水稻的侧根发育及其影响因素
刘大同, 荆彦平, 陈晶晶, 余徐润, 王忠*

Rice Lateral Root Development and Its Impact Factors
LIU Da-Tong, JING Yan-Ping, CHEN Jing-Jing, YU Xu-Run, WANG Zhong*
图1 水稻侧根发育的过程 A: 半薄切片; I~VI: 示侧根形态建成, E: 内皮层; P: 中柱鞘; S: 中柱; Ct: 皮层; LRP: 侧根原基; I~IV, bar=20 #cod#x003bc;m; V, VI, bar=50 #cod#x003bc;m。B: 荧光显微观察; I: 侧根露出前的母根表皮, 箭头指示侧根原基; II, III: 母根表皮上出现缝隙, 箭头指示侧根原基和母根表皮间的缝隙; IV: 侧根露出后母根表皮,箭头指示表皮与侧根的巨大间隙, bar=100 #cod#x003bc;m。C: 扫描电镜下侧根和母根表皮; 箭头指示破损外翘的表皮, bar=50 #cod#x003bc;m。D: 扫描电镜下的侧根断面和母根结构; 箭头指示破损的表皮、皮层和破损间隙, bar=50 #cod#x003bc;m。
Fig. 1 Lateral root development of rice A: I-VI: process of lateral root formation shown by semi-thin slices. E: endodermis; P: pericycle; S: stele; Ct: cortex. LRP: lateral root primordia. I-IV, bar=20 #cod#x003bc;m; V, VI, bar=50 #cod#x003bc;m. B: I: epidermis of parent root before lateral root emergence, arrows indicate the primordia. II, III: cracks appeared on the parent root, arrows indicate the primodias and the gap on the epidermis. IV: epidermis of parent root after lateral root emergence, arrows indicate the gap between. bar =100 #cod#x003bc;m. C, D: photographs about lateral roots and epidermis of parent root under SEM, arrows indicate the broken epidermis, cortex and the gaps, bar=50 #cod#x003bc;m.