Is hormonal analysis a predictive tool for grafting success in tomato?

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY Bragantia Pub Date : 2022-01-01 DOI:10.1590/1678-4499.20220016
R. H. Fernandes, D. Silva, F. T. Delazari, C. E. Vital, E. A. Lopes
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Abstract

: Anatomical, physiological, and biochemical analyses have been performed to predict graft compatibility. We analyzed if the concentrations of auxins, jasmonic acid, gibberellins, 1-aminocyclopropane-1-carboxylic acid, zeatin (cytokinin), salicylic acid, and abscisic acid could be used as predictors of compatibility between the rootstocks FOX1 and FOX4 (resistant to Fusarium wilt) and the scion of cherry tomatoes Sweet Heaven (SH). Self-grafted (SH/SH) and ungrafted SH plants (SH) were used as controls. Hormonal analyses were performed on leaves, at 20 and 70 days after grafting (DAG), and roots, at 20 DAG. No expressive concentrations of auxins, gibberellins, or jasmonic acid were detected. The concentrations of 1-aminocyclopropane-1-carboxylic acid, the immediate precursor of ethylene, and zeatin were altered at 20 DAG, but they stabilized at 70 DAG. Salicylic acid levels were reduced in the leaves of grafted plants at 70 DAG. The concentration of abscisic acid (ABA) in the leaves of SH grafted onto FOX1 was higher than in ungrafted and self-grafted plants at 70 DAG, suggesting some degree of incompatibility between these genotypes. The concentration of ABA in the combination FOX4/SH was similar to that in the self-grafted plants. Abscisic acid might be used as a reference phytohormone to predict graft compatibility among tomato genotypes.
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激素分析是番茄嫁接成功的预测工具吗?
解剖、生理和生化分析已用于预测移植物相容性。本文分析了生长素、茉莉酸、赤霉素、1-氨基环丙酸、玉米素(细胞分裂素)、水杨酸和脱落酸的浓度是否可以作为砧木FOX1和FOX4(抗枯萎病)与圣女果甜天(SH)接穗的亲和性的预测因子。以自嫁接(SH/SH)和未嫁接的SH植株(SH)为对照。在嫁接后20天和70天对叶片进行激素分析,在嫁接后20天对根系进行激素分析。未检测到生长素、赤霉素或茉莉酸的表达浓度。1-氨基环丙烷-1-羧酸(乙烯的直接前体)和玉米素的浓度在20 DAG时发生变化,但在70 DAG时稳定。嫁接植株叶片中水杨酸水平在70 DAG时降低。在70 DAG时,嫁接到FOX1上的SH叶片中脱落酸(ABA)浓度高于未嫁接和自嫁接植株,表明这两种基因型之间存在一定程度的不亲和性。FOX4/SH组合中ABA含量与自嫁接植株相近。脱落酸可作为预测番茄基因型间移植物相容性的参考激素。
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来源期刊
Bragantia
Bragantia AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
2.40
自引率
8.30%
发文量
33
审稿时长
4 weeks
期刊介绍: Bragantia é uma revista de ciências agronômicas editada pelo Instituto Agronômico da Agência Paulista de Tecnologia dos Agronegócios, da Secretaria de Agricultura e Abastecimento do Estado de São Paulo, com o objetivo de publicar trabalhos científicos originais que contribuam para o desenvolvimento das ciências agronômicas. A revista é publicada desde 1941, tornando-se semestral em 1984, quadrimestral em 2001 e trimestral em 2005. É filiada à Associação Brasileira de Editores Científicos (ABEC).
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