黃亮亮 沙潔
摘要:采用不同濃度NaCl脅迫處理,對10個加工番茄品種進行種子發芽試驗。結果表明,在低濃度NaCl脅迫下,對番茄種子萌發有一定的促進作用,而濃度過高則明顯抑制種子萌發。當NaCl濃度為50 mmol/L時,石番15號、茄番0738、紅雜33、IVF6172表現出較強的耐鹽性。隨著NaCl濃度的加大,發芽率、發芽勢降低;當NaCl濃度為150 mmo/l時,發芽率明顯降低,幾乎不能發芽。綜合各因素,石番15號、茄番0738、紅雜33、IVF6172表現出較強的耐鹽性,可作為耐鹽堿品種進一步試驗。
關鍵詞:NaCl脅迫;番茄種子;發芽率;發芽勢;耐鹽性
中圖分類號:S641.2 文獻標志碼:A 文章編號:1001-1463(2018)11-0046-04
doi:10.3969/j.issn.1001-1463.2018.11.013
Effects of 5 Preservatives on Sensory Quality during Cold Storage of Peeled Green Walnut Fruit
CHEN Bai 1,2, XIE Minhua 1,2, WU Xiaohua 1,2, WANG Xuexi 1,2, JING Xinxin 3, YU Jiang 3
(1. Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou Gansu 730070, China; 2. Engineering and Technology Research Center for Agricultural Product Storage and Processing of Gansu Province, Lanzhou Gansu 730070, China; 3. College of Horticulture, Gansu Agricultural University, Lanzhou Gansu 730070, China)
Abstract:With Qingxiang walnut as materials, effects of different preservatives processing (prochloraz, imazalil, grape preservative, CLO2 and 1-MCP) on the sensory quality during cold storage of peeled green walnut fruit were observed. The results show that the grape preservative had the best inhibition effect on the moldy and stickiness of walnut after storage at -2~0 ℃ for 90 days, the preservation effect of the color of walnut shell and seed coat of the walnut is better than that of other treatments. There is no significant difference in the browning index, the difficulty of the peeling and the preservation of the kernel flavor. Compared with other preservatives, grape preservative can effectively kept the sensory quality of fresh walnut during the storage period.
Key words:Green walnut fruit;Preservatives;Cold storage;Sensory quality
番茄是一年草本植物,具有喜溫、喜光、怕濕、怕熱、耐肥及半耐旱的生物學特征[1 - 2 ]。其根系比較發達,適宜在土層深厚、排水良好、富含有機質的肥沃土壤栽培[1 ]。近30年來,番茄為我國重要的蔬菜之一[2 - 3 ],在我國露地栽培和保護地栽培中位居首位,已實現了周年生產、四季均衡供應市場[1 ]。加工番茄目前在國內栽培廣泛,但其移栽成活率嚴重依賴于良好的土壤水分、鹽分條件,不同作物或同一種作物不同品種間的耐鹽性差異對加工番茄影響顯著[4 - 5 ]。且近年來農戶盲目或過量的施用化肥,使得土壤的次生鹽漬化程度進一步加重,嚴重影響了加工番茄的產量和品質。耐鹽加工番茄品種的選育難度較大,而通過挖掘作物種質資源本身的耐鹽能力,篩選和培育出耐鹽品種是開發利用鹽漬土壤最為經濟有效的途徑[6 ]。我們于2016年對不同的番茄品種在不同濃度的鹽脅迫下的萌發和幼根生長表現進行了比較研究,以期為耐鹽番茄品種的鑒定、篩選以及以后的耐鹽育種工作及設施耐鹽栽培提供參考依據。……