Relationship between Grain Filling Parameters and Grain Weight in Leading Wheat Cultivars in the Yellow and Huai Rivers Valley

Miao, Yongjie; Yan, Junya; Zhao, Dehui; Tian, Yubing; Jun-Liang, Yan; Xia, Xianchun; Yong, Zhang; He, Zhonghu

doi:10.3724/sp.j.1006.2018.00260

Cited by 1 publication

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“…In our research, the duration of RIP under different treatments accounted for 27.65∼31.75% of the whole grain-filling duration. Miao et al (2018) found that the duration of RIP is up to 36.9% of the whole grainfilling duration, so we should pay attention to the duration of RIP to obtain a higher grain weight. There is a mechanism that shortens the duration of GIP while prolonging the period of RIP, increasing 100-grain weight (Wei et al, 2019).…”

Section: Nitrogen Affect Grains Weight By Regulating Grain Fillingmentioning

confidence: 99%

Nitrogen Supply Affects Yield and Grain Filling of Maize by Regulating Starch Metabolizing Enzyme Activities and Endogenous Hormone Contents

Yue

Xie

et al. 2022

Front. Plant Sci.

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This study aimed to examine the effect of nitrogen (N) application rate and time on yield, grain filling, starch metabolizing enzymes, and hormones of maize based on a long-term field experiment initiated in 2012. The total N fertilizer dose [(0 (N0), 100 (N1), 200 (N2), and 300 (N3) kg N ha–1] was split into two (T1, one-third at sowing and two-thirds at the six-leaf stage) or three (T2, one-third each at sowing, six-leaf, and eleven-leaf stage) times application. The results showed that the highest yield was obtained under N3T2, N2T1, and N3T2 in 2018, 2019, and 2020, which was 222.49, 185.31, and 194.00% than that of N0 in each year, respectively. N2 and N3 significantly increased the yield through enhancing ears ha–1, grains per plant, and 100-grain weight; however, N2 and N3 did not show a significant difference in yield and above-yield components. In addition, N application time did not significantly change yield under the same N rate. N0 limited the activities of starch metabolizing enzymes, resulting in insufficient accumulation of sucrose and starch. The contents of indole-3-acetic acid, cytokinin, abscisic acid, and gibberellin were decreased under N0 during grain filling. The average grain-filling rate and maximum grain-filling rate (Gmax) and grain weight increment achieving Gmax increased under N2 and N3, and the grain-filling parameters were positively correlated with 100-grain weight. In conclusion, 200 kg N ha–1 with one-third application at sowing and two-thirds application at the six-leaf stage is a suitable N supply way to improve starch metabolizing enzymes, regulate hormone content, and enhance grain-filling rates, and thus increasing the maize yield in the semiarid Loess Plateau of China.

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Section: Nitrogen Affect Grains Weight By Regulating Grain Fillingmentioning

confidence: 99%

Nitrogen Supply Affects Yield and Grain Filling of Maize by Regulating Starch Metabolizing Enzyme Activities and Endogenous Hormone Contents

Yue

Xie

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

Relationship between Grain Filling Parameters and Grain Weight in Leading Wheat Cultivars in the Yellow and Huai Rivers Valley

Cited by 1 publication

References 0 publications

Nitrogen Supply Affects Yield and Grain Filling of Maize by Regulating Starch Metabolizing Enzyme Activities and Endogenous Hormone Contents

Nitrogen Supply Affects Yield and Grain Filling of Maize by Regulating Starch Metabolizing Enzyme Activities and Endogenous Hormone Contents

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