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Water limited stress at jointing stage on fresh waxy maize yield and its interactions with plant density under field conditions

文献类型： 外文期刊

作者： Zhang, Weiqiang 1 ; Wang, Hui 1 ; Pei, Zhichao 3 ; Sun, Pingdong 1 ; Wei, Jihui 1 ; Shi, Biao 1 ; Zheng, Hongjian 1 ; Xu, 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Crop Breeding & Cultivat Res Inst, CIMMYT China Specialty Maize Res Ctr, Shanghai 201403, Peoples R China

2.Henan Inst Sci & Technol Dev Strategy, Zhengzhou 450003, Peoples R China

3.Beijing Agr Technol Extens, Beijing 100029, Peoples R China

4.Henan Inst Sci & Technol, Sch Life Sci & Technol, Xinxiang 453003, Henan, Peoples R China

5.Nanchang Inst Technol, Sch Hydraul & Ecol Engn, Nanchang 330099, Jiangxi, Peoples R China

关键词： Waxy maize; Yield components; Water limited stress; Plant height and ear height; Ear length

期刊名称：DESALINATION AND WATER TREATMENT （ 影响因子：1.254； 五年影响因子：1.553 ）

ISSN： 1944-3994

年卷期： 2020 年 188 卷

页码：

收录情况： SCI

摘要： Background Limited research on waxy maize yield and commercial value in response to water-limited (WL) stress and its interactions with plant density (PD) in the field. Methods: in this study, we examined the effects on two water treatments the water-limited group, and the well-watered (WW) group at one location (Fangshan, China) for fresh waxy maize hybrid URN 2000), and three plant densities (3.75, 5.25, and 6.75 plants m(-2)) in 2017 and 2018 using a block design split randomly in the field. Results: fresh waxy maize ear yield, grain yield, and yield components were affected for all treatments after WL stress lasted more than 9 d at the jointing stage. Compared with the WW treatment, WL treatment significantly decreased the fresh ear yield by 4.95%, due to decreasing ear length in waxy maize. In contrast, fresh grain yield significantly reduced by 3.75%, largely because of decreasing kernel weight and numbers per ear. The optimal PD of fresh ear yield was 6.75 plants m(-2). Conclusions: across all plant densities, WW treatment significantly increased the ear length distribution percentage by 19.19%, which effectively expand the commercial value of fresh ears of waxy maize. We concluded that waxy maize yield and commercial value of single-ear could be enhanced by the application of WW treatment at the jointing stage under field conditions.

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