全生育期盐碱胁迫对花生种子休眠性和品质性状的影响OA

Soil salinization is a significant type of abiotic stress impacting peanut growth.Therefore,it is crucial to identify superior cultivars exhibiting high-quality and strong dormancy for expanding peanut cultivation area.In this study,a total of 24 high-yield peanut cultivars were evaluated separately in a saline-alkali plot located in the Yellow River Delta experimental field and a normal plot located in the south of Xiaoqing River,Guangrao.Seven morphological quality traits,four nutritional quality traits,and seed dormancy were measured,followed by significance testing and statistical analysis.The results showed that:① Saline-al-kali stress increased the proportion of seeds with light-yellow seed testa or seed skin cracking.② The stress significantly enhanced seed dormancy of Huayu6303,Huayu71,and Huayu9311,while it notably weakened dormancy of five cultivars including Hua-yu6304,Huayu6311,and Huayu6313,etc.③ Saline-alkali stress significantly or highly significantly increased crude fat content in 16 cultivars(e.g.,Huayu6306,Huayu6313,Huayu67,etc).Additionally,it highly significantly or significantly increased the crude protein content of Huayu9307 and Huayu9312,whereas decreased that of Huayu67,Huayu9303,Huayu6303,and Hua-yu9305.The stress significantly reduced the O/L ratio of five cultivars including Huayu6303 and Huayu71,etc.Finally,Hua-yu67,Huayu9306,and Huayu6309,exhibiting strong dormancy and high oil content,Huayu6306,Huayu6307,and Hua-yu6310,exhibiting strong dormancy and high protein content,and Huayu9310 exhibiting strong dormancy and high O/L value,and these seven cultivars were screened for further cultivation in the coastal saline-alkali area of the Yellow River Delta.