不同濃度與分子量幾丁聚醣對‘豐香’草莓生產之影響

草莓是經濟價值高的作物之一，但栽培不易，容易受環境與病蟲害等影響。幾丁聚醣為天然高分子聚合物具有生物活性等多種特性，可廣泛應用於生醫、食品、生技、農業等領域，促進植物生長與提升作物產量。為評估幾丁聚醣應用於草莓生產，以高低二種不同分子量與20 mg L^(-1)、100 mg L^(-1)濃度每週噴施‘豐香’草莓4週，再移至溫室栽培8週後，結果顯示無論施用濃度高低，低分子量幾丁聚醣能促進草莓的營養生長。20 mg L^(-1)低分子量幾丁聚醣能提高‘豐香’草莓果實的重量與糖酸比；20 mg L^(-1)高分子量幾丁聚醣能提高果實的維生素C含量。幾丁聚醣能促進‘豐香’草莓生長與果實品質，以20 mg L^(-1)低濃度低分子量幾丁聚醣效果較佳。

關鍵字

幾丁聚醣；濃度；分子量；草莓；生產

並列摘要

Strawberry is a high-value crop in Taiwan. It's hard to cultivate results from many insects, diseases, and abiotic stress problems. Chitosan is a natural high polymer material, numerous studies have demonstrated that chitosan and its derivatives have various biological activities. Also, it has been proposed for diverse applications in biomedical, food, biotechnology, and agricultural fields. The application of chitosan promotes plant growth and yield. In order to examine the effects of different concentrations and molecular weight of chitosan on the growth and production of strawberry 'Toyonoka'. Strawberry plants were applied two concentrations (20 mg L^(-1), 100 mg L^(-1)) and two molecular weights (H, L). Different concentrations and molecular weight of chitosan were applied once a week for 4 weeks, then plants were transferred to the greenhouse and grown for 8 weeks. Results showed low molecular weight chitosan can promote strawberry vegetative growth whatever high and low concentration. Using 20 mg L^(-1) low molecular weight chitosan can increase 'Toyonoka' strawberry fruit weight and TSS/TA ratio. On the other hand, using 20 mg L^(-1) high molecular weight chitosan can increase fruit vitamin C content. We provide evidence that 20 mg L^(-1) low molecular weight chitosan application can promote plant growth and also increase fruit weight and quality.

並列關鍵字

chitosan ； concentration ； molecular weight ； strawberry ； production

國際替代計量

不同濃度與分子量幾丁聚醣對‘豐香’草莓生產之影響

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