Cd胁迫水培试验下水稻糙米Cd累积的关键生育时期

王倩倩,贾润语,李虹呈,周航,杨文弢,辜娇峰,彭佩钦,廖柏寒

Key Growth Stage of Cd Accumulation in Brown Rice Through a Hydroponic Experiment with Cd Stress

WANG QianQian,JIA RunYu,LI HongCheng,ZHOU Hang,YANG WenTao,GU JiaoFeng,PENG PeiQin,LIAO BoHan

表4 不同生育时期Cd胁迫对水稻成熟期各部位（根、茎、叶、穗、谷壳和糙米）Cd累积量的影响

Table 4 Effects of Cd stress at different rice growth stages on Cd accumulation amounts in root, stem, leaf, ear, husk and brown rice at maturing stage (μg/plant)

处理 Treatment 糙米 Brown rice 谷壳 Husk 穗 Ear 叶 Leaf 茎 Stem 根 Root 植株 Rice plant CK 0.11±0.02d 0.66±0.11b 0.10±0.05c 0.24±0.01b 1.64±0.60b 12.71±1.44c 15.45±2.12c CG 1.56±0.24a 8.85±3.48a 1.76±0.33a 17.16±3.81a 43.02±20.56a 155.87±34.41a 228.21±55.88a TS 0.18±0.03cd 1.72±0.29b 0.63±0.12bc 2.25±0.81b 4.20±0.71b 38.10±4.23c 47.08±3.38c JS 0.24±0.03cd 1.92±1.20b 0.66±0.33bc 1.02±0.36b 8.25±1.83b 40.37±5.27c 52.47±6.81c BS 0.75±0.28c 4.06±2.16b 1.14±0.23ab 1.69±0.65b 13.42±2.20b 86.09±2.36b 107.13±3.11b FS 1.39±0.69ab 3.74±1.08b 0.90±0.43bc 0.98±0.30b 12.11±6.58b 79.23±5.21b 98.35±6.22b DS 0.49±0.19cd 2.57±0.48b 1.06±0.36ab 1.17±0.53b 4.61±1.76b 32.77±1.23c 42.68±2.10c MS 0.84±0.04bc 3.33±2.26b 0.32±0.17bc 1.22±0.40b 4.97±3.65b 31.55±15.30c 42.24±18.08c