Zheng, Fei and Zhang, Meijing and Zhen, Yiwen and Yuan, Jianhua and Zhao, Wenming and Kong, Lingjie and Liu, Ruixiang and Cui, Yakun and Chen, Jing and Chen, Yanping and Meng, Qingchang (2022) Phenotypical Characterization of a Mutant dea1 With Developmental Defect in Female Inflorescence and Mutantion Impact on Yield in Maize. Journal of Agricultural Science, 14 (2). p. 1. ISSN 1916-9752
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Abstract
The establishment of female inflorescence morphology is of great significance to the formation of final maize yield. defective ear1 (dea1) is a novel maize mutant with developmental defect of female inflorescence caused by natural variation. Morphological analysis revealed that the mutant dea1 was characterized as a “scar-like” crack on the adaxial side of the top of the ear, accounting for 28.6-100.0% of the ear length, with an average of 32.4%. The results of scanning electron microscope showed that there was collapse in the formation of paired spikelet primordium at the base of the axillary meristem. Most of investigated botanical and agronomical traits of dea1 were lower than those of wild type, except for ear length and hundred grain weight. The grain yield per ear of mutant dea1 was 35.93% lower than that of wild type, and the width of mutation crack contributed the most to the yield loss per ear. The identification of the mutant dea1 and the characteristically phenotypic analysis provide a theoretical basis for the study of the molecular regulation mechanism of ear development and the application of high-yield breeding in maize.The establishment of female inflorescence morphology is of great significance to the formation of final maize yield. defective ear1 (dea1) is a novel maize mutant with developmental defect of female inflorescence caused by natural variation. Morphological analysis revealed that the mutant dea1 was characterized as a “scar-like” crack on the adaxial side of the top of the ear, accounting for 28.6-100.0% of the ear length, with an average of 32.4%. The results of scanning electron microscope showed that there was collapse in the formation of paired spikelet primordium at the base of the axillary meristem. Most of investigated botanical and agronomical traits of dea1 were lower than those of wild type, except for ear length and hundred grain weight. The grain yield per ear of mutant dea1 was 35.93% lower than that of wild type, and the width of mutation crack contributed the most to the yield loss per ear. The identification of the mutant dea1 and the characteristically phenotypic analysis provide a theoretical basis for the study of the molecular regulation mechanism of ear development and the application of high-yield breeding in maize.
Item Type: | Article |
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Subjects: | STM One > Agricultural and Food Science |
Depositing User: | Unnamed user with email support@stmone.org |
Date Deposited: | 09 May 2023 06:23 |
Last Modified: | 23 May 2024 06:53 |
URI: | http://publications.openuniversitystm.com/id/eprint/1000 |