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Yu M, Li S, Zhan Y, Huang Z, Lv J, Liu Y, Quan X, Xiong J, Qin D, Huo J, Zhu C. Evaluation of the Harvest Dates for Three Major Cultivars of Blue Honeysuckle ( Lonicera caerulea L.) in China. PLANTS (BASEL, SWITZERLAND) 2023; 12:3758. [PMID: 37960114 PMCID: PMC10649999 DOI: 10.3390/plants12213758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/20/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
Blue honeysuckle (Lonicera caerulea L.) is an emerging fruit crop; however, determining its proper harvest time in commercial cultivation remains challenging due to its rapid fruit development characteristics. In this study, we investigated 17 agronomic traits of three blue honeysuckle cultivars harvested on 5 successive dates within their respective harvest windows. 'Lanjingling', 'Wulan', and 'Berel' showed solid-acid ratios (SS:TA) ranging from 10.00 to 16.01, 8.13 to 10.23, and 5.77 to 7.11, respectively; anthocyanin contents ranged from 233.85 to 276.83 mg/100 g, 236.38 to 312.23 mg/100 g, and 235.71 to 334.98 mg/100 g, respectively; vitamin C contents ranged from 88.43 to 99.68 mg/100 g, 108.13 to 191.23 mg/100 g, and 89.71 to 120.40 mg/100 g, respectively; phenolic contents ranged from 25.22 to 37.59 mg/g, 25.40 to 36.52 mg/g, and 37.66 to 50.00 mg/g, respectively. The results revealed the SS:TA value consistently increased with delayed harvesting and were significantly negatively correlated with fruit firmness, total acidity, shelf life, and respiration intensity, suggesting it is an ideal maturity indicator for blue honeysuckle berries. The factor analysis suggests that the suitable harvest date for 'Lanjingling' could be either 47 days after flowering (DAF) with an SS:TA value of approximately 10.0, characterized by high firmness, extended shelf life, and elevated levels of anthocyanins and phenolics; or 67 DAF (SS:TA ≈ 16.0), characterized by high vitamin C content and sweetness, and larger size and weight. For 'Wulan', it suggests the suitable harvest date is either 54 DAF (SS:TA ≈ 9.0), yielding fruit with high levels of anthocyanins and vitamin C; or 62 DAF (SS:TA > 10.0), yielding fruit with high sweetness and large size and weight. For 'Berel', it is suggested to be either 52 DAF (SS:TA ≈ 6.5), resulting in fruit with high levels of anthocyanins and vitamin C; or 62 DAF (SS:TA > 7.0), resulting in balanced levels of the fruit quality traits.
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Affiliation(s)
- Min Yu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
- National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin 150030, China
| | - Songlin Li
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Ying Zhan
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
- Institute of Agricultural Science and Technology, Bureau of Agriculture and Rural Affairs of Xiaochang County, Xiaogan 100125, China
| | - Zhiqiang Huang
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Jinjiao Lv
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Yu Liu
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Xin Quan
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Jinyu Xiong
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Dong Qin
- National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin 150030, China
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Junwei Huo
- National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin 150030, China
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Chenqiao Zhu
- National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin 150030, China
- College of Horticulture & Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin 150030, China
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New Mater-Bi, Biodegradable Mulching Film for Strawberry (Fragaria × Ananassa Duch.): Effects on Film Duration, Crop Yields, Qualitative, and Nutraceutical Traits of Fruits. PLANTS 2022; 11:plants11131726. [PMID: 35807678 PMCID: PMC9269271 DOI: 10.3390/plants11131726] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/15/2022] [Accepted: 06/24/2022] [Indexed: 11/26/2022]
Abstract
In the main strawberry areas of Southern Italy, cultivation is carried out by transplanting plants on raised beds (30–40 cm from ground level), mulched with black polyethylene (PE). This technique has becoming increasingly expensive due to the growing prices of plastic mulches, the cost to remove them at the end of crop cycle, and the difficulty to dispose of black, dirty plastic films. The main objective of this research was the replacement of PE mulch with a new biodegradable mulching film Mater-Bi®-based (Novamont), characterized by an increased permanence in the field designed for long crop life. In 2021, two Mater-Bi-based, black, 18 μm thick mulching films were tested under tunnel: N5 as innovative film and N18 as commercial standard film. Black PE film, 50 μm thick was the control. Strawberry cultivars ‘Sabrina’ and ‘Elide’ were cropped on the three mulching films according to a split plot design with four replications. Harvests lasted from March to June 2021. Cvs Sabrina and Elide yielded around 40 t ha−1, while the mean effect of mulching films did not point out differences between the biodegradable mulches and PE. In 4 out of 12 harvests we analyzed samples of fruits to assess the influence of mulches on the contents of °Brix, polyphenols, antioxidant activity, ascorbic acid, flavonoids, and anthocyanins. On average, °Brix was clearly improved in fruits on PE compared to biodegradable films, while all the other qualitative traits resulted in being more dependent on the cultivars and times of sampling effects. Overall, biodegradable mulches are a viable alternative to PE mulch, and the innovative N5 film appeared promising for the enhancement of durability of soil coverage in a long-lasting cycle.
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