Scholarlink

Background and Aims <p>Stone fruit trees (<i>Prunus</i> spp.) are cultivated in semi-arid to temperate climates which are areas prone to water deficit. Rootstocks contribute significantly to the development of more resilient trees; however, their role in determining drought tolerance across different fruit varieties remains poorly understood. This study assessed the influence of rootstocks over&#xa0;drought tolerance in multiple&#xa0;<i>Prunus</i>&#xa0;species&#xa0;and&#xa0;their potential interactions.</p> Methods <p>Experiments were conducted using 20-L container with two contrasting rootstocks (drought-tolerant and drought-sensitive), grafted with seven different <i>Prunus</i> species. The plants were subjected to a progressive water deficit until the transpiration nearly stopped. Parallel experiments using ungrafted rootstocks in rhizotrons were conducted to monitor root growth over time.</p> Results <p>Physiological and growth parameters were measured in rootstocks and scions. Although rootstocks did not significantly affect leaf water relations, they strongly influenced growth under water deficit across all grafted species. Grafted tree tolerance is related to rootstock tolerance and their interactions with scions. Rhizotron experiments in ungrafted plants evidenced higher root growth in the sensitive rootstock but a shallower distribution, potentially limiting its ability to access deeper soil water.</p> Conclusion <p>This study demonstrated that rootstocks and their interactions have a broad effect on drought response in grafted <i>Prunus</i> species, influencing both the onset of stress symptoms and tree growth. A candidate factor could be root growth pattern, although specific interactions among rootstocks and scions also play a significant role. Further research is required to elucidate the mechanisms that influence drought tolerance in grafted fruit trees.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The role of rootstock-scion interactions in mitigating drought stress across Prunus species

  • 期刊论文

  • 发表日期：

    2025年7月30日

查看全文
  • Ismael Opazo,
  • Luis Villalobos-González,
  • Marco Garrido,
  • Carlos Faundez,
  • Guillermo Toro,
  • Ariel Salvatierra,
  • Mauricio Ortiz,
  • María Matamala,
  • Bárbara Moreno,
  • Paula Pimentel

摘要

Background and Aims

Stone fruit trees (Prunus spp.) are cultivated in semi-arid to temperate climates which are areas prone to water deficit. Rootstocks contribute significantly to the development of more resilient trees; however, their role in determining drought tolerance across different fruit varieties remains poorly understood. This study assessed the influence of rootstocks over drought tolerance in multiple Prunus species and their potential interactions.

Methods

Experiments were conducted using 20-L container with two contrasting rootstocks (drought-tolerant and drought-sensitive), grafted with seven different Prunus species. The plants were subjected to a progressive water deficit until the transpiration nearly stopped. Parallel experiments using ungrafted rootstocks in rhizotrons were conducted to monitor root growth over time.

Results

Physiological and growth parameters were measured in rootstocks and scions. Although rootstocks did not significantly affect leaf water relations, they strongly influenced growth under water deficit across all grafted species. Grafted tree tolerance is related to rootstock tolerance and their interactions with scions. Rhizotron experiments in ungrafted plants evidenced higher root growth in the sensitive rootstock but a shallower distribution, potentially limiting its ability to access deeper soil water.

Conclusion

This study demonstrated that rootstocks and their interactions have a broad effect on drought response in grafted Prunus species, influencing both the onset of stress symptoms and tree growth. A candidate factor could be root growth pattern, although specific interactions among rootstocks and scions also play a significant role. Further research is required to elucidate the mechanisms that influence drought tolerance in grafted fruit trees.