Effects of spraying exogenous cytokinin or spermine on the starch physicochemical properties of waxy maize exposed to post-silking high temperature

Yan, Yini; Wang, Long-Fei; Lu, Dalei

doi:10.1016/j.jcs.2020.103040

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…T p and T c in YN7 were unaffected by temperatures, whereas those two parameters in SYN5 were unaffected by T3 and decreased by T1 and T2 and the decrease were severe under T1. Though the gelatinization temperatures ( T o , T p , and T c ) differed among the four temperature regimes, the low coefficient of variation (1.2, 0.8, and 1.0 for T o , T p , and T c , respectively) indicated that the difference was meaningless, and this finding was consistent with those obtained in our previous study ( Yan, Wang, & Lu, 2020 ) and the observation on wheat ( Wang et al, 2017 ). In studies on rice starch, researchers observed that the gelatinization characteristics in response to HS during grain filling depended on the cultivar ( Hu et al, 2021 , Yao et al, 2020 ), whereas night HS during grain filling increased gelatinization characteristics ( Song et al, 2015 ).…”

Section: Resultssupporting

confidence: 91%

“…The severe decrease of pasting viscosities in SYN5 at T1 and T3 indicated this hybrid more sensitive to HS than YN7. In our previous study, PV, TV, BD, and FV were reduced by post-silking HS, but P temp response was dependent on hybrids ( Wang et al, 2021 , Yan et al, 2020 ). The decreased pasting viscosities under T2 and T3 may be because the starch was composed of large starch granules with pitting holes and long amylopectin chains and had high relative crystallinity ( Fig.…”

Section: Resultsmentioning

confidence: 67%

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Starch structural and functional properties of waxy maize under different temperature regimes at grain formation stage

Zhang

et al. 2022

Food Chemistry: X

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 67%

Starch structural and functional properties of waxy maize under different temperature regimes at grain formation stage

Zhang

et al. 2022

Food Chemistry: X

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“…Exogenous BR application promotes sucrose transport to young rice panicles and improves sucrose utilization under ambient and high temperatures [20]. BR application remarkably alleviates the effect of post-silking HS on the starch quality of waxy maize [21]. However, there is a knowledge gap regarding BR application on the accumulation and remobilization of biomass and nitrogen in fresh food crops, such as waxy maize, sweet maize, soybean, and horse beans, under HS during grain filling.…”

Section: Introductionmentioning

confidence: 99%

Foliar Brassinolide Sprays Ameliorate Post-Silking Heat Stress on the Accumulation and Remobilization of Biomass and Nitrogen in Fresh Waxy Maize

Zhang

Yang

et al. 2022

Agronomy

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Heat stress (HS) during grain filling is an extreme environmental factor and affects plant growth and development. Foliar application of exogenous brassinolide (BR) is an effective practice to relieve HS injuries, but the influence on the accumulation and remobilization of biomass and nitrogen is still unclear. In the present study, the effect of foliar BR application at the silking stage on the accumulation and remobilization of biomass and nitrogen in fresh waxy maize under ambient (28/20 °C) and high (35/27 °C) temperatures during grain filling were studied in a phytotron using heat-sensitive Yunuo7 (YN7) and heat-tolerant Jingkenuo2000 (JKN2000) as materials. HS reduced the fresh ear yield by 21.8% and 19.8% in YN7 and JKN2000, respectively, but fresh grain yield was only reduced in the heat-sensitive hybrid (6.9%) and unaffected in the heat-tolerant hybrid. BR application improved the yields of fresh ears (11.3% and 10.9% in YN7 and JKN2000, respectively) and grains (19.9% and 13.2% in YN7 and JKN2000, respectively) under HS, and the increases were higher in YN7. HS decreased the post-silking biomass accumulation by 67.3% and 51.8%, and nitrogen deposition by 61.9% and 50.5%, in YN7 and JKN2000, respectively. The remobilization of pre- and post-silking biomass and nitrogen were increased and decreased by HS in YN7, respectively, but both were unaffected in JKN2000. Under HS, BR application increased the remobilization of post-silking biomass and nitrogen in both hybrids. The grain nitrogen concentration was increased by HS but decreased by BR application in both hybrids. The harvest index of biomass and nitrogen was increased by HS, and it was improved in YN7 and unaffected in JKN2000 by BR application under HS. In conclusion, BR application at the silking stage can relieve HS injuries on fresh waxy maize yields by improving the remobilization of biomass and nitrogen to grain and increasing the harvest index, especially in the heat-sensitive hybrid. Therefore, foliar BR application is a simple, feasible, efficient practice in fresh waxy maize production and is worth popularizing, especially under warmer climates.

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Effects of exogenous salicylic acid on starch physicochemical properties and in vitro digestion under heat stress during the grain-filling stage in waxy maize

Wang,

Qu,

et al. 2024

International Journal of Biological Macromolecules

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Effects of spraying exogenous cytokinin or spermine on the starch physicochemical properties of waxy maize exposed to post-silking high temperature

Cited by 4 publications

References 29 publications

Starch structural and functional properties of waxy maize under different temperature regimes at grain formation stage

Starch structural and functional properties of waxy maize under different temperature regimes at grain formation stage

Foliar Brassinolide Sprays Ameliorate Post-Silking Heat Stress on the Accumulation and Remobilization of Biomass and Nitrogen in Fresh Waxy Maize

Effects of exogenous salicylic acid on starch physicochemical properties and in vitro digestion under heat stress during the grain-filling stage in waxy maize

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