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大豆是世界上重要的经济粮食作物,起源于我国黄淮海地区,是典型的短日照作物。通常,当高纬度地区大豆品种引种到低纬度区域时,由于其对光周期极其敏感,成熟期大大提前,导致大豆植株生物量和产量降低,这极大程度限制了低纬度地区的大豆种植。大豆长童期(Long Juvenile,LJ)性状在上世纪70年代被发现,并成功应用于低纬度地区大豆育种。LJ性状的导入,突破了大豆在低纬度地区产量极低的限制,使大
Soybean is an important economic food crop in the world. It originated from Huang-Huai-Hai region in China and is a typical short-day crop. Generally, when high-altitude soybean varieties are introduced into low-latitude regions, their maturity is much earlier due to their extreme sensitivity to photoperiod, resulting in lower biomass and yield of soybean plants, which greatly limits soybean planting in low latitudes. Long Juvenile (LJ) traits were discovered in the 1970s and successfully applied to soybean breeding in low latitudes. The introduction of LJ traits broke through the extremely low yield limit of soybeans in low-latitude areas and made them big