دورية أكاديمية
Preservation of moderately resistant or tolerant genotypes: a strategy to overcome guava decline
| العنوان: | Preservation of moderately resistant or tolerant genotypes: a strategy to overcome guava decline |
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| المؤلفون: | Maurício Moisés Pereira da Silva, Manoel Abilio de Queiróz, Milena dos Santos Coutinho, Patrícia Gomes de Oliveira |
| المصدر: | Ciência Rural, Vol 54, Iss 10 (2024) |
| بيانات النشر: | Universidade Federal de Santa Maria, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Agriculture LCC:Agriculture (General) |
| مصطلحات موضوعية: | genetic variability, cv. Paluma, reproduction factor, minigrafting, Meloidogyne enterolobii, Agriculture, Agriculture (General), S1-972 |
| الوصف: | ABSTRACT: Native to the tropical Americas, guava (Psidium guajava L.) is an important crop in Brazil. However, the emergence of so-called guava decline, a complex disease resulting from root parasitism by the root-knot nematode (Meloidogyne enterolobii Yang & Eisenback) in association with opportunistic fungi, has decimated guava orchards across Brazil and in other countries. In the present study, seminiferous guava accessions were vegetatively propagated by minigrafting and their genotypes preserved for resistance reassessment in clones to confirm or not host plant reactions. The results indicated a highly virulent parasite, high host suitability of the P. guajava species, and widely varying reactions among plants of the same genotype and between different genotypes, demonstrating that the strategy of preserving the germplasm and reassessing reactions in clones may be important in identifying and selecting germplasms with a degree of resistance to M. enterolobii. The progeny of cv. Paluma P02R5R2 obtained the lowest average parasite reproduction factor (RF = 22.11) among the genotypes evaluated and was; therefore; classified as moderately resistant and preserved for future research. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Portuguese |
| تدمد: | 1678-4596 0103-8478 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782024001000152&lng=en&tlng=en; http://www.scielo.br/pdf/cr/v54n10/1678-4596-cr-54-10-e20220500.pdf; https://doaj.org/toc/1678-4596 |
| DOI: | 10.1590/0103-8478cr20220500 |
| URL الوصول: | https://doaj.org/article/d5c346cb3c1d46ffa8613195d8b91e7c |
| رقم الأكسشن: | edsdoj.5c346cb3c1d46ffa8613195d8b91e7c |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16784596 01038478 |
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| DOI: | 10.1590/0103-8478cr20220500 |