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2 不同生育时期Cd胁迫对水稻生长的影响

Table 2 Effects of Cd stress at different rice growth stages on growth of rice plants

处理 Treatment 株高 Plant height (cm) 分蘖数 Tiller number 水稻各部位生物量 Cd contents in rice tissues (g/plant) 糙米 Brown rice 谷壳 Husk 穗 Ear 叶 Leaf 茎 Stem 根 Root 总生物量 Total biomass CK 105.7±4.7a 17±1ab 1.5±0.5a 7.6±2.2ab 1.9±1.0a 14.6±1.2a 23.2±2.6ab 8.0±0.4a 56.8±3.8a CG 106.7±4.7a 15±1b 1.6±0.1a 8.4±2.1ab 2.4±0.2a 17.2±2.4a 15.9±2.5b 7.0±0.5a 52.4±2.8a TS 105.0±4.1a 15±1b 1.1±0.1a 5.5±0.8ab 2.4±0.2a 17.6±4.4a 18.6±4.1ab 7.0±1.3a 52.2±6.7a JS 101.7±2.4a 22±1a 0.9±0.5a 4.1±1.8b 2.9±0.9a 14.8±5.0a 19.8±4.7ab 8.3±2.0a 50.8±14.0a BS 103.3±9.4a 17±1ab 1.4±0.4a 6.2±4.2ab 2.3±0.4a 15.6±1.2a 20.4±4.8ab 6.7±0.7a 52.7±10.9a FS 106.7±2.4a 17±1ab 1.3±0.6a 4.0±1.4b 2.5±0.1a 14.7±1.3a 19.7±2.6ab 6.5±1.3a 48.7±3.0a DS 105.0±4.1a 19±2ab 1.3±0.2a 9.9±2.0ab 3.0±0.3a 14.5±3.5a 18.8±4.9ab 7.6±1.7a 55.1±6.5a MS 105.0±4.1a 18±2ab 1.5±0.0a 11.3±5.6a 2.8±0.5a 16.0±1.5a 26.1±2.7a 7.8±0.3a 65.4±8.1a