Mechanical properties of stem and physiological–biochemical responses of cucumber under different N and K conditions

IF 4.6 3区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Quality Assurance and Safety of Crops & Foods Pub Date : 2022-02-07 DOI:10.15586/qas.v14i1.1035

Yong Liu, Yafei Wang, Guoxin Ma, Bin Wang, Xiaoxue Du, Qiang Shi, J. Ni, H. Mao

引用次数: 0

Abstract

In order to investigate the effects of N and K on the mechanical properties of cucumber stems, the physiological and biochemical indexes under different N and K conditions were compared. The analysis showed that the pho-tosynthetic rate was affected by both stress and the self-senescence of cucumber plants, and that the crops under N and K stress were stimulated to activate a highly effective antioxidant system to cope with the damage. Sugar, as the basis for the synthesis and structure formation of the stems, was highly related to stem strength, and polyphenol oxidase in the study of stem strength was limited but indispensable. Compared with CK, the epidermal penetration strength under LN, LNLK, and LNHK treatments increased by at least 10%, while the strength under HN, LK, HNLK, and HNHK treatments decreased by at least 7%. To sum up, it was the photosynthesis rate, the sucrose transportation, as well as the futile cycling of K+ that were the keys of stem strength.

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不同氮、钾条件下黄瓜茎部力学特性及生理生化反应

为了研究N和K对黄瓜茎部力学性能的影响，比较了不同N和K条件下的生理生化指标。分析表明，光合速率受到胁迫和黄瓜植株自身衰老的影响，在氮和钾胁迫下，作物受到刺激，激活了一个高效的抗氧化系统来应对损伤。糖作为茎的合成和结构形成的基础，与茎的强度高度相关，多酚氧化酶在茎的强度研究中是有限但不可或缺的。与对照相比，LN、LNLK和LNHK处理的表皮穿透强度至少增加了10%，而HN、LK、HNLK和HNHK处理的强度至少降低了7%。总之，光合作用速率、蔗糖运输以及K+的无效循环是茎强度的关键。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Quality Assurance and Safety of Crops & Foods FOOD SCIENCE & TECHNOLOGY-

CiteScore

4.60

自引率

7.50%

发文量

审稿时长

1 months

期刊介绍： ''Quality Assurance and Safety of Crops & Foods'' is an international peer-reviewed journal publishing research and review papers associated with the quality and safety of food and food sources including cereals, grains, oilseeds, fruits, root crops and animal sources. It targets both primary materials and their conversion to human foods. There is a strong focus on the development and application of new analytical tools and their potential for quality assessment, assurance, control and safety. The scope includes issues of risk assessment, traceability, authenticity, food security and socio-economic impacts. Manuscripts presenting novel data and information that are likely to significantly contribute to scientific knowledge in areas of food quality and safety will be considered. ''Quality Assurance and Safety of Crops & Foods'' provides a forum for all those working in the specialist field of food quality and safety to report on the progress and outcomes of their research.