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洋香瓜抗蔓枯病自交系之育成
Breeding of Muskmelon Inbred Lines Resistant to Gummy Stem Blight
摘要
本研究自民國八十年秋開始選用洋香瓜抗蔓枯病品種PI140471及Chilton與溫室洋香瓜Earl's Favourite－春、夏、秋系及哈密瓜黃皮系雜交，後代苗期本葉1～2枚時接種蔓枯病Didymella bryoniae (Auersw.) Rehm菌絲塊於莖郁，篩選健康株培養，並用譜系法及回交法留種，選擇優良自交系，迄八十三年春作己選拔至F6，其中02－B1－8－3－1、02－B1－B5－1－3、02－B1－B5－1－4、02－B1－B5－4－1、03－B5－8－1－1、05－B2－5－1－2、05－B2－5－1－4等七個品系抗蔓枯病純度已達72.2%～97.9%，且果實性狀優良，可作為自交系利用。
並列摘要
Gummy stem blight resistant varieties of PI140471 and Chilton muskmelon were used to cross with Earl's Favourite-spring, summer, autumn lines and Ha-mi yellow skin lines during autumn of 1991. The seedlings of progenies were inoculated with mycelia lump of Didymella bryoniae (Auersw.) Rehm on stem at 1~2 true leaves stage and the healthy plants without symptoms were saved. The seeds of these progenies were further improved and selected by pedigree and back cross method. Finally, 7 inbred lines i.e. 02-B1-8-3-1, 02-B1-B5-1-3, 02-B1-B5-1-4, 02-B1-B5-4-1, 03-B5-8-1-1, 05-B2-5-1-2 and 05-B2-5-1-4 reached 72.2%-97.9% homozygosity with gummy stem blight resistance and good fruit characteristic in F6 generation in 1994.
延伸閱讀
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