Jiang L, Salisbury F B, Campbell W F, Carman J G, Nan R
Dept. Plants, Soils, and Biometeorology, Utah State University, Logan 84322-4820, USA.
J Plant Physiol. 1998;152:323-7. doi: 10.1016/s0176-1617(98)80146-6.
Super-Dwarf wheat plants were grown in growth chambers under 12 treatments with three photoperiods (18 h, 21 h, 24 h) and four carbon dioxide (CO2) levels (360, 1,200, 3,000 and 7,000 micromoles mol-1). Carbon dioxide concentrations affected flower initiation rates of Super-Dwarf wheat. The optimum CO2 level for flower initiation and development was 1,200 micromoles mol-1. Super-optimum CO2 levels delayed flower initiation, but did not decrease final flower bud number per head. Longer photoperiods not only accelerated flower initiation rates, but also decreased deleterious effects of super-optimum CO2. Flower bud size and head length at the same developmental stage were larger under longer photoperiods, but final flower bud number was not affected by photoperiod.
超级矮秆小麦植株在生长室中进行了12种处理，设置了三个光周期（18小时、21小时、24小时）和四个二氧化碳（CO₂）水平（360、1200、3000和7000微摩尔 摩尔⁻¹）。二氧化碳浓度影响超级矮秆小麦的开花起始速率。开花起始和发育的最佳CO₂水平为1200微摩尔 摩尔⁻¹。超最佳CO₂水平延迟了开花起始，但并未减少每穗最终的花芽数量。较长的光周期不仅加快了开花起始速率，还降低了超最佳CO₂的有害影响。在较长光周期下，相同发育阶段的花芽大小和穗长更大，但最终花芽数量不受光周期影响。
