Crossing latitude introduction delayed flowering and facilitated dry matter accumulation of soybean as a forage crop  

作　　者：Dong An Xingfa Lai Tianfu Han Jean Marie Vianney Nsigayehe Guixin Li Yuying Shen 

机构地区：[1]State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems,Lanzhou University,Lanzhou 730020,China [2]National Field Scientific Observation and Research Station of Grassland Agro-ecosystems in Gansu Qingyang,Lanzhou University,Lanzhou 730020,China [3]College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China [4]Key Laboratory of Soybean Biology(Beijing),Ministry of Agriculture and Rural Affairs/Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China

出　　处：《Journal of Integrative Agriculture》2025年第4期1436-1447,共12页农业科学学报(英文版)

基　　金：funded by the National Key R&D Program of China(2022YFD1300803);the China Agriculture Research System of MOF and MARA(CARS-34)。

摘　　要：Grain soybean(Glycine max(L.)Merr.)shows potential as a forage crop following its introduction from low to high latitudes due to in its growth phenotype.However,the application of this approach is impeded by the diverse ecological types of soybean,their adaptability to the introduction,and the uncertainty surrounding the growth phenotype post-introduction.This study introduced 24 grain soybean varieties from low-latitude regions(22-31°N)to the high-latitude northwestern Loess Plateau(39°N)between 2018 and 2019.The growth phenotypes were observed,and their forage productivity potential was assessed.All varieties displayed delayed flowering following cross-latitude introduction,with the vegetative growth phase of some varieties even exceeding their entire growth duration at their origin.Rapid dry matter accumulation rates indicated growth adaptation performance and formed the basis for soybean forage yield.Varieties from the tropical South China region exhibited significant yield advantages,with dry matter yields of 8.97-14.68 t ha^(-1)and crude protein yields of 1.44-2.51 t ha^(-1).Varieties HX3 and GX7 from this region demonstrated optimal growth adaptability and productivity in the cross-latitude environment,achieving the highest dry matter yields of 14.68 and 13.86 t ha^(-1),respectively.As a result,HX3 and GX7 are recommended for local farming systems to provide high-quality forage.The cross-latitude introduction of soybean is proposed as a viable and efficient strategy for forage improvement and application.

关 键 词：forage soybean latitude span vegetative growth INTRODUCTION variety screening 

分 类 号：S565.1[农业科学—作物学]