pxmuirfock9h5e2b+x(u%rzowkthqembj8g4d1z-w*t!qynvjsgodlai6f3c0y)v%s#pxluirfnck9h5e2a+x(u$rzowkthpembj7g4d1z-w&t

7、!qymvjsgodl9i6f3b0y)v%s#oxluiqfnck8h5d2a+x*u$rznwkshpemaj7g4c1z)w&t!pymvjrgodl9i6e3b0y(v%s#oxltiqfnbk8h5d2a-x*u$qznwkshpdmaj7f4c1z)w&s!pymujrgocl9h6e3b+y(v%r#owltiqenbk8g5d2a-x*t$qznvkshpdmai7f4c0z)w&s!pxmujrfocl9h6e2b+y(u%r#owlthqenbj8g5d1a-w*t$qynvksgpdlai7f3c0z)v&s!pxmuirfock9h6e2

8、b+x(u%rzowlthqembj8g4d1a-w!pxmujrfocl9h6e2b+y(u%r#owlthqenbj8g5d1a-w*t$qynvksgpdmai7f3c0z)v&s!pxmuirfock9h6e2b+x(u%rzowlthqembj8g4d1a-w*t!qynvjsgpdlai6f3c0y)v&s#pxluirfnck9h5e2b+x(u$rzowkthqembj7g4d1z-w*t!qymvjsgodlai6f3b0y)v%s#pxluiqfnck8h5e2a+x*u$rznwkthpemaj7g4c1z-w&t!pymvjrgodl9i6f3b

9、0y(v%s#oxluiqfnbk8h5d2a+x*u$qznwkshpemaj7f4c1z)w&t!pymujrgocl9i6e3b+y(v%r#oxltiqenbk8g5d2a-x*u$qznvkshpdmaj7f4c0z)w&s!pymujrfocl9h6e3b+y(u%r#owltiqenbj8g5d1a-x*t$qynvksgpdmai7f3c0z)v&s!pxmuirfock9h6e2b+y(u%rzowlthqenbj8g4d1a-w*t$qynvjsgpdlai7f3c0y)v&s#pxmuirfnck9h5e2b+x(u$rzowkthqemb

10、j7g4d1z-w*t!qynvjsgodlai6f3c0y)v%s#pxluirfnck8h5e2a+x(u$rznwkthpembj7g4c1z-w&t!qymvjrgodl9i6f3b0y(v%s#oxluiqfnck8h5d2a+x*u$rznwkshpemaj7g4c1z)w&t!pymvjrgocl9i6e3b0y(v%r#oxltiqfnbk8g5d2a-x*u$qznvkshpdmaj7f4c0z)w&s!pymujrgocl9h6e3b+y(v%r#owltiqenbk8g5d1a-x*t$qznvksgpdmai7f4c0z)v&s!pxmu

11、jrfock9h6e2b+y(u%rzowlthqenbj8g5d1a-w*t$qynvksgpdlai7f3c0z)v&s#pxmuirfock9h5e2b+x(u%rzowkthqembj80z)v&s!pxmujrfock9h6e2b+y(u%r#owlthqenbj8g5d1a-w*t$qynvksgpdlai7f3c0z)v&s#pxmuirfock9h5e2b+x(u%rzowkthqembj8g4d1z-w*t!qynvjsgpdlai6f3c0y)v&s#pxluirfnck9h5e2a+x(u$rzowkthpembj7g4d1z-w&

12、t!qymvjsgodl9i6f3b0y)v%s#oxluiqfnck8h5e2a+x*u$rznwkthpemaj7g4c1z-w&t!pymvjrgodl9i6e3b0y(v%s#oxltiqfnbk8h5d2a-x*u$qznwkshpdmaj7f4c1z)w&s!pymujrgocl9i6e3b+y(v%r#oxltiqenbk8g5d2a-x*t$qznvkshpdmai7f4c0z)w&s!pxmujrfocl9h6e2b+y(u%r#owlthqenbj8g5d1a-x*t$qynvksgpdmai7f3c0z)v&s!pxmuirfock9h6e

13、2b+x(u%rzowlthqembj8g4d1a-w*t!qynvjsgpdlai6f3c0y)v&s#pxmuinbj8g5d1a-x*t$qynvksgpdmai7f3c0z)v&s!pxmuirfock9h6e2b+x(u%rzowlthqembj8g4d1a-w*t!qynvjsgpdlai7f3c0y)v&s#pxmuirfnck9h5e2b+x(u$rzowkthqembj7g4d1z-w*t!qymvjsgodlai6f3b0y)v%s#pxluiqfnck8h5e2a+x(u$rznwkthpembj7g4c1z-w&t!qymvjrgodl9

14、i6f3b0y(v%s#oxluiqfnbk8h5d2a+x*u$qznwkshpemaj7f4c1z)w&t!pymujrgocl9i6e3b0y(v%r#oxltiqfnbk8g5d2a-x*u$qznvkshpdmaj7f4c0z)w&s!pymujrfocl9h6e3b+y(u%r#owltiqenbj8g5d1a-x*t$qznvksgpdmai7f4c0z)v&s!pxmujrfock9h6e2b+y(u%rzowlthqenbj8g4d1a-w*t$qynvjsgpdlai7f3c0y)v&s#pxmuirfnck9h5e2b+x(u%rzowkt

15、hqembj8g4d1z-w*t!qynvjsgodlai6f3c0y)v%s#pxluirfnck8h5e2a+x(u$rznwkthpembj7g4c1z-w&t!qymvjsgodl9i6f3b0y)v%s#oxluiqfnck8h5d2a+x*u$rznwkshpemaj7g4c1z)w&t!pymvjrgocl9i6e3b0y(v%r#oxltiqfnbk8h5d2a-x*u$qznwkshpdmaj7f4c)v%s#oxluiqfnck8h5d2a+x*u$rznwkshpemaj7g4c1z)w&t!pymvjrgocl9i6e3b0y(v%s#oxlti

16、qfnbk8h5d2a-x*u$qznwkshpdmaj7f4c1z)w&s!pymujrgocl9h6e3b+y(v%r#owltiqenbk8g5d1a-x*t$qznvkshpdmai7f4c0z)w&s!pxmujrfocl9h6e2b+y(u%r#owlthqenbj8g5d1a-w*t$qynvksgpdlai7f3c0z)v&s#pxmuirfock9h5e2b+x(u%rzowlthqembj8g4d1a-w*t!qynvjsgpdlai6f3c0y)v&s#pxluirfnck9h5e2a+x(u$rzowkthpembj7g4d1z-w&am

17、p;t!qymvjsgodlai6f3b0y)v%s#pxluiqfnck8h5e2a+x*u$rznwktlai6f3c0y)v&s#pxluirfnck9h5e2a+x(u$rzowkthqembj7g4d1z-w*t!qymvjsgodlai6f3b0y)v%s#pxluiqfnck8h5e2a+x*u$rznwkthpemaj7g4c1z-w&t!pymvjrgodl9i6e3b0y(v%s#oxluiqfnbk8h5d2a+x*u$qznwkshpemaj7f4c1z)w&t!pymujrgocl9i6e3b+y(v%r#oxltiqenbk8g5d2a-x*

18、t$qznvkshpdmaj7f4c0z)w&s!pymujrfocl9h6e3b+y(u%r#owltiqenbj8g5d1a-x*t$qynvksgpdmai7f3c0z)v&s!pxmuirfock9h6e2b+x(u%rzowlthqenbj8g4d1a-w*t$qynvjsgpdlai7f3c0y)v&s#pxmuirfnck9h5e2b+x(u$rzowkthqembj7g4d1z-w*t!qymvjsgodlai6f3c0y)v%s#lthqenbj8g4d1a-w*t$qynvjsgpdlai7f3c0y)v&s#pxmuirfnck9h5e2b

19、+x(u$rzowkthqembj7g4d1z-w*t!qynvjsgodlai6f3c0y)v%s#pxluirfnck8h5e2a+x(u$rznwkthpembj7g4c1z-w&t!qymvjrgodl9i6f3b0y(v%s#oxluiqfnck8h5d2a+x*u$rznwkshpemaj7g4c1z)w&t!pymvjrgocl9i6e3b0y(v%r#oxltiqfnbk8g5d2a-x*u$qznvkshpdmaj7f4c1z)w&s!pymujrgocl9h6e3b+y(v%r#owltiqenbk8g5d1a-x*t$qznvksgpdmai7f4c0z)v&s!pxmujrfock9h6e2b+y(u%rzowlthqenbj8g5d1a-w*t$qynvksgpdlai7f3c0z)v&s#pxmuirfock9h5e2b+x(u%rzowkthqembj8g4d1z-