Effects of grafting with wild tomato (Solanum pimpinellifolium and Solanum habrochaites) rootstocks on growth and leaf mineral accumulation in salt stress

IF 2.4 3区 农林科学 Q1 Agricultural and Biological Sciences
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Abstract

The positive response of grafting by tolerant rootstocks or scion-stock interactions on yield and fruit traits of tomatoes under saline conditions is attributed to several physiological and biochemical changes. In this study, we investigated some tolerance mechanisms by which grafting on wild rootstocks in tomatoes can prevent or minimize the effects of salt stress in plants under hydroponics conditions. Two tomato cultivars H2274 and Galaxy were grafted onto three S. pimpinellifolium, three S. habrochaites, S. lycopersicum L. × S. pimpinellifolium and S. lycopersicum L. × S. Habrochaites hybrid tomato genotypes. Plants were grown in hydroponic culture at two electrical conductivity (EC) levels (control at 1.5 dSm-1 and salt at 8.0 dSm-1). Salt stress led to a significant reduction in biomass growths of both grafted and nongrafted tomatoes. However, the plants that are least affected by salt stress are those grafted on wild tomato rootstocks. Leaf nutrient contents were significantly affected by rootstocks under both control and salt stress conditions. In this study, under saline conditions, plants grafted on wild rootstocks had higher N, P, K, Ca, Mg, S, Mn, Fe, Zn and B contents in leaf tissues and lower Na and Cl contents than ungrafted plants. Biochemical and physiological results revealed that S. pimpinellifolium and S. habrochaites have inherited salt tolerance from their genetic background. These wild tomato genotypes can be used as rootstocks in tomato breeding programs to develop salt-tolerant tomatoes or in grafting techniques under saline irrigation conditions.

与野生番茄(Solanum pimpinellifolium 和 Solanum habrochaites)砧木嫁接对盐胁迫下生长和叶片矿物质积累的影响
摘要 在盐碱条件下,耐盐砧木嫁接或接穗-砧木互作对番茄产量和果实性状的积极影响可归因于几种生理和生化变化。在本研究中,我们研究了在水培条件下,番茄野生砧木嫁接可防止或最大程度减少植物盐胁迫影响的一些耐受机制。将两个番茄栽培品种 H2274 和 Galaxy 嫁接到三个 S. pimpinellifolium、三个 S. habrochaites、S. lycopersicum L. × S. pimpinellifolium 和 S. lycopersicum L. × S. Habrochaites 杂交番茄基因型上。植物在两种电导率(EC)水平(对照为 1.5 dSm-1,盐为 8.0 dSm-1)下进行水培。盐胁迫导致嫁接番茄和非嫁接番茄的生物量增长显著下降。然而,受盐胁迫影响最小的植株是嫁接在野生番茄砧木上的植株。在对照和盐胁迫条件下,砧木对叶片养分含量的影响都很大。与未嫁接的植株相比,在盐胁迫条件下,嫁接在野生砧木上的植株叶片组织中 N、P、K、Ca、Mg、S、Mn、Fe、Zn 和 B 的含量较高,而 Na 和 Cl 的含量较低。生化和生理结果表明,S. pimpinellifolium 和 S. habrochaites 从其遗传背景中继承了耐盐性。这些野生番茄基因型可用作番茄育种计划的砧木,以培育耐盐番茄,或用于盐碱灌溉条件下的嫁接技术。
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来源期刊
Horticulture Environment and Biotechnology
Horticulture Environment and Biotechnology Agricultural and Biological Sciences-Horticulture
CiteScore
4.30
自引率
4.20%
发文量
0
审稿时长
6 months
期刊介绍: Horticulture, Environment, and Biotechnology (HEB) is the official journal of the Korean Society for Horticultural Science, was launched in 1965 as the "Journal of Korean Society for Horticultural Science". HEB is an international journal, published in English, bimonthly on the last day of even number months, and indexed in Biosys Preview, SCIE, and CABI. The journal is devoted for the publication of original research papers and review articles related to vegetables, fruits, ornamental and herbal plants, and covers all aspects of physiology, molecular biology, biotechnology, protected cultivation, postharvest technology, and research in plants related to environment.
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