黑果枸杞（Lycium ruthenicum）是我国西北干旱区药食同源的国家二级保护植物。在新疆南部自然居群中出现扁形和圆球形果实的两种个体，二者在不同海拔居群出现比例上存在差异。为了了解该物种异形果实的种子在不同海拔居群的萌发特性及其对不同气候类型荒漠环境的响应，对其在不同海拔居群的结籽率和种子质量、休眠、萌发特性及干旱胁迫的响应进行了室内控制性实验的比较研究，以期揭示该物种异形果实对新疆南部不同海拔荒漠环境的响应。结果表明：黑果枸杞扁形果实的结籽率高于圆球形果实；异形果实结籽率随着居群海拔的上升而逐渐降低，种子质量则随海拔的上升而逐渐升高。低海拔居群种子的吸水率比高海拔居群高，扁形果实种子的吸水率高于圆球形果实的种子。高温（20~30 ℃）、低浓度（0.1 mmol·L^-1）的赤霉素及全黑暗条件是打破休眠的主要因素。圆球形果实的种子对高浓度30%PEG干旱胁迫的响应能力高于扁形果实的种子；低海拔居群果实的抗旱能力高于高海拔居群。

A national second-class protected food and medicinal plant, Lycium ruthenicum grows in Northwest China’s arid, arid-land climate. At various elevation populations in southern Xinjiang, China, this species produces flat and spherical fruit individuals and noticeably varied heteromorphic fruit individuals. We studied seed sets and their quality, seed germination and dormancy, and drought stress responses of both types of fruits from different elevation populations in laboratory settings, as well as the adaptive strategies of this species in different climate weather populations at southern Xinjiang to better understand how the heteromorphic fruit of this species adapted to its different climate desert habitat. Flat fruits had a larger seed set than globular fruits. Moreover, the seed set was reduced for both types of fruits with the increasing elevation, while seed quality improved for the same as elevation increased. The ability of seeds to absorb water is greater in low-elevation populations than in high-elevation populations, and the ability of seeds in flat fruit to absorb water is greater than that of globular fruit. The major elements that were employed to disrupt L. ruthenicum seed dormancy and increase seed germination were high temperature (20-30 °C), low concentration (0.1 mmol·L^-1 of GA₃), and dark mode circumstances. The drought resistance of globular fruit seeds in low-elevation populations was greater than that of high-elevation populations, and they were 30% more susceptible to drought stress.