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作物学报

作物学报 ›› 2025, Vol. 51 ›› Issue (4): 1118-1130.doi: 10.3724/SP.J.1006.2025.41044

• 研究简报 • 上一篇    

高温胁迫下冷型小麦的抗逆性评估及其生理响应研究

李培华1(), 李杰1, 孟祥宇1, 孙玉晨1, 冯永佳1, 李云丽1, 刁邓超1, 赵雯1, 吴玮1, 韩德俊1, 张嵩午2, 郑炜君1,*()   

  1. 1西北农林科技大学农学院, 陕西杨凌 712100
    2西北农林科技大学理学院, 陕西杨凌 712100
  • 收稿日期:2024-06-24 接受日期:2024-12-12 出版日期:2025-04-12 网络出版日期:2024-12-19
  • 通讯作者: 郑炜君, E-mail: zhengweijun@nwafu.edu.cn
  • 作者简介:E-mail: 1344514662@qq.com
  • 基金资助:
    科技创新2030重大专项(2023ZD04026);陕西省重点研发计划一般项目(2023-YBNY-026)

Evaluation of stress tolerance and physiological response of cold-type wheat under heat stress

LI Pei-Hua1(), LI Jie1, MENG Xiang-Yu1, SUN Yu-Chen1, FENG Yong-Jia1, LI Yun-Li1, DIAO Deng-Chao1, ZHAO Wen1, WU Wei1, HAN De-Jun1, ZHANG Song-Wu2, ZHENG Wei-Jun1,*()   

  1. 1College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
    2College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China
  • Received:2024-06-24 Accepted:2024-12-12 Published:2025-04-12 Published online:2024-12-19
  • Contact: E-mail: zhengweijun@nwafu.edu.cn
  • Supported by:
    Science and Technology Innovation 2030 Major Projects(2023ZD04026);Key Research and Development Program of Shaanxi(2023-YBNY-026)

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摘要：

为探究灌浆期高温胁迫对不同温型小麦的影响, 并评估冷型小麦在逆境抗性方面的表现, 本研究选用2个冷型小麦(冷资857和冷资863)、2个暖型小麦(暖资58和暖资979)以及对照品种百农207, 在灌浆期进行高温胁迫, 测定光合参数、抗氧化酶活性以及产量等指标。 结果表明:在高温胁迫下, 所有小麦品种的净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Cd)均有所下降, 而胞间CO2浓度(Ci)上升。Pn下降幅度在不同品种间存在差异, 其中暖资979和暖资58的下降幅度最大, 冷资857和冷资863的下降幅度相对较小。此外, 冷型小麦品种的抗氧化酶活性普遍高于暖型小麦。高温胁迫导致小麦的灌浆快增期提前, 整体灌浆时间缩短, 千粒重和产量均有所下降。冷型小麦品种的产量损失相对较少, 表明其在高温逆境下的抗性更强。抗氧化酶活性与小麦的光合作用之间存在密切的正相关关系。这些指标对于评估小麦的产量潜力和抗逆性具有重要意义。综上所述, 本研究揭示了冷型小麦在灌浆期高温胁迫下的抗逆性优势, 并为冷型小麦品种的选育提供了科学依据, 同时为深入理解冷型小麦的抗逆机制奠定了基础。

关键词: 冷型小麦, 高温胁迫, 光合特性, 抗氧化酶活性, 产量

Abstract:

This study aimed to investigate the effects of high-temperature stress on wheat varieties with different temperature adaptations and to assess the stress resistance of cold-type wheat. Two cold-type wheat varieties (Lengzi 857 and Lengzi 863), two warm-type wheat varieties (Nuanzi 58 and Nuanzi 979), and the control variety Bainong 207 were selected as research materials. Photosynthetic parameters, antioxidant enzyme activities, and yield were measured during the grain-filling stage under high-temperature stress. The results showed that high-temperature stress reduced the net photosynthetic rate, transpiration rate, and stomatal conductance in all varieties, while intercellular CO2 concentration increased. The decline in net photosynthetic rate was most severe in the warm-type varieties (Nuanzi 979 and Nuanzi 58) and least pronounced in the cold-type varieties (Lengzi 857 and Lengzi 863). Antioxidant enzyme activity was generally higher in the cold-type varieties compared to the warm-type ones. High-temperature stress also shortened the grain-filling period by advancing the rapid filling phase, resulting in reduced thousand-grain weight and overall yield. However, yield losses in cold-type varieties were comparatively smaller, reflecting their stronger resistance to high-temperature stress. A positive correlation was observed between antioxidant enzyme activity and photosynthetic performance, suggesting that antioxidant enzyme activity is a key indicator for evaluating yield potential and stress resistance in wheat. In conclusion, this study underscores the superior stress resistance of cold-type wheat during the grain-filling stage under high-temperature stress, providing a scientific basis for breeding cold-type wheat varieties and advancing the understanding of stress resistance mechanisms in wheat.

Key words: cold-type wheat, high temperature stress, photosynthetic characteristics, antioxidant enzyme activity, yield

图1

2022年与2023年高温胁迫试验温度信息 图A与B分别为2022年和2023年大棚与自然环境的温度差异。*为显著差异(P ≤ 0.05); ** 为极显著差异 (P ≤ 0.01); ns为无显著差异。"

图2

高温胁迫与正常生长条件下不同温型小麦品种冠层温度的变化 横轴代表处理后的天数, 纵轴代表百农207与不同小麦材料的冠层温度差值。Lengzi 863: 冷资863; Lengzi 857: 冷资857; Nuanzi 979: 暖资979; Nuanzi 58: 暖资58。(A): 正常生长条件下(2022年); (B): 搭棚条件下(2022年); (C): 正常生长条件下(2023年); (D): 搭棚条件下(2023年)。"

图3

高温胁迫对不同温型小麦光合特性的影响 I: 净光合速率; II: 蒸腾速率; III: 气孔导度;IV: 胞间CO2浓度。A: 冷资857; B: 冷资863; C: 暖资58; D: 暖资979; E: 百农207。"

表1

2022年灌浆期高温胁迫对不同抗氧化酶活性的影响"

抗氧化酶Antioxidant enzyme 品种
Variety		 处理第1天
Day 1		 处理第6天
Day 6		 处理第11天
Day 11
对照CK 热处理HT 对照CK 热处理HT 对照CK 热处理HT
超氧化物歧化酶
SOD
(U g-1)		 暖资58
Nuanzi 58		 286.36 ± 6.41 ab 291.31 ± 6.29 a 284.95 ± 5.30 a 265.76 ± 8.80 a 240.81 ± 3.84 a 226.67 ± 2.98 a
暖资979 Nuanzi 979 291.92 ±1.83 b 297.68 ± 2.29 ab 293.54 ± 6.24 a 278.99 ± 6.30 b 260.40 ± 5.36 b 239.60 ± 6.07 b
百农207 Bainong 207 279.60 ± 6.82 a 287.27 ± 0.91 a 285.25 ± 1.40 a 287.68 ± 2.82 bc 252.83 ± 13.57 ab 239.29 ± 3.65 b
冷资857 Lengzi 857 286.57 ± 3.79 ab 307.47 ± 12.76 b 286.36 ± 8.40 a 293.84 ± 6.48 c 258.48 ± 7.87 ab 257.47 ± 5.39 c
冷资863 Lengzi 863 289.80 ± 5.39 b 311.01 ± 8.87 b 285.66 ± 4.44 a 292.42 ± 7.47 c 267.88 ± 12.08 b 269.19 ± 1.56 d
过氧化物酶POD
(U g-1)		 暖资58
Nuanzi 58		 117.12 ± 11.66 ab 125.80 ± 10.03 a 139.17 ± 9.03 b 113.83 ± 12.39 ab 126.86 ± 10.33 b 100.67 ± 5.18 a
暖资979 Nuanzi 979 132.43 ± 9.30 b 123.77 ± 5.30 a 111.99 ± 5.86 a 108.64 ± 11.53 a 126.65 ± 2.02 b 103.50 ± 14.00 b
百农207 Bainong 207 111.39 ± 4.54 a 116.99 ± 4.58 a 106.75 ± 5.94 a 111.14 ± 4.47 a 95.48 ± 5.03 a 88.09 ± 7.11 a
冷资857 Lengzi 857 113.07 ± 11.92 a 128.91 ± 5.75 a 129.36 ± 11.61 b 119.78 ± 4.20 ab 123.69 ± 11.45 b 107.14 ± 4.69 b
冷资863 Lengzi 863 112.63 ± 7.91 a 121.78 ± 2.44 a 139.39 ± 5.08 b 129.92 ± 11.54 bb 111.61 ± 9.29 b 107.81 ± 0.62 b
过氧化氢酶CAT
(U g-1)		 暖资58
Nuanzi 58		 117.71 ± 2.46 bc 100.23 ± 4.25 ab 107.26 ± 2.79 b 90.28 ± 1.65 a 94.72 ± 1.35 ab 85.48 ± 2.04 a
暖资979 Nuanzi 979 109.70 ± 3.62 a 97.09 ± 5.34 a 102.04 ± 2.23 a 89.80 ± 4.08 a 89.75 ± 3.81 a 81.25 ± 2.60 a
百农207 Bainong 207 111.22 ± 3.12 ab 98.12 ± 3.70 a 104.39 ± 1.55 ab 91.86 ± 1.62 a 96.00 ± 2.82 b 87.20 ± 6.39 a
冷资857 Lengzi 857 121.36 ± 4.78 c 112.42 ± 4.07 c 112.36 ± 2.12 c 105.56 ± 0.56 c 106.27 ± 3.59 c 102.62 ± 3.27 c
冷资863 Lengzi 863 113.80 ± 3.48 ab 107.08 ± 0.27 bc 104.05 ± 2.85 ab 99.17 ± 2.40 b 98.04 ± 2.85 b 94.96 ± 3.07 b
抗氧化酶Antioxidant enzyme 品种
Variety		 处理第16天
Day 16		 处理第21天
Day 21		 处理第26天
Day 26
对照CK 热处理HT 对照CK 热处理HT 对照CK 热处理HT
超氧化物歧化酶
SOD
(U g-1)		 暖资58
Nuanzi 58		 212.63 ± 8.65 a 182.73 ± 14.71 a 179.70 ± 7.90 ab 152.02 ± 12.06 a 146.87 ± 7.79 a 121.60 ± 10.59 a
暖资979 Nuanzi 979 220.00 ± 1.09 ab 179.80 ± 10.04 a 170.30 ± 11.65 a 153.23 ± 19.16 a 158.79 ± 10.01 a 120.91 ± 7.59 a
百农207 Bainong 207 227.07 ± 12.28 b 178.79 ± 7.50 a 187.78 ± 5.22 b 167.17 ± 9.56 a 160.00 ± 8.42 a 135.45 ± 14.86 ab
冷资857 Lengzi 857 248.08 ± 3.04 c 216.06 ± 1.39 b 217.37 ± 6.68 c 202.53 ± 10.85 b 187.37 ± 11.85 b 167.78 ± 18.10 c
冷资863 Lengzi 863 254.04 ± 6.40 c 219.19 ± 10.22 b 226.26 ± 11.02 c 199.80 ± 2.91 b 191.82 ± 3.64 b 158.08 ± 13.46 bc
过氧化物酶POD
(U g-1)		 暖资58
Nuanzi 58		 103.56 ± 12.95 a 91.41 ± 11.27 abc 93.08 ± 8.11 abc 62.41 ± 8.24 a 82.80 ± 7.93 b 55.05 ± 11.04 a
暖资979 Nuanzi 979 100.71 ± 9.31 a 82.51 ± 3.65 a 82.43 ± 9.13 a 88.66 ± 3.41 b 60.62 ± 1.93 a 72.40 ± 5.80 ab
百农207 Bainong 207 90.87 ± 8.04 a 87.44 ± 9.06 ab 84.05 ± 12.41 ab 81.28 ± 8.40 ab 77.93 ± 4.03 b 73.29 ± 7.81 ab
冷资857 Lengzi 857 107.43 ± 11.22 a 99.59 ± 9.27 bc 103.68 ± 5.78 c 98.11 ± 13.63 b 88.36 ± 14.96 b 84.12 ± 5.05 b
冷资863 Lengzi 863 101.94 ± 8.52 a 106.12 ± 4.52 c 100.29 ± 5.41 bc 92.01 ± 17.63 b 86.30 ± 5.74 b 82.88 ± 15.20 b
过氧化氢酶CAT
(U g-1)		 暖资58
Nuanzi 58		 87.97 ± 2.23 ab 73.13 ± 1.04 a 82.65 ± 2.83 b 70.83 ± 1.28 a 75.70 ± 0.54 b 65.17 ± 0.80 ab
暖资979 Nuanzi 979 84.48 ± 1.11 a 71.35 ± 1.62 a 74.67 ± 1.31 a 71.29 ± 2.55 a 70.53 ± 3.28 a 63.82 ± 1.23 a
百农207 Bainong 207 87.70 ± 1.90 ab 72.89 ± 0.67 a 75.91 ± 3.26 a 70.69 ± 1.25 a 73.24 ± 1.13 ab 68.20 ± 2.29 b
冷资857 Lengzi 857 96.56 ± 0.96 c 91.79 ± 2.58 c 91.50 ± 4.81 c 82.66 ± 1.59 c 83.04 ± 2.47 c 76.09 ± 2.13 c
冷资863 Lengzi 863 91.47 ± 3.46 b 84.62 ± 4.26 b 86.34 ± 2.81 bc 77.22 ± 1.70 b 80.51 ± 2.33 c 76.23 ± 3.32 c

表2

2023年灌浆期高温胁迫对不同抗氧化酶活性的影响"

抗氧化酶Antioxidant enzyme 品种
Variety		 处理第1天
Day 1		 处理第6天
Day 6		 处理第11天
Day 11
对照CK 热处理HT 对照CK 热处理HT 对照CK 热处理HT
超氧化物歧化酶
SOD
(U g-1)		 暖资58
Nuanzi 58		 234.86 ± 2.16 a 255.86 ± 4.41 a 234.77 ± 1.44 a 242.34 ± 4.41 a 231.17 ± 5.59 a 233.33 ± 5.32 a
暖资979 Nuanzi 979 251.35 ± 12.97 b 272.16 ± 3.24 b 247.12 ± 9.10 b 257.75 ± 4.14 b 244.68 ± 11.53 a 247.84 ± 1.89 b
百农207 Bainong 207 248.74 ± 3.96 b 268.29 ± 3.87 b 253.24 ± 2.97 b 259.28 ± 4.5 b 241.98 ± 8.29 a 245.77 ± 7.48 b
冷资857 Lengzi 857 249.82 ± 5.59 b 289.10 ± 3.60 c 253.42 ± 4.41 b 279.19 ± 4.05 c 244.95 ± 8.56 a 262.97 ± 9.46 c
冷资863 Lengzi 863 250.00 ± 5.14 b 285.77 ± 4.77 c 251.80 ± 5.77 b 273.15 ± 3.87 c 244.77 ± 7.12 a 260.54 ± 2.97 c
过氧化物酶POD
(U g-1)		 暖资58
Nuanzi 58		 134.32 ± 8.69 ab 146.22 ± 8.43 ab 127.14 ± 7.35 ab 131.88 ± 2.48 ab 123.80 ± 8.49 a 111.54 ± 9.33 ab
暖资979 Nuanzi 979 126.36 ± 8.77 ab 135.26 ± 8.98 ab 122.29 ± 8.97 ab 124.21 ± 5.06 ab 115.04 ± 9.11 a 106.54 ± 7.45 a
百农207 Bainong 207 119.40 ± 14.63 a 129.65 ± 13.71 a 113.32 ± 9.08 a 116.73 ± 15.79 a 114.85 ± 7.19 a 111.63 ± 11.57 ab
冷资857 Lengzi 857 144.19 ± 4.01 b 163.73 ± 7.82 c 142.28 ± 6.88 b 151.44 ± 4.86 c 147.35 ± 20.28 b 145.64 ± 14.89 c
冷资863 Lengzi 863 135.86 ± 9.55 ab 152.31 ± 4.70 bc 128.10 ± 13.07 ab 139.54 ± 9.43 bc 131.06 ± 4.90 ab 130.39 ± 1.84 bc
过氧化氢酶CAT
(U g-1)		 暖资58
Nuanzi 58		 106.81 ± 5.73 ab 96.64 ± 1.79 a 100.15 ± 6.21 a 91.86 ± 2.00 a 89.22 ± 4.82 a 83.93 ± 8.12 a
暖资979 Nuanzi 979 100.48 ± 4.50 a 94.84 ± 2.60 a 101.37 ± 3.70 a 91.63 ± 1.75 a 89.63 ± 16.83 a 83.78 ± 7.91 a
百农207 Bainong 207 104.99 ± 5.83 ab 98.68 ± 2.20 ab 98.06 ± 3.18 a 91.56 ± 2.11 a 94.07 ± 7.14 a 87.22 ± 5.00 a
冷资857 Lengzi 857 115.07 ± 9.94 b 107.34 ± 1.94 c 110.85 ± 4.26 b 104.41 ± 1.53 c 105.93 ± 14.80 a 102.67 ± 3.80 b
冷资863 Lengzi 863 106.98 ± 4.33 ab 101.21 ± 3.06 b 104.00 ± 2.25 ab 97.04 ± 1.59 b 91.63 ± 4.63 a 91.11 ± 2.94 a
抗氧化酶Antioxidant enzyme 品种
Variety		 处理第16天
Day 16		 处理第21天
Day 21		 处理第26天
Day 26
对照CK 热处理HT 对照CK 热处理HT 对照CK 热处理HT
超氧化物歧化酶SOD
(U g-1)		 暖资58
Nuanzi 58		 214.86 ± 5.68 a 201.53 ± 3.60 ab 184.23 ± 1.17 a 175.05 ± 2.25 ab 155.95 ± 5.41 a 150.00 ± 14.32 a
暖资979 Nuanzi 979 227.12 ± 12.07 ab 196.13 ± 3.60 a 190.81 ± 3.78 a 169.46 ± 5.14 a 164.68 ± 1.53 ab 140.09 ± 5.32 a
百农207 Bainong 207 223.06 ± 7.75 ab 210.54 ± 4.86 b 189.19 ± 3.24 a 185.95 ± 6.22 b 166.22 ± 5.68 ab 164.41 ± 8.02 b
冷资857 Lengzi 857 234.05 ± 0.54 b 234.50 ± 13.33 c 213.96 ± 9.01 b 220.36 ± 8.74 c 177.21 ± 5.77 b 172.34 ± 3.06 b
冷资863 Lengzi 863 235.50 ± 12.34 b 230.99 ± 4.14 c 219.46 ± 7.84 b 220.72 ± 6.76 c 174.77 ± 3.87 b 174.50 ± 6.04 b
过氧化物酶POD
(U g-1)		 暖资58
Nuanzi 58		 111.70 ± 5.01 bc 99.67 ± 9.27 ab 98.39 ± 10.38 ab 91.73 ± 7.16 bc 74.21 ± 12.57 a 69.58 ± 6.51 ab
暖资979 Nuanzi 979 97.70 ± 6.54 a 90.73 ± 5.77 a 83.14 ± 21.32 a 79.91 ± 5.74 ab 68.93 ± 14.41 a 64.14 ± 6.03 a
百农207 Bainong 207 101.30 ± 9.46 ab 94.91 ± 10.50 a 85.25 ± 4.32 ab 77.72 ± 4.06 a 79.40 ± 2.87 a 66.31 ± 9.00 a
冷资857 Lengzi 857 126.55 ± 7.53 d 124.65 ± 21.59 c 112.91 ± 19.98 b 106.45 ± 9.91 d 91.78 ± 15.48 a 82.91 ± 5.72 b
冷资863 Lengzi 863 121.17 ± 4.62 cd 120.43 ± 9.01 bc 108.64 ± 5.69 ab 100.37 ± 6.32 cd 92.67 ± 13.07 a 83.10 ± 7.98 b
过氧化氢酶CAT
(U g-1)		 暖资58
Nuanzi 58		 83.07 ± 1.84 a 76.29 ± 3.45 a 78.83 ± 3.41 a 73.16 ± 0.96 a 71.45 ± 1.57 a 69.82 ± 1.25 b
暖资979 Nuanzi 979 80.58 ± 2.29 a 72.96 ± 1.70 a 74.14 ± 3.72 a 71.07 ± 2.16 a 71.67 ± 1.79 a 67.98 ± 1.00 a
百农207 Bainong 207 83.32 ± 1.49 a 77.23 ± 3.56 a 77.40 ± 2.72 a 72.46 ± 1.33 a 74.91 ± 1.61 a 70.06 ± 0.59 b
冷资857 Lengzi 857 100.18 ± 6.92 b 95.67 ± 2.56 c 91.88 ± 2.61 c 87.06 ± 1.56 c 85.88 ± 2.23 c 82.15 ± 0.25 d
冷资863 Lengzi 863 88.29 ± 4.74 a 86.48 ± 2.57 b 85.08 ± 2.02 b 82.02 ± 1.94 b 82.21 ± 2.20 b 80.20 ± 0.75 c

图4

不同温型小麦品种在自然生长和热胁迫处理条件下千粒重增长曲线 A: 2022年; B: 2023年。A: results in 2022; B: results in 2023."

图5

不同小麦品种在自然生长和热胁迫处理条件下灌浆速率的变化趋势 A: 2022年; B: 2023年。"

表3

2022年高温处理后不同小麦品种的产量及其构成要素"

品种
Variety		 处理
Treatment		 单株穗数
Spikes per plant		 穗粒数
Grains per spike		 千粒重
1000-grain weight (g)		 产量
Yield (kg hm-2)		 减产幅度
Decrease rate
(%)
平均值
Average value		 F值
F-value		 平均值
Average value		 F值
F-value		 平均值
Average value		 F值
F-value		 平均值
Average value		 F值
F-value
冷资857
Lengzi 857		 对照CK 4.20 1.60 36.91 0.67 49.36 66.29** 9183.60 11.90* 7.04
热处理HT 4.17 36.57 47.15 8536.95
百农207
Bainong 207		 对照CK 4.20 12.25* 38.46 3.71 42.45 41.36** 8227.35 66.99** 12.66
热处理HT 4.08 37.34 39.28 7186.05
暖资979
Nuanzi 979		 对照CK 4.03 0.45 37.31 1.81 42.15 285.74** 7613.25 27.88** 13.04
热处理HT 3.98 36.28 38.20 6620.10
暖资58
Nuanzi 58		 对照CK 4.08 3.50 35.85 1.81 44.50 281.90** 7816.35 77.31** 11.94
热处理HT 3.97 35.05 41.26 6883.20
冷资863
Lengzi 863		 对照CK 4.15 4.00 37.59 0.11 50.44 42.60** 9441.00 16.73* 5.57
热处理HT 4.08 37.43 48.60 8914.80

表4

2023年高温处理后不同小麦品种的产量及其构成要素"

品种
Variety		 处理
Treatment		 单株穗数
Spikes per plant		 穗粒数
Grains per spike		 千粒重
1000-grain weight (g)		 产量
Yield (kg hm-2)		 减产幅度
Decrease rate (%)
平均值
Average value		 F值
F-value		 平均值
Average value		 F值
F-value		 平均值
Average value		 F值
F-value		 平均值
Average value		 F值
F-value
冷资857
Lengzi 857		 对照CK 4.18 0.02 36.69 0.31 46.46 147.89** 8554.65 0.59 5.61
热处理HT 4.15 36.32 44.65 8075.10
百农207
Bainong 207		 对照CK 4.01 0.11 38.37 5.26 39.31 73.16** 7266.15 8.41* 8.66
热处理HT 3.98 37.58 37.02 6637.20
暖资979
Nuanzi 979		 对照CK 3.96 0.94 36.25 3.98 39.30 146.43** 6775.65 19.48* 10.51
热处理HT 3.90 35.49 36.54 6063.75
暖资58
Nuanzi 58		 对照CK 4.00 1.00 36.48 0.03 41.80 107.01** 7184.40 10.10* 7.11
热处理HT 3.93 35.70 39.60 6673.50
冷资863
Lengzi 863		 对照CK 4.12 0.02 37.17 0.05 48.01 61.03** 8809.65 0.99 3.90
热处理HT 4.09 37.00 46.59 8466.30

表5

不同温型品种的2年热敏感指数"

年份
Year		 品种
Variety		 热处理
Heat treatment		 对照
CK		 热敏感指数
HSI		 评价
Evaluation
2022 冷资857 Lengzi 857 47.15 49.36 0.71 中等耐热 Moderate heat resistant
百农207 Bainong 207 39.28 42.45 1.19 中等热敏感 Moderate heat sensitivity
暖资979 Nuanzi 979 38.20 42.15 1.49 中等热敏感 Moderate heat sensitivity
暖资58 Nuanzi 58 41.26 44.50 1.16 中等热敏感 Moderate heat sensitivity
冷资863 Lengzi 863 48.60 50.44 0.58 中等耐热 Moderate heat resistant
2023 冷资857 Lengzi 857 44.65 46.46 0.80 中等耐热 Moderate heat resistant
百农207 Bainong 207 37.02 39.31 1.19 中等热敏感 Moderate heat sensitivity
暖资979 Nuanzi 979 36.54 39.30 1.44 中等热敏感 Moderate heat sensitivity
暖资58 Nuanzi 58 39.60 41.80 1.08 中等热敏感 Moderate heat sensitivity
冷资863 Lengzi 863 46.59 48.01 0.61 中等耐热 Moderate heat resistant

图6

高温胁迫下小麦旗叶生理特性和籽粒产量的相关性分析 A: 2022年; B: 2023年。SOD: 超氧化物歧化酶; POD: 过氧化物酶; CAT: 过氧化氢酶; Pn: 净光合速率; Cd: 气孔导度; Tr: 蒸腾速率; Ci: 胞间CO2浓度; Yield: 产量。*为显著差异(P ≤ 0.05)。"

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