谷子是我国北方的重要粮食作物之一。谷子是 C_4作物,还是 C_3作物,还是 C_3、C_4都有呢?我们于1980年开始从形态解剖和光合效应等方面,对谷子全生育期光合作用碳代谢途径进行了研究,以期阐明谷子的光合途径,为谷子育种、栽培和种植区划提供理论依据。材料和方法以高粱为典型的 C_4作物,小麦为典型的 C_3作物,进行比较鉴定。1980年,谷子春播品种为晋谷8号、晋谷10号和79—421;夏播品种为竹叶青。高粱为晋杂5号,小麦为7481。1981年,谷子春播品种为晋谷8号;夏播品种为竹叶青。 Millet is one of the important food crops in northern China. Whether the millet is a C_4 crop, a C_3 crop, or a C_3 or C_4 crop? We started from 1980 in terms of morphological anatomy and photosynthesis, and studied the photosynthetic carbon metabolism during the whole growth period of millet to clarify photosynthesis Ways to provide theoretical basis for millet breeding, cultivation and planting division. Materials and Methods Sorghum as a typical C_4 crops, wheat as a typical C_3 crops, for comparative identification. In 1980, millet spring sowing varieties Jin Gu 8, Jin Gu 10 and 79-421; summer sowing varieties of bamboo leaves green. Sorghum Jin hybrid No. 5, wheat is 7481. 1981, millet spring sown varieties for the Jin Gu 8; summer sowing varieties of bamboo leaves green.