铵态氮素促进甘薯块根形成的解剖特征及其IbEXP1基因的表达

王翠娟, 柴沙沙, 史春余, 朱红, 谭中鹏, 季杰, 任国博

Anatomy characteristics and IbEXP1 gene expression of tuberization under ammonia nitrogen treatment in sweet potato

WANG Cui-Juan, CHAI Sha-Sha, SHI Chun-Yu, ZHU Hong, TAN Zhong-Peng, JI Jie, REN Guo-Bo

表5 秧苗栽植后14 d幼根根内部结构部分量化指标

Table 5 Quantitative indices of young root internal structure in different treatments on the 14th day after planting

品种 Variety 处理 Treatment 根直径 RD (mm) 中柱直径 SD (mm) 原生木质部束数目 PSN 次生木质部束数目 SXN 木质化薄壁细胞数目 LPCN 中柱占横截面比例 RSCS (%) 商薯19 S19 N0 1.22 a 0.88 b 5.00 b 8.00 c 29.00 d 40.96 b AN60 1.24 a 0.96 a 6.33 a 14.00 a 71.00 c 47.61 a XN60 1.10 b 0.69 c 6.00 a 10.00 b 68.00 c 47.61 a AN180 1.14 b 0.74 c 5.00 b 10.00 b 83.00 b 42.19 b XN180 1.17 b 0.70 c 5.00 b 6.00 c 126.00 a 40.96 b 济徐23 J23 N0 1.42 ab 0.85 a 7.00 a 9.00 b 19.00 d 33.64 a AN60 1.53 a 0.85 a 8.00 a 13.00 a 61.00 c 27.04 a XN60 1.30 b 0.69 b 7.00 a 11.00 ab 59.00 c 28.09 a AN180 1.48 a 0.85 a 6.00 b 11.00 ab 110.00 a 33.64 a XN180 1.21 c 0.54 c 6.33 b 10.00 b 91.00 b 20.25 b