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題 名 | 芻料用蜀黍抗葉斑病基因所座落染色體對之釐定=Identification of Chromosomes Carrying Resistant Genes of Target Leaf Spot in Forage Sorghum |
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作 者 | 蕭素碧; | 書刊名 | 中華農學會報 |
卷 期 | 178 1997.06[民86.06] |
頁 次 | 頁35-41 |
分類號 | 434.153 |
關鍵詞 | 芻料用蜀黍; 葉斑病; 落色體; Forage sorghum; Target leaf spot; Chromosome; |
語 文 | 中文(Chinese) |
中文摘要 | 葉斑病為台灣蜀黍重要病害之一,一旦感染,對產量及品質影響很大,本試驗即 在探討蜀黍抗葉斑病基因所座落之染色體對,以提供抗病品系選育之依據,因此利用蜀黍同 型轉座染色體 T- l0 等十個同源系 (來自 Combine 7078) 與甜高梁 UI9B 純系雜交,其十 個 Fl 組合分別再與 UI9B 回交,得十個 FlBCl 回交種子, 於台灣省畜產試驗所葉斑病圃 種植, 成熟時調查每組合每株之可稔性反感病程度,經卡氏獨立顯著性測驗,結果以 T-lO , T-24,T-26 及 T-28 等當親本之四個回交組合之分離此皆達顯著水準,其參與轉座染色 體分別為 CB、FJ、EF 及 BH,將其與其他同源系一一比對,可知蜀季至少有兩對即 B 及 F 染色體上攜帶有抗葉斑病基因。 |
英文摘要 | For identifying the chromosomes of forage sorghum that carry the genes with resistance to target leaf spot at maturity, a set of ten reciprocal translocation stocks (all high susceptibility) segregation from Combine 7078 line, involving each of the 10 chromosome pairs of sorghum in at least two of the translocation, was crossed and backcrossed again to a highly resistant line of U19B, respectively. Backcross progeny plants were tested in the field infested with target leaf spot disease. Individual backcross plants were classified as semisterile or fertile on the basis of seed set. They were also classified for susceptible or resistant plants. the results showed that the segregating ratios of four backcrossed combinations involved translocation chromosomes CB, FJ, EF and BH were not equal to 1:1:1:1. It was suggested that at least two (B and F cchromosomes) of the 10 chromosome pairs were involved in the resistance to target leaf spot disease in forage sorgham. |
本系統中英文摘要資訊取自各篇刊載內容。