Dwarf‐cashew resistance to whitefly (<i>Aleurodicus cocois</i>) linked to morphological and histochemical characteristics of leaves

Goiana, Elaine S. S.; Dias-Pini, Nívia da Silva; Muniz, Celli Rodrigues; Soares, Arlete A.; Alves, James Castro; Vidal‐Neto, Francisco C.; Silva, Cherre S. Bezerra Da

doi:10.1002/ps.5531

Cited by 9 publications

(3 citation statements)

References 37 publications

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“…Holland and Fahrig (2000) and Mignon et al (2002) have shown that field borders can have a significant influence on insect abundance and diversity. There could also be the effect of the cashew tree's induced defences (Boone et al 2011;Goiana et al 2019), as it was observed that most of the cashew trees that were attacked in the first year of observation were no longer attacked in the second year. Agboton et al (2017) had made the same observation.…”

Section: Discussionmentioning

confidence: 99%

Analysis of cashew tree density and its effect on damage caused by the stem borer, Apate terebrans (Coleoptera: Bostrichidae), in Côte d'Ivoire (West Africa)

ALIKO,

N’GUETTIA,

KOFFI

et al. 2024

Preprint

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The stem borer Apate terebrans is a pest of tropical regions that considerably limits the production of cashew tree, an important crop for climate change adaptation. This study assessed the effects of cashew tree density on the damage of A. terebrans, for the effective and sustainable management of this insect pest. The density was characterised by the quadrat method in 10 orchards in the localities of Bondoukou and Bouna, in the north-east of Côte d'Ivoire. Based on systematic sampling, monthly counts of A. terebrans infestations were conducted on 1924 cashew trees from July 2018 to June 2020. Temperature and hygrometry were recorded over this period. In Bondoukou, an average density of 515 ± 235.5 cashew trees/ha was recorded, with a coefficient of variation (CV) of 58.64%. This density was significantly higher than that of Bouna (235 ± 39.6 cashew trees/ha), which showed low heterogeneity (CV = 29.44%). Temperature was higher in Bouna than in Bondoukou and vice versa for hygrometry. Linear regression showed a moderate and significant relationship between cashew tree density and damage, mainly in the locality with high spatial heterogeneity (i.e. Bondoukou). Thus, a high density reduces damage. The Morisita and Blackman indices indicated a distribution of damage that tended to be aggregated in Bondoukou and random in Bouna. By establishing the implication of cashew tree density in the control of A. terebrans damage, this work provides perspectives for the landscaping of cashew orchards, with a view to natural control of this pest.

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Section: Discussionmentioning

confidence: 99%

Analysis of cashew tree density and its effect on damage caused by the stem borer, Apate terebrans (Coleoptera: Bostrichidae), in Côte d'Ivoire (West Africa)

ALIKO,

N’GUETTIA,

KOFFI

et al. 2024

Preprint

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“…Plants of the F 2 generation had bigger and thicker leaves and significantly thicker layers of palisade and spongy mesophyll than triploids of the F 1 generation and parental lines of B. oleracea and B. napus, whereas FC320 F 2 had a compact mesophyll structure with small intercellular spaces. The leaf surface and leaf morphological characteristics may affect their resistance to infestation by insect herbivores [51][52][53]. Marasek-Ciolakowska et al [53] showed that reduced infestation by the cabbage whitefly (Aleyrodes proletella) on leaves of resistant cultivars of kale and savoy cabbage was related to the structure of the epidermis, thickness of the lamina, and compactness of the mesophyll.…”

Section: Discussionmentioning

confidence: 99%

Effect of Meiotic Polyploidisation on Selected Morphological and Anatomical Traits in Interspecific Hybrids of Brassica oleracea × B. napus

et al. 2021

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In Brassica, interspecific hybridisation plays an important role in the formation of allopolyploid cultivars. In this study, the ploidy of F1 and F2 generations resulting from interspecific hybridisation between B. oleracea inbred lines of head cabbage (B. oleracea L. var. capitata) (2n = 18) and kale (B. oleracea L. var. acephala) (2n = 18) with inbred lines of rapeseed (B. napus L.) (2n = 38) was examined by flow cytometry analysis and chromosome observation. Furthermore, the effect of meiotic polyploidisation on selected phenotypic and anatomical traits was assessed. The F1 hybrids of head cabbage × rapeseed (S3) and kale × rapeseed crosses (S20) were allotriploids with 2n = 28 chromosomes, and nuclear DNA amounts of 1.97 (S3) and 1.99 pg (S20). These values were intermediate between B. oleracea and B. napus. In interspecific hybrids of the F2 generation, which were derived after self-pollination of F1 hybrids (FS3, FS20) or by open crosses between F1 generation hybrids (FC320, FC230), the chromosome numbers were similar 2n = 56 or 2n = 55, whereas the genome sizes varied between 3.81 (FS20) and 3.95 pg 2C (FC230). Allohexaploid F2 hybrids had many superior agronomic traits compared to parental B. napus and B. oleracea lines and triploid F1 hybrids. In the generative stage, they were characterised by larger flowers and flower elements, such as anthers and lateral nectaries. F2 hybrids were male and female fertile. The pollen viability of F2 hybrids was comparable to parental genotypes and varied from 75.38% (FS3) to 88.24% (FC320), whereas in triploids of F1 hybrids only 6.76% (S3) and 13.46% (S20) of pollen grains were fertile. Interspecific hybrids of the F2 generation derived by open crosses between plants of the F1 generation (FC320, FC230) had a better ability to set seed than F2 hybrids generated from the self-pollination of F1 hybrids. In the vegetative stage, F2 plants had bigger and thicker leaves, larger stomata, and significantly thicker layers of palisade and spongy mesophyll than triploids of the F1 generation and parental lines of B. oleracea and B. napus. The allohexaploid F2 hybrids analysed in this study can be used as innovative germplasm resources for further breeding new vegetable Brassica crops at the hexaploid level.

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“…Biochemical factors such as allelochemicals, proteins, and several metabolites are often associated with the morphological structures of species like trichomes, mesoderm, and parenchyma, among many other [4][5][6]. The introgression of genes from wild species has been shown to be the main alternative for tomato breeding programs, as there are several records of resistance in relation to arthropod pest species in this crop [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Tomato Breeding for Sustainable Crop Systems: High Levels of Zingiberene Providing Resistance to Multiple Arthropods

et al. 2020

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In sustainable cropping systems, the management of herbivorous arthropods is a challenge for the high performance of the tomato crop. One way to reduce the damage caused by these pests is the use of resistant cultivars within a sustainable integrated management system. The host selection of Tetranychus urticae, Bemisia tabaci, and Tuta absoluta was evaluated, characterizing their preference among the tomato genotypes RVTZ2011-79-503-143, RVTZ2011-79-335-164, RVTZ2011-79-185-250 (high zingiberene content—HZC), and RVTZ2011-79-117-273 (low zingiberene content—LZC). Such genotypes were selected in the F2BC2 generation (the F2 generation of the 2th backcross towards Solanum lycopersicum after the inicial interspecific cross S. lycopersicum × S. habrochaites var. hirsutum), resulting from crossing Solanum habrochaites var. hirsutum PI-127826 (HZC and resistant to mites) and the commercial cv. Redenção (S. lycopersicum) (LZC and susceptible to mites). In choice and no-choice bioassays by T. urticae, and in choice bioassays by B. tabaci and T. absoluta, arthropods preferred to stay and oviposit in an LZC genotype. In contrast, genotypes with HZC showed repellency to pests and induced a non-preference for oviposition. The F2BC2 genotypes selected for HZC are considered sources of resistance genes to these pests for tomato breeding programs, and therefore have excellent potential for sustainable cropping systems. These results represent an advance in obtaining tomato genetic materials which can be used in sustainable production systems with less loss from pests.

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Dwarf‐cashew resistance to whitefly (Aleurodicus cocois) linked to morphological and histochemical characteristics of leaves

Cited by 9 publications

References 37 publications

Analysis of cashew tree density and its effect on damage caused by the stem borer, Apate terebrans (Coleoptera: Bostrichidae), in Côte d'Ivoire (West Africa)

Analysis of cashew tree density and its effect on damage caused by the stem borer, Apate terebrans (Coleoptera: Bostrichidae), in Côte d'Ivoire (West Africa)

Effect of Meiotic Polyploidisation on Selected Morphological and Anatomical Traits in Interspecific Hybrids of Brassica oleracea × B. napus

Tomato Breeding for Sustainable Crop Systems: High Levels of Zingiberene Providing Resistance to Multiple Arthropods

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