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頁籤選單縮合
題名 | 玉米種子發芽之耐銨性及耐性組合力分析=Ammonium Tolerance of Seed Germination in Maize (Zea mays L.) and Their Combining Ability Analysis |
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作者 | 謝光照; 曹文隆; 楊金興; 盧煌勝; | 書刊名 | 中華農業研究 |
卷期 | 52:2 2003.06[民92.06] |
頁次 | 頁119-129 |
分類號 | 434.11 |
關鍵詞 | 銨; 玉米; 發芽; 組合力; Ammonium (NH[feb2]狇); Maize; Germination; Combining ability; |
語文 | 中文(Chinese) |
中文摘要 | 以6個玉米自交系及其相互雜交所獲得的30個F₁單交種為材料,在銨離子(NH₄[90a7])5種(0, 5, 25, 50, 100 mM)濃度下,於恒溫(36±1℃)生長箱中進行發芽試驗。變方分析結果顯示銨離子濃度間、基因型間與銨離子濃度x基因型間之交感作用對所有發芽性狀均有極顯著之影響。其中發芽率、3日發芽勢和發芽係數呈現隨著銨離子濃度之增加而下降之趨勢,當銨離子濃度達50 mM以上時,即明顯的阻礙種子發芽。不同的基因型間其耐性程度也有所差異。由Griffing之組合力分析,顯示平均發芽時間、發芽率、3日發芽勢和發芽係數均受一般組合力(GCA)、特殊組合力(SCA)及反交效應(RE)等遺傳基因所共同影響,其影響力之大小呈現GCA>RE>SCA之趨勢。在高銨濃度下(50 mM以上)其GCA/SCA均方比值呈現小於低銨濃度(5-25 mM)。所使用的自交系中以TA83-17、H95及A661具有較佳之耐銨性,而F₁單交種中以ICAL210×A661、TA85-17×A661、及A661×TA85-17表現最佳之耐銨性。 |
英文摘要 | All possible cross combinations were made among six maize (Zea mays L.) inbred lines that selected from different germplasms. Seed germination test was carried out on Filter paper in petri dish. Three replicates, 50 seeds of each genotypes, were tested at five concentrations (0, 5, 25, 50, 100 mM) of ammonium (NH₄[90a7]). Applied by 30 ml ammonium solution each petridish. After incubation of maize seed at 36±1℃ in controlled growth chamber for 10 days. Seed germination characters including mean time to germination, germination rate, germination potential in 3 day, and germination coefficient, were investigated. Analysis of variance indicated that four germination characters were highly affected by ammonium ion, genotype, and interaction between ammonium and genotype. The germination rate, germination potential in 3 days, and germination coefficient were decreased while the ammonium concentration increased. The retardation of seed germination was more significantly, when the ammonium concentration higher than 50 mM. In this trial, the degree of tolerance for ammonium showed variation in inbred lines. Based on Griffing's method of analysis, the result indicated that general combining ability (GCA), specific combining ability (SCA), and reciprocal effect (RE) significantly affected all germination characters at various ammonium concentrations. The contribution ratio order was GCA>RE>SCA. And the GCA/SCA ratio of germination characters in high NH₄[90a7] concentration (50 mM) were smaller than low NH₄[90a7] concentration. In this trial, the genotype TA85-17, H95, ICAL210 × A661, TA85-17 × A661, and A661 × TA85-17 shoos'ed better ammonium tolerance when germinated at higher ammonium concentration. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。