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Dung CD, Trueman SJ, Wallace HM, Farrar MB, Gama T, Tahmasbian I, Bai SH. Hyperspectral imaging for estimating leaf, flower, and fruit macronutrient concentrations and predicting strawberry yields. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:114166-114182. [PMID: 37858016 PMCID: PMC10663281 DOI: 10.1007/s11356-023-30344-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 10/04/2023] [Indexed: 10/21/2023]
Abstract
Managing the nutritional status of strawberry plants is critical for optimizing yield. This study evaluated the potential of hyperspectral imaging (400-1,000 nm) to estimate nitrogen (N), phosphorus (P), potassium (K), and calcium (Ca) concentrations in strawberry leaves, flowers, unripe fruit, and ripe fruit and to predict plant yield. Partial least squares regression (PLSR) models were developed to estimate nutrient concentrations. The determination coefficient of prediction (R2P) and ratio of performance to deviation (RPD) were used to evaluate prediction accuracy, which often proved to be greater for leaves, flowers, and unripe fruit than for ripe fruit. The prediction accuracies for N concentration were R2P = 0.64, 0.60, 0.81, and 0.30, and RPD = 1.64, 1.59, 2.64, and 1.31, for leaves, flowers, unripe fruit, and ripe fruit, respectively. Prediction accuracies for Ca concentrations were R2P = 0.70, 0.62, 0.61, and 0.03, and RPD = 1.77, 1.63, 1.60, and 1.15, for the same respective plant parts. Yield and fruit mass only had significant linear relationships with the Difference Vegetation Index (R2 = 0.256 and 0.266, respectively) among the eleven vegetation indices tested. Hyperspectral imaging showed potential for estimating nutrient status in strawberry crops. This technology will assist growers to make rapid nutrient-management decisions, allowing for optimal yield and quality.
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Affiliation(s)
- Cao Dinh Dung
- Centre for Bioinnovation, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD, 4556, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD, 4556, Australia
- Potato, Vegetable and Flower Research Center - Institute of Agricultural Science for Southern Vietnam, Thai Phien Village, Ward 12, Da Lat, Lam Dong, Vietnam
| | - Stephen J Trueman
- Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD, 4111, Australia
| | - Helen M Wallace
- Centre for Bioinnovation, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD, 4556, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD, 4556, Australia
- Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD, 4111, Australia
| | - Michael B Farrar
- Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD, 4111, Australia
| | - Tsvakai Gama
- Centre for Bioinnovation, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD, 4556, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, QLD, 4556, Australia
| | - Iman Tahmasbian
- Department of Agriculture and Fisheries, Queensland Government, Toowoomba, QLD, 4350, Australia
| | - Shahla Hosseini Bai
- Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD, 4111, Australia.
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Richards TE, Kämper W, Trueman SJ, Wallace HM, Ogbourne SM, Brooks PR, Nichols J, Hosseini Bai S. Relationships between Nut Size, Kernel Quality, Nutritional Composition and Levels of Outcrossing in Three Macadamia Cultivars. PLANTS (BASEL, SWITZERLAND) 2020; 9:E228. [PMID: 32053871 PMCID: PMC7076547 DOI: 10.3390/plants9020228] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 02/06/2020] [Accepted: 02/10/2020] [Indexed: 12/13/2022]
Abstract
Tree nuts play an important role in healthy diets, but their economic value and nutritional quality may be affected by their size and paternity. We assessed relationships between nut size and kernel recovery, the incidence of whole kernels, fatty acid composition and mineral nutrient concentrations in three macadamia cultivars, "Daddow", "816" and "A4". We determined to what extent differences in nut size and quality were the result of different levels of cross- or self-paternity. Small nuts of all cultivars had lower kernel recovery than large nuts, and small nuts provided lower incidence of whole kernels in "Daddow" and "A4". Small kernels had a lower relative abundance of the saturated fatty acid, palmitic acid, in all cultivars and higher relative abundance of the unsaturated fatty acid, oleic acid, in "Daddow" and "A4". Small kernels had higher concentrations of many essential nutrients such as nitrogen and calcium, although potassium concentrations were lower in small kernels. Most nuts arose from cross-pollination. Therefore, nut size and kernel quality were not related to different levels of cross- and self-paternity. Identified cross-paternity was 88%, 78% and 90%, and identified self-paternity was 3%, 2% and 0%, for "Daddow", "816" and "A4", respectively. Small macadamia kernels are at least as nutritious as large macadamia kernels. High levels of cross-paternity confirmed that many macadamia cultivars are predominantly outcrossing. Macadamia growers may need to closely inter-plant cultivars and manage beehives to maximise cross-pollination.
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Affiliation(s)
- Tarran E. Richards
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia; (T.E.R.); (W.K.); (H.M.W.); (S.M.O.); (P.R.B.); (J.N.); (S.H.B.)
| | - Wiebke Kämper
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia; (T.E.R.); (W.K.); (H.M.W.); (S.M.O.); (P.R.B.); (J.N.); (S.H.B.)
- Department of Animal Ecology, Evolution and Biodiversity, Ruhr-University Bochum, 44780 Bochum, Germany
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD 4111, Australia
| | - Stephen J. Trueman
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia; (T.E.R.); (W.K.); (H.M.W.); (S.M.O.); (P.R.B.); (J.N.); (S.H.B.)
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD 4111, Australia
| | - Helen M. Wallace
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia; (T.E.R.); (W.K.); (H.M.W.); (S.M.O.); (P.R.B.); (J.N.); (S.H.B.)
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD 4111, Australia
| | - Steven M. Ogbourne
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia; (T.E.R.); (W.K.); (H.M.W.); (S.M.O.); (P.R.B.); (J.N.); (S.H.B.)
| | - Peter R. Brooks
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia; (T.E.R.); (W.K.); (H.M.W.); (S.M.O.); (P.R.B.); (J.N.); (S.H.B.)
| | - Joel Nichols
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia; (T.E.R.); (W.K.); (H.M.W.); (S.M.O.); (P.R.B.); (J.N.); (S.H.B.)
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD 4111, Australia
| | - Shahla Hosseini Bai
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia; (T.E.R.); (W.K.); (H.M.W.); (S.M.O.); (P.R.B.); (J.N.); (S.H.B.)
- Environmental Futures Research Institute, School of Environment and Science, Griffith University, Nathan, Brisbane, QLD 4111, Australia
- School of Health, Medical and Applied Sciences, CQ University, Bundaberg, QLD 4670, Australia
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