Estimating daily minimum grass temperature to quantify frost damage to winter wheat during stem elongation in the central area of Huang-Huai plain in China

Wu, Yihan; Gong, Zaiwu; Ji, Lin; Ma, Juncheng

doi:10.1007/s11356-023-26872-y

Cited by 1 publication

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“…Numerous studies have shown that during the jointing stages of winter wheat, its cold resistance is significantly reduced, making it unable to adapt to the adverse conditions of late spring frost [44,45]. The jointing stage is a critical period that affects the yield of winter wheat, and any LT damage occurring during this stage can cause irreparable losses to the yield [46,47]. In this study, we conducted experiments involving different LT stresses using the commonly cultivated winter wheat variety "Ji Mai 22" in China.…”

Section: Discussionmentioning

confidence: 99%

Effect of Low Temperature on Photosynthetic Characteristics, Senescence Characteristics, and Endogenous Hormones of Winter Wheat “Ji Mai 22” during the Jointing Stage

Zhang,

Jiang,

Zhang

et al. 2023

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To investigate the effects of low-temperature (LT) stress on photosynthetic properties and senescence characteristics of winter wheat leaves during the jointing stage, an environmental temperature control experiment was designed at Nanjing University of Information Science and Technology in 2023, using Triticum aestivum L. cv. “Ji Mai 22” as the test material. Four different temperature levels were set: 18 °C/8 °C (daily maximum/daily minimum temperature; CK), 13 °C/3 °C, 10 °C/0 °C, and 7 °C/3 °C. The duration of each treatment was 2, 4, and 6 days, respectively. The experimental findings reveal that the changes in physiological parameters of winter wheat leaves under low-temperature stress treatments are nonlinear. Under the 3 °C LT treatment, the photosynthetic parameters and endogenous hormone levels of wheat leaves significantly decrease after 6 days of stress. Under the 0 °C LT treatment, the photosynthetic parameters, leaf pigment content, and endogenous hormones of wheat decrease significantly, while under the −3 °C LT treatment, all the parameters of winter wheat leaves show a significant decline. Generally, the “Ji Mai22” wheat cultivar has a lower growth temperature limit of −3 °C during the jointing stage.

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Section: Discussionmentioning

confidence: 99%