• 作者： 陳成; 劉孔生
• 作者服務機構： 國立台灣大學農藝研究所
• 中文摘要： G. N. Collins 於1909年自中國玉米中發現蠟質基因，此種玉米之胚乳及花粉以碘液染色呈紫紅色，與一般之藍黑色不同。蠟質玉米之經濟價值較高，但目前有關農藝性狀之研究並不多見，因此本研究以不同來源之全套轉座蠟質系統與非蠟質優良自交系為材料，進行交配，探討蠟質基因在雌、雄配子體之競爭性，及對子實百粒重之影響，以供將來轉座同原系建立後，作為蠟質基因對於染色體轉座效應之　參考。大致上蠟質基因在形成配子體及授精時競爭力較弱，蠟質子實百粒重亦較輕，惟此種差異與親本之遺傳背景有關，在某些組合其差異並不顯著。且部分系統為雄親或雌親時，具有母體效應，子實之差異亦受雌親影響。至於蠟質基因與染色體轉座對於雌、雄配子體競爭效應之影響，須俟轉座同原系建立後，方可確定。
• 英文摘要： Waxy gene was discovered by G. N.Collins from Chinese corn in 1909. Thecolor of waxy endosperm and pollenappears purple-red when stained byiodine solution. The economic value ofwaxy corns is higher than non-waxyones. There are few research reportsabout their agronomic characters. Thepurposes of this study are to study thegametophytic competition and the effecton kernel weight. The experimentalmaterials including one set of chromo-somal translocation stocks (waxy) comefrom different genetic background, eliteinbred H95 (non-waxy) and differentgenerations of a complete diallele cros-ses. The results of this experiment willprovide information on the relationshipbetween waxy gene and different chro-mosomal translocation isogenic lineswhen they are established. Generally, the competition of waxygene in gametophyte formation andfertilization is weaker than that of non-waxy gene. The kernel weight is alsolighter than non-waxy ones. But insome combinations the differences arenonsignificant. The differences of ga-metophytic competition and kernel wei-ght associate with genetic backgroundof parental entries. There are maternaleffects on kernel weight when somewaxy corns was used as the femaleparent. These competition effects onsuch chromosomal translocation are notconfirmed, it will be deduced until theisogenic line of chromosomal translo-cations reestablished.
• 中文關鍵字： --
• 英文關鍵字： --