Grafting guava on cattley guava resistant to Meloidogyne enterolobii

Robaina, Renata Rodrigues; Campos, Graziella Siqueira; Marinho, Cláudia Sales; Souza, Ricardo Moreira; Bremenkamp, Cintia Aparecida

doi:10.1590/0103-8478cr20131412

Cited by 15 publications

(15 citation statements)

References 7 publications

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“…Paluma in P. cattleianum and in P. friedrichsthalianum, with physiological compatibility in the field only observed with P. friedrichsthalianum. Biazatti (2013) and Robaina et al (2015) did not achieve compatibility of P. cattleianum with P. guajava cv. Pedro Sato and cv.…”

Section: Discussionmentioning

confidence: 98%

Relationship between Psidium species (Myrtaceae) by resistance gene analog markers: focus on nematode resistance

et al. 2017

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Guava (Psidium guajava L.) crop is severely affected by the nematode Meloidogyne enterolobii. Native Psidium species have been reported as sources of resistance against this nematode. Knowledge on the molecular relationship between Psidium species based on plant resistance gene analogs (RGA) can be useful in the genetic breeding of guava for resistance to M. enterolobii. In this study, RGA markers from conserved domains, and structural features of plant R genes, were employed to characterize Psidium species and establish genetic proximity, with a focus on nematode resistance. SSR markers were also applied owing to their neutral nature, thus differing from RGA markers. For this, species reported as sources of resistance to M. enterolobii, such as P. cattleianum and P. friedrichsthalianum, as well as species occurring in the Atlantic Rainforest and susceptible genotypes, were investigated. In 10 evaluated Psidium species, high interspecific genetic variability was verified through RGA and SSR markers, with intraspecific variation in P. guajava higher with SSR, as was expected. Resistant species were clustered by RGA markers, and differential amplicons among genotypes resistant and susceptible to M. enterolobii were identified. Knowledge on the molecular relationships between Psidium species constitutes useful information for breeding of the guava tree, providing direction for hybridization and material for rootstocks. Additionally, the genetic relationship between native species, which have been little studied, and P. guajava were estimated by RGAs, which were confirmed as important markers for genetic diversity related to pathogen resistance.

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Section: Discussionmentioning

confidence: 98%

Relationship between Psidium species (Myrtaceae) by resistance gene analog markers: focus on nematode resistance

et al. 2017

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“…Sources of resistance to M. enterolobii were also identified in genotypes of P. cattleianum by Carneiro et al (2007), Miranda et al (2012) and Biazatti et al (2016). However, in guava grafted onto P. cattleianum, graft incompatibility was seen one year after planting in the field (Robaina et al 2015).…”

Section: Introductionmentioning

confidence: 98%

Guava seedlings with rootstocks or interstocks and their reaction to salinity

Souza

Marinho

Silva³

et al. 2020

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The introduction of rootstocks for the guava has become necessary due to the advance of guava decline. Among them, Psidium spp. or their hybrids have been evaluated. In addition to disease resistance, tolerance to salinity must be evaluated in the new rootstocks. The aim of this study was to verify the effect of rootstocks and intergrafts on the mineral composition of Psidium spp. submitted to salt stress. The experiment was setup in a randomized block design, with the following treatments (scion/rootstock

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“…However, P. guajava genotypes resistant to guava decline are not available to date, although disease resistance has been reported in accessions of P. cattleyanum and P. guineense (Miranda, Souza, & Viana, 2011;Costa, Santos, & Castro, 2016). Moreover, the use of rootstocks for guava is unfeasible (Robaina, Campos, Marinho, Souza, & Bremenkanp, 2015). Therefore, for guava crops, plant breeding programs are important for developing cultivars or rootstocks that are genetically resistant and compatible for grafting (Carneiro, Cirotto, Quintanilha, Silva, & Carneiro, 2007;Almeida, Martins, & Santos, 2009;Gomes et al, 2011;Miranda et al, 2011;Miranda, de Souza, Gomes, Ferreira, & Almeida, 2012).…”

Section: Introductionmentioning

confidence: 99%

Analysis of the reproduction mode in Psidium spp. using the pollen:ovule ratio

et al. 2020

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This research aimed to explore the reproductive characteristics of three species of Psidium (P. guajava L., P. cattleyanum Sabine, and P. guineense Sw.) and estimate a probable reproduction strategy based on the pollen:ovule (P:O) methodology. The number of pollen grains per floral bud (NGPB), number of pollen grains per anther (NGPA), number of anthers per flower bud (NAB), number of ovules per flower bud (NOB), and the P:O ratio of each species were estimated. All species had a P:O ratio over 2,000 and were classified as xenogamous. P.guajava presented the highest values for all characteristics evaluated, with the NGPB at 3,777,519, the NOB at 584.50 and a P:O ratio of 6,462.82. Similarly, P. cattleyanum had a P:O ratio of 5,649.89 (NGPB 762,736 and NOB 135). However, P. guineense was considered facultative xenogamous, with P:O of 2,085.75, the NGPB at 741,484 and the NOB at 355.50. Thus, it was concluded that the studied species have a preference for allogamy and require many pollen grains to fertilize each ovule, demonstrating that the transfer of pollen to the stigma is not very specialized.

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Grafting guava on cattley guava resistant to Meloidogyne enterolobii

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Cited by 15 publications

References 7 publications

Relationship between Psidium species (Myrtaceae) by resistance gene analog markers: focus on nematode resistance

Relationship between Psidium species (Myrtaceae) by resistance gene analog markers: focus on nematode resistance

Guava seedlings with rootstocks or interstocks and their reaction to salinity

Analysis of the reproduction mode in Psidium spp. using the pollen:ovule ratio

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