Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/89193
標題: 植物生長調節劑對長實金柑(Fortunella margarita Swingle)無子化及果實品質之影響
Effects of Plant Growth Regulator on Seedlessness and Fruit Quality in Oval Kumquat (Fortunella margarita Swingle)
作者: Nimmannoradee Promtong
石巧月
關鍵字: 無子果實
花粉
鏈黴素
CPPU
GA3
果實大小
種子數
可溶性固形物
可滴定酸
seedless fruit
pollen
streptomycin sulfate
CPPU
GA3
fruit size
seed number
total soluble solids
titrable acidity
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摘要: The purpose of this research was to clarify the morphological change in flowering and fruiting, to produce seedlessness fruits by using plant growth regulators, and to improve fruit quality of seedlessness fruits in oval kumquat.Flowering and fruiting of kumquat in normal season (summer fruit) and off season (winter fruit) were found flower bud size, pollen size, pollen viability and germination were not difference. However the percentage of fruit set and fruit quality were similar in both two seasons.Seedlessness fruit could be induced by 120-480 ppm streptomycin sulfate treatment on the 7th day before flowering in both seasons. It was found that seed number per fruit of treated fruits was less than the untreated control and the percentage of seedless fruit was above 70%. Seedlessness was increased apparently along with high streptomycin sulfate concentration. The percentage of seedless fruits increased apparently along with high streptomycin sulfate concentrations and found abnormal seed was higher than untreated control. In addition, streptomycin sulfate treatments induced smaller fruit size in 10-13%. Effects of streptomycin sulfate was found that increasing abnormal pollen tube which appeared wavy wall and swelling. Accompaniments, pollen germination percentage was lower and pollen tube was shorter as compared with control. When seedlessness fruits treated with GA3 20 ppm or CPPU 10 ppm on the 7th day after flowering, it was found that GA3 improved the percentage of seedless in 14–18% in normal season. GA3 and CPPU increased empty seed more than 1 seed in both season and increased the fruit weight in 35-38% in both seasons. CPPU improved the percentage of seedless in 6% in off season and increased the fruit weight in 43-45% in both seasons. GA3 and CPPU improved mesocarp cell of peel. GA3 enhanced higher TSS and lower titrable acidity than CPPU and untreated control in both season.
本研究目的為探討長實金柑開花與結實的形態變化,並利用植物生長調節劑誘導果實的無子化及促進無子果實的品質。由調查正常產期(夏果)及非正常產期(冬果)開花及結實之結果發現,兩者的單株花蕾數、花蕾的大小、花粉大小、花粉活力及花粉發芽均無不同,該兩產期之座果率及果實品質亦相近。鏈黴素(streptomycin sulfate)在兩產期滿花前7日處理花蕾均可誘導形成無子果實,其果實的種子數較無處理者少且無子果率可達70%以上,提高鏈黴素濃度可使無子率增加,但是會促使無子果實小10~13%。鏈黴素處理後會使花粉管畸形化而呈波浪狀的膨大,其花粉萌芽率較無處理的對照組低且花粉管較短。以鏈黴素處理而形成的無子果實在滿花後7日,再以GA3 20ppm或CPPU10ppm處理後,發現GA3處理會使正產期的無子率增加14~18%,並促使兩產期的無子果重增加35~38%,CPPU處理會使非正產期的無子率增加6%,並促使兩產期的無子果重增加43~45%。GA3在兩產期處理後,其果實的可溶性固形物較CPPU處理者及無處理對照高,可滴定酸則較低。
URI: http://hdl.handle.net/11455/89193
其他識別: U0005-2811201416192987
文章公開時間: 10000-01-01
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