Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (1): 1-9.DOI: 10.3969/j.issn.1004-1524.2023.01.01

• Crop Science • Previous Articles     Next Articles

Performance of trehalose treatment on yield formation and quality of post-flowering heat-stressed weak gluten wheat Shengxuan No.6

WANG Ben(), LI Yuxing, LI Zhe, JIANG Fengyi, HUANG Zhenglai(), FAN Yonghui, ZHANG Wenjing, MA Shangyu   

  1. College of Agronomy, Anhui Agricultural University/Key Laboratory of Wheat Biology and Genetic Improvement on South Yellow & Huai River Valley, Ministry of Agriculture and Rural Affairs, Hefei 230036, China
  • Received:2021-09-30 Online:2023-01-25 Published:2023-02-21

Abstract:

To determine the effect of treatment with trehalose on yield formation and quality of post-flowering heat-stressed weak gluten wheat, the experiment was conducted in 2020-2021 at the National Agricultural Science and Technology Park in Huainan, Anhui Province, with high-quality weakly glutenous wheat Shengxuan No. 6 as the test material. The experiment was carried out at heading stage (T1), flowering stage (T2) and 10 days after flowering stage (T3). Treatment concentrations of trehalose were 5 mmol·L-1 (C1), 10 mmol·L-1 (C2), and 15 mmol·L-1 (C3), with equal amounts of water sprayed as control, high temperature treatment was applied 15-19 d after flowering. The analysis showed that trehalose treatment increased grain yield of wheat under post-anthesis high temperature stress and improved the dry matter allocation and proportion of grains, and the dry matter allocation and proportion of nutrient organs displayed a decreasing trend after trehalose treatment, while the transport amount and rate of dry matter stored in nutrient organs before flowering to the grains and the accumulation of dry matter after flowering showed an increasing trend. With the increasing concentration of trehalose treatment the starch content of the grains also showed an increasing trend, and no significant difference was found between the two treatment levels of C2 and C3 in various treatment periods, however, the level of C3 was slightly higher than C2. Trehalose treatment reduced the content of grain albumin, globulin and gliadin protein, but the content of glutenin was higher than CK, and the glutein/gliadin value of the grains under trehalose treatment was significantly higher than CK. The trehalose-treated kernels were significantly different from CK in terms of protein content, wet gluten content, formation time, stabilization time and sedimentation value. The greatest improvement in grain yield and quality was achieved by spraying C3 concentration of trehalose at T1 period compared with CK under the study conditions of this experiment.

Key words: high temperature stress, weakly glutenous wheat, trehalose, yield formation, quality

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