State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China.
Liaoning Rice Research Institute, Shenyang 110101, China.
Plant Commun. 2023 Jan 9;4(1):100433. doi: 10.1016/j.xplc.2022.100433. Epub 2022 Sep 7.
To expand crop planting areas, reestablishment of crop latitude adaptation based on genetic variation in photoperiodic genes can be performed, but it is quite time consuming. By contrast, a crop variety that already exhibits multi-latitude adaptation has the potential to increase its planting areas to be more widely and quickly available. However, the importance and potential of multi-latitude adaptation of crop varieties have not been systematically described. Here, combining daylength-sensing data with the cropping system of elite rice and maize varieties, we found that varieties with gradual daylength sensing coupled with optimum cropping modes have an enhanced capacity for multi-latitude adaptation in China. Furthermore, this multi-latitude adaptation expanded their planting areas and indirectly improved China's nationwide rice and maize unit yield. Thus, coupling the daylength-sensing process with optimum cropping modes to enhance latitude adaptability of excellent varieties represents an exciting approach for deploying crop varieties with the potential to expand their planting areas and quickly improve nationwide crop unit yield in developing countries.
为了扩大作物种植面积，可以通过光周期基因的遗传变异来重新建立作物的纬度适应性，但这需要相当长的时间。相比之下，已经具有多纬度适应性的作物品种有可能增加其种植面积，使其更广泛、更快速地得到应用。然而，作物品种的多纬度适应性的重要性和潜力尚未得到系统描述。在这里，我们结合日长感应数据和优质水稻和玉米品种的种植制度，发现具有渐变日长感应能力和最佳种植模式的品种在中国具有更强的多纬度适应能力。此外，这种多纬度适应性扩大了它们的种植面积，并间接地提高了中国全国水稻和玉米的单位产量。因此，将日长感应过程与最佳种植模式相结合，提高优良品种的纬度适应性，为在发展中国家部署具有扩大种植面积和快速提高全国作物单位产量潜力的作物品种提供了一种令人兴奋的方法。
