Grafting is a technique that provides a substantial way to enhance nutrient utilization thereby improves plant growth and yield quality. Although it is commonly practised in horticultural crops, the impact of scion-rootstock interaction on nutrient distribution is still unclear. Here, 'Newhall' navel orange plants grafted on Trifoliate orange (T) as the original rootstock were inarched with trifoliate orange (N/Tt combination) or carrizo citrange (N/Tc combination) rootstock seedlings. The experimental plants were treated with isotope B solution for 7 weeks to investigate the effect of different inarched rootstocks on B distribution and translocation by using a two-root system. From this study, the original rootstock played a more dominant role in B distribution to scion tissues than the inarching rootstock either in N/Tt or N/Tc combination. From inarched combinations, the carrizo citrange in the N/Tc combination had a higher ability to distribute B to new leaves, new twigs and old twigs than trifoliate orange in the N/Tt combination. However, the original rootstock of N/Tt distributed more B to scion tissues than N/Tc and the B concentration in old leaves and new leaves of N/Tt plants was significantly higher than that of N/Tc plants. These results suggest that scion B status is influenced by the B distribution of two inarching rootstocks in an inarching plant, as well as the affinity between the inarching rootstock and grafted plant. In addition, by either adding B to the inarching rootstock or original rootstock, we could detect B in the other rootstock root in both N/Tt and N/Tc combinations. The results further suggest that B can translocate from rootstock to leaves and then, re-translocate from scion to rootstock through the cycling of B transportation.
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http://dx.doi.org/10.1016/j.plaphy.2021.07.025 | DOI Listing |
Plant Dis
November 2024
Elizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries and Regional Development, Menangle, New South Wales, Australia;
Ying Yong Sheng Tai Xue Bao
July 2024
Flower Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China.
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December 2023
Centre de coopération internationale en recherche agronomique pour le développement Centre de coopération internationale en recherche agronomique pour le développement (CIRAD), Amélioration Génétique et Adaptation des Plantes Méditerranéennes et Tropicales (UMR AGAP) Institut, Montpellier, France.
Citrus polyploidy is associated with a wide range of morphological, genetic, and physiological changes that are often advantageous for breeding. Citrus triploid hybrids are very interesting as new seedless varieties. However, tetraploid rootstocks promote adaptation to different abiotic stresses and promote resilience.
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October 2023
Institute of Plant Protection, Hainan Academy of Agricultural Sciences (Research Center of Quality Safety and Standards for Agro-Products, Hainan Academy of Agricultural Sciences), Haikou, Hainan, China.
Introduction: Wilt is a soil-borne disease caused by that has become a serious threat to wax gourd production. Disease-resistant graft wax gourds are an effective treatment for wilt. However, there are few reports on the defense mechanism of graft wax gourd against wilt diseases.
View Article and Find Full Text PDFPlant Dis
October 2023
INRAE, 27057, UMR 1332 Biologie du Fruit et Pathologie, INRA - Université de Bordeaux, Paris, Aquitaine, France;
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