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The anatomical structure character of raspberry stems is a key factor affecting its cold resistance

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Abstract

Red raspberries (Rubus idaeus L.) are economically important fruits, being highly valued for their taste and medicinal properties. However, low temperature is one of the important limiting factors for crop growth, raspberries must be kept in the soil from coldness to ensure their survival during overwintering in most areas of China. To explore the difference of cold resistance among different species, 2 wild red raspberry species and 3 cultivated species were used as the test materials in this experiment, the anatomical structure and physiological indices were analyzed comprehensively. Stem issues were dyed by Safranine and Fast Green and made in paraffin section. The experiment showed that all cold resistance physiological indices of wild raspberry species was significantly better than that of the cultivars. In terms of anatomical structure, wild varieties have higher phloem ratio, phloem fiber layers, larger diameter vessels, lower pith ratio and pith cell damage rate compared to cultivated species. According to the comprehensive analysis of the membership function, the cold resistance of the wild species is better than that of the cultivated species. Synthesizing the correlation among the anatomical structure indices, the phloem ratio in the anatomical structure of the 1-year-old stem of raspberry has a significant correlation with almost indicators, which can be used as a crucial anatomical factor that affects the cold resistance of the stem of red raspberry.

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... Cellular water content and its state of existence are important factors that affect the metabolic intensity, growth rate, and resistance of plants. Low temperatures can easily cause intercellular water to freeze and evaporate, resulting in the weakening of plant resistance to low temperatures [46]. The total water content of clone 530 decreased the most under low-temperature stress conditions. ...
... In the present study, we found that branch xylem thickness, proportion, and vessel density of the coldresistant Z. jujuba var. spinosa clones, such as 89 and 90, were significantly greater than those of the other clones, which may be because the branches had a high degree of lignification and vessel density, which enhanced the plants' water transport capacity, thereby strengthening their adaptation to low temperatures [46,64]. Thin-walled phloem cells typically contain starch and other substances that serve as osmotic protectants, preventing cell membrane damage caused by dehydration or low temperatures [65,66]. ...
... In the present study, strongly cold-resistant clones demonstrated higher phloem ratios and resistance to low-temperature stress by accumulating more soluble sugars. It is tentatively inferred that the thicker a plant's phloem layer, the higher the content of phloem fibers, which makes it more flexible and enhances its ability to withstand low temperatures [46]. The cortex is composed mostly of living cells and is significantly influenced by the external environmental conditions [46]. ...
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Physiological responses of the branches of Zizyphus jujuba to low temperature stress under three sampling methods
  • Adili
Summary of physiological characteristics of plant cold resistanse
  • Cheng
Recovery after freezing effect of sugar concentration on cold acclimation in Avena sativa L. Lolium perenne L. and L. multiorum Lam
  • Eagles
Two kinds of blackberry and raspberry fruit ripe raspberry comparison of anatomical structures
  • Diao
Relationship between leaf anatomical structure and drought resistance different varieties of raspberry
  • Gui
Introduction performance of four Russian plum cultivars in Mudanjiang, Heilongjiang Province. China
  • Lin
Morphological observation on root vessel elements of different cold resistance grape cultivars
  • Wang
Evaluation of cold resistance of ten pear cultivars by conductivity method
  • Guo
Relationship between leaf anatomical structure and trunk cold resistance of 16 peach cultivars
  • Guo
Study on the shoot tissue structure of apricot varieties in relation to cold resistance
  • Peng
Genomics-based crop germplasm research: advances and perspectives
  • Li
Anatomical structure of leaves of 13 rasberry and blackberry varieties and their drought resistance features
  • Peng
Cold resistance comparison of 11 varieties of Hemerocallis fulva
  • Su
Study on overwintering ability of red raspberry
  • Xue
The relationship between stem anatomical structure and drought resistance in 4 varieties of raspberry
  • Zhang
Study on the relationship between stem structure and cold resistance of different species of Paeonia rockii
  • Tang
Resarch advance on cold-resistant gene in plants
  • Wang
Study on the relationship between tissue structure and cold resistance of peach branches
  • Wang
Changes of anatomical structure of salt tolerant mutant of raspberry leaves
  • Zhang
Study on the shoot tissue structure of Chimonanthus varieties in relation to cold resistance
  • Zhang