Evaluation of lodging resistance in rice based on an optimized parameter from lodging index
文献类型： 外文期刊
作者： Luo, Xiaoyun 1 ; Wu, Zefang 3 ; Fu, Lu 1 ; Dan, Zhiwu 1 ; Yuan, Zhengqing 1 ; Liang, Ting 1 ; Zhu, Renshan 1 ; Hu, Zhongli 1 ; Wu, Xianting 1 ;
作者机构： 1.Wuhan Univ, State Key Lab Hybrid Rice, Wuhan 430072, Peoples R China
2.Wuhan Univ, Coll Life Sci, Wuhan 430072, Peoples R China
3.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610000, Peoples R China
期刊名称：CROP SCIENCE （ 影响因子：2.763； 五年影响因子：2.856 ）
ISSN： 0011-183X
年卷期： 2022 年 62 卷 3 期
页码：
收录情况： SCI
摘要： Lodging is being increasingly recognized as a critical concern among crop breeders worldwide as it causes a significant reduction in the grain yield and quality of multiple cereal crops. The lodging index is frequently used for evaluating the lodging resistance of rice (Oryza sativa L.) crops. However, the application of lodging index for comparing lodging susceptibility between different rice cultivars is inadequate under certain special conditions. This study was aimed to identify optimized parameters that would evaluate the lodging susceptibility and could then be used along with the lodging index for further assessing the lodging resistance. A total of 32 representative rice accessions from different countries were grown at two different locations on three different sowing dates over a period of 3 yr. The analysis of the lodging index of the different rice cultivars revealed the lodging index value of 200 as the critical threshold value of the evaluated rice accessions. Subsequently, an optimized parameter from the lodging index was proposed. This parameter could be interpreted as the magnitude of the external force that the basal second internode could withstand. A comparison of the optimized parameter values of different rice accessions revealed a previously unknown lodging-resistant variety R379. The application of the optimized parameter would enable an accurate determination and comparison of the lodging resistance among different rice cultivars, thereby contributing to the effective selection of lodging-resistant cultivars in rice breeding programs.
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