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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
26/08/2022 |
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Data da última atualização: |
26/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GIRARDI, E. A.; AYRES, A. J.; GIROTTO, L. F.; PEÑA, L. |
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Afiliação: |
EDUARDO AUGUSTO GIRARDI, CNPMF; ANTONIO JULIANO AYRES, FUND FOR CITRUS PROTECTION; LUIZ FERNANDO GIROTTO; LEANDRO PEÑA, FUND FOR CITRUS PROTECTION. |
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Título: |
Tree growth and production of rainfed Valencia Sweet Orange grafted onto Trifoliate orange hybrid rootstocks under aw climate. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Agronomy, v.11, n.2533, 2021. |
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ISSN: |
2073-4395 |
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DOI: |
https://doi.org/10.3390/agronomy11122533 |
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Idioma: |
Inglês |
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Conteúdo: |
Brazil is the largest producer of sweet orange and its juice in the world. Extensive cultivated area is located under an Aw climate in the North?Northwest of the state of São Paulo and the Triângulo of Minas Gerais state, being subjected to severe drought events. Although 56% of the orchards are irrigated in these regions, there is a need for drought tolerant rootstocks as an alternative to traditional genotypes such as Rangpur lime and Volkamer lemon, which are susceptible to the endemic citrus sudden death disease (CSD). In this sense, the tree size and production of Valencia sweet orange grafted onto 23 rootstock genotypes were evaluated over a ten-year period in rainfed cultivation at 7.0 m × 3.0 m spacing. Most evaluated types resulted from the cross of Poncirus trifoliata with Citrus, but two interspecific hybrids of Citrus (Sunki mandarin × Rangpur lime hybrids), the Barnes trifoliate orange and a tetraploid selection of Swingle citrumelo were also tested. Tropical Sunki mandarin was used as the reference control. Those hybrids coming from the cross of Sunki × Flying Dragon induced large tree sizes to Valencia sweet orange as well as the other citrandarins, Tropical Sunki mandarin and the Sunki mandarin × Rangpur lime hybrids, whereas only the tetraploid Swingle citrumelo behaved as a dwarfing rootstock, decreasing the canopy volume by 77% compared to that induced by the most vigorous citrandarin 535. The citrandarins 543 and 602 and the citrange C38 induced the highest mean fruit production, 67.2 kg·tree−1, but they also caused pronounced alternate bearing and only the hybrid 543 led to a high production efficiency consistently. Graft incompatibility symptoms were not observed over the evaluation period, and the canopy shape of Valencia sweet orange was also influenced by the rootstocks tested. Two citrandarins and one citrange were selected as the most promising alternative rootstocks for Valencia sweet orange grown under an Aw climate, even though productivity would likely benefit from supplementary irrigation. MenosBrazil is the largest producer of sweet orange and its juice in the world. Extensive cultivated area is located under an Aw climate in the North?Northwest of the state of São Paulo and the Triângulo of Minas Gerais state, being subjected to severe drought events. Although 56% of the orchards are irrigated in these regions, there is a need for drought tolerant rootstocks as an alternative to traditional genotypes such as Rangpur lime and Volkamer lemon, which are susceptible to the endemic citrus sudden death disease (CSD). In this sense, the tree size and production of Valencia sweet orange grafted onto 23 rootstock genotypes were evaluated over a ten-year period in rainfed cultivation at 7.0 m × 3.0 m spacing. Most evaluated types resulted from the cross of Poncirus trifoliata with Citrus, but two interspecific hybrids of Citrus (Sunki mandarin × Rangpur lime hybrids), the Barnes trifoliate orange and a tetraploid selection of Swingle citrumelo were also tested. Tropical Sunki mandarin was used as the reference control. Those hybrids coming from the cross of Sunki × Flying Dragon induced large tree sizes to Valencia sweet orange as well as the other citrandarins, Tropical Sunki mandarin and the Sunki mandarin × Rangpur lime hybrids, whereas only the tetraploid Swingle citrumelo behaved as a dwarfing rootstock, decreasing the canopy volume by 77% compared to that induced by the most vigorous citrandarin 535. The citrandarins 543 and 602 and the citrange C38 induced the highe... Mostrar Tudo |
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Thesagro: |
Genótipo; Laranja. |
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Thesaurus Nal: |
Citrus; Drought tolerance; Fruit yield; Genotype; Poncirus; Trees. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02853naa a2200277 a 4500
001 2145811
005 2022-08-26
008 2021 bl uuuu u00u1 u #d
022 $a2073-4395
024 7 $ahttps://doi.org/10.3390/agronomy11122533$2DOI
100 1 $aGIRARDI, E. A.
245 $aTree growth and production of rainfed Valencia Sweet Orange grafted onto Trifoliate orange hybrid rootstocks under aw climate.$h[electronic resource]
260 $c2021
520 $aBrazil is the largest producer of sweet orange and its juice in the world. Extensive cultivated area is located under an Aw climate in the North?Northwest of the state of São Paulo and the Triângulo of Minas Gerais state, being subjected to severe drought events. Although 56% of the orchards are irrigated in these regions, there is a need for drought tolerant rootstocks as an alternative to traditional genotypes such as Rangpur lime and Volkamer lemon, which are susceptible to the endemic citrus sudden death disease (CSD). In this sense, the tree size and production of Valencia sweet orange grafted onto 23 rootstock genotypes were evaluated over a ten-year period in rainfed cultivation at 7.0 m × 3.0 m spacing. Most evaluated types resulted from the cross of Poncirus trifoliata with Citrus, but two interspecific hybrids of Citrus (Sunki mandarin × Rangpur lime hybrids), the Barnes trifoliate orange and a tetraploid selection of Swingle citrumelo were also tested. Tropical Sunki mandarin was used as the reference control. Those hybrids coming from the cross of Sunki × Flying Dragon induced large tree sizes to Valencia sweet orange as well as the other citrandarins, Tropical Sunki mandarin and the Sunki mandarin × Rangpur lime hybrids, whereas only the tetraploid Swingle citrumelo behaved as a dwarfing rootstock, decreasing the canopy volume by 77% compared to that induced by the most vigorous citrandarin 535. The citrandarins 543 and 602 and the citrange C38 induced the highest mean fruit production, 67.2 kg·tree−1, but they also caused pronounced alternate bearing and only the hybrid 543 led to a high production efficiency consistently. Graft incompatibility symptoms were not observed over the evaluation period, and the canopy shape of Valencia sweet orange was also influenced by the rootstocks tested. Two citrandarins and one citrange were selected as the most promising alternative rootstocks for Valencia sweet orange grown under an Aw climate, even though productivity would likely benefit from supplementary irrigation.
650 $aCitrus
650 $aDrought tolerance
650 $aFruit yield
650 $aGenotype
650 $aPoncirus
650 $aTrees
650 $aGenótipo
650 $aLaranja
700 1 $aAYRES, A. J.
700 1 $aGIROTTO, L. F.
700 1 $aPEÑA, L.
773 $tAgronomy$gv.11, n.2533, 2021.
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