查詢結果分析
相關文獻
- 菸草CMV抗病品系在不同氣溫下對TMV反應之研究
- 臺灣的氣候變化--氣溫和降水
- 植物組培瓶內熱傳模式之研究
- 日射量及溫度對水耕芥藍菜硝酸態氮含量之影響
- 塔塔加地區森林火災對松類造林地微氣候的影響
- Ca[fec7]-dependent Excretion of Salicylic Acid in Tobacco Cell Suspension Culture
- Potential Climate Change in Taiwan during Greenhouse Warming: A Semi-Empirical Approach
- 苗期溫度與光期處理對菸草開花之影響
- 氣象因子對小白菜生長速率之影響
- 菸草屬種間雜種致死之研究(5)--四對顯性互補雜種致死基因(A、B、C、D)與雜種致死關係之推測
頁籤選單縮合
題名 | 菸草CMV抗病品系在不同氣溫下對TMV反應之研究 |
---|---|
作者姓名(中文) | 吳壬癸; | 書刊名 | 中華農學會報 |
卷期 | 75 1971.09[民60.09] |
頁次 | 頁35-42 |
關鍵詞 | CMV抗病品系; TMV反應; 氣溫; 菸草; |
語文 | 中文(Chinese) |
中文摘要 | (一)利用F.O. HOLMES 抗病品系(本所編號G.A.T.)作為抗病親本之CMV抗病育種,選拔抗病株已接種TMV後所現特殊之Few-Small-Late lesion 斑點反應為依據,從F2族?中選取極少數(0.39%)之F. S. I. 抗病單株。但由於分離族?中F. S. L.,S. L. 及N-type等各型斑點常因溫度高低而改變其斑點之形狀及大小,而使選拔工作有時不夠精確,為明瞭各型斑點在不同溫度下之變化情形,以供育種選拔時之參考,為本研究之主要目的。 (二)溫度對F. S. L.,S. L. 及N-type各型斑點之始斑日數,斑點數,大小及變化情形等均有極顯著之影響,亦?常溫(平均25.4℃)較定溫(23℃)能促進斑點之早現(早1.11日),增加斑點數(增19.5%)並加速斑點之擴大,至於各型斑點形狀上之特徵則不因溫度變化而受影響。 (三)品系間之始斑日數及斑點數亦均有顯著之差異,F. S. L.壞疽斑始斑最遲,斑點數最少。N-type壞疽斑出現最早,斑點數則除BC2F2較S. L.少外,Vamfen-Hicks之斑點數則顯較F. S. L.及S. L.為多,而S. L.之始斑日數及斑點數則均居中。 (四)HOLMES CMV抗病品系(G.A.T.)接種TMV後之斑點小而少,出現日期遲,斑點初現時約1mm左右,後擴大至2mm左右?行停止,最後斑點中心變白。其斑點在常溫環境下較定溫始斑日數早1.15日,斑點數則增加23.6%,斑點擴大速度則快3日。 (五)本所育成之CMV抗病系統(BC1F3),其所現斑點之形狀,大小及變化情形均與G. A. T. 完全相同,惟期始斑日數較G. A. T. 遲0.3日,斑點數亦較少,約為G. A. T. 之一半。而其斑點在常溫下較定溫早現1.65日,斑點數增加29.3%,斑點擴大速度亦快3日。 (六)(Vamfen-Hicks×Ambalema)F3族系(S. L.)其斑點外形與F. S. L.雖極相似,但在同一時期及相同環境條件下進行接種時,S. L. 斑點較F. S. L.略大,始斑早1日,斑點數則多2~3倍,至於S. L. 壞疽斑在常溫及定溫環境下之差別,則常溫之始斑日數提早 1.75日,斑點數增加11.6%,斑點擴大速度快1日。 (七) Vamfen-Hicks之N-type斑點其斑點出現最早,斑點數亦最多,且斑點周圍有明顯之褐圈為其最明顯之特徵,其多數斑點迅速擴大而接連成一大壞疽斑,變化快速使葉面起皺,中支脈褐變萎縮甚至全葉枯乾。而溫度對Vamfen-Hicks之N-type斑點影響,則常溫較定溫其始斑日數早0.55日,斑點數增加13.2%,而斑點之擴大速度則早2日。 (八) BC2F2 (與Vamfen-Hicks回交之自交後代)菸苗在接種TMV後,理論上應有N-type,S. L. 及 F. S. L. 三種病徵出現,但由於N-type菸株所佔比例高達93.75%,在選苗時獲選機會較大,而本研究每品系供試菸株僅有20株,因此選用BC2F2菸株均屬N-type。至於此項菸苗所現N-type斑點特徵,除病斑數顯較Vamfen-Hicks 為少外,其他特徵則與Vamfen-Hicks所出現之斑點完全相同。而溫度對BC2F2(N-type)斑點之影響。則常溫能提早始斑日數0.45日,增加斑點數46.9%,斑點擴大之速度亦早2日左右,與Vamfen-Hicks約略相似。 |
英文摘要 | Holme's resistant line (GAT) was used as the source of CMV resistance for breeding tobacco resistant to CMV. The few-small-late-lesion (F. S. L. ) reaction of resistant line to TMV was taken as a criterion for selection. However, it was difficult to distinguish the lesion reaction expressed by various genotypes in F2 population, particularly for the F. S. L. and S. L. (small-late-lesion) which were effecte dby different temperatures. The purpose of this study was to find out lesion variation under two different temeratures in order to make sure the difference of these two types of lesion. Under relatively high temperature (25.4℃) the lesions occurred earlier, more in number, and varied in shape. The F. S. L. expressed by resistant plant was the latest to show up and N-type lines the earliest. The number of lesions occurred on N-type plant was much more than that on CMV resistant plant, F. S. L. and the S. L. genotype. The number of lesions and the date of spot appearance for the small lesion genotype were between the N-type and the F. S. L. genotype. After inoculation with TMV, Holme's resistant line (GAT) showed the least in spots number and the spot occurred very late. The spot size was about 1 mm in diameter when the spots showed up, later it enlarged to 2 mm. Finally, the center of the spot turned to be white. Under high temperature (about 25℃) the spot showed up 1.15 day earlier, the number of spots was 23.6% more, and the spot enlargement rate was two days faster, than that under constant temperature (23℃). For all selected lines derived from GAT, the number of spots was only half as much as that of GAT; the spots occurred 0.3 day later, and the other characteristics of the spot were exactly the same as that of GAT. Under high temperature the days to spot appearance was 1.65 day earlier, the number of spots 29.3% more, and the spot enlargement rate 3 days faste than that of G.A.T. The lesion appearance of Vam-Hicks ×Ambalema F2 S. L. was similar to that of the F. S. L. But, if TMV inoculation was made under the same environmental conditions and at the same day, the size of lesion appeared on Vam-Hicks ×appe- Ambalema F3 was slightly larger, the days to spot arance was one day earlier, the number of spots was twice to trifold as much as that of the F. S. L. Under high temperature. The days to spot appearance was 1.75 day earlier, the number of spots 11.6% more, the spot enlargement rate one day faster, for the S.L. genotype than that of resistant line (F. S. L.). The necrotic type lesion of Vamfen-Hicks had the earliest days to show spot highest number of spots. The necrotic lesion on Vamfen-Hicks was surrounded by a brownish halo which could be distinguished from lesions expressed by other genotypes. The spots enlarged so quickly that made the leaf to be shrinked. If the spots occurred on the midribs which would be turned brown and consequently dried up. Under high temperature, the N-type lesion occurred 0.55 day earlier and was 13.2% more in number and 2 days faster in spot enlargement rate. The lesion on BC2F2 line derived from Vamfen-Hicks (N-type) showed the same spot as that appeared on Vamfen-Hicks. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。