Rui Yu, Xiaofeng Cao, Jia Liu, Ruiqi Nie, Chuanliang Zhang, Meng Yuan, Yanchuan Huang, Xinzhe Liu, Weijun Zheng, Changfa Wang, Tingting Wu, Baofeng Su, Zhensheng Kang, Qingdong Zeng, Dejun Han, Jianhui Wu
Stay-green (SG) in wheat is a beneficial trait that increases yield and stress tolerance. However, conventional phenotyping techniques limited the understanding of its genetic basis. Spectral indices (SIs) as non-destructive tools to evaluate crop temporal senescence provide an alternative strategy. Here, we applied SIs to monitor the senescence dynamics of 565 diverse wheat accessions from anthesis to maturation stages over 2 field seasons. Four SIs (normalized difference vegetation index, green normalized difference vegetation index, normalized difference red edge index, and optimized soil-adjusted vegetation index) were normalized to develop relative stay-green scores (RSGS) as the SG indicators...
2024: Plant phenomics: a science partner journal