曾清田 楊藹華 黃俊杉
台南6號命名前代號為南育75-23，屬單雜交品種，其系譜為Edward White Martin(A)×B 815-39-5-6-1(R)(簡稱96R)。母本Edward W. M. (A)為自美國Texas A & M引進之細胞質雄不稔性品系，白色籽實，對葉斑病及黍蚜具中抗性。父本96R為稔性恢復系統，白色籽粒，是自族群培育出之自交系，對葉斑病及黍蚜具强抗性。南育75-23于75年選育出後，經參加新品系比較試驗，全省性區域試驗，栽培密度及肥料試驗，低溫出土率試驗，病蟲害抗性檢定，品質與酒精濃度分析。各項試驗及檢定結果顯示，本品種產量高且穩定並具有抗葉斑病、黍蚜及耐低溫發芽之特性，澱粉含量及酒精濃度均高，飼料或釀酒用兩相宜。本品種適合彰化及雲嘉南地區推廣栽培。種植密度以每公頃株數在160,500∼210,000株之間為宜，行距為60∼70公分，株距10公分。施肥量：每公頃氮素100公斤，磷素60公斤及鉀素50公斤。南育75-23於81年6月11日經農林廳召集之作物新品種審查會通過，命名為台南6號。
Breeding of the Newly Developed Sorghum Hybrid “Tainan No. 6”
Tseng, C. T., A. H. Yang and C. S. Huang
Tainan No. 6 is a single cross sorghum hybrid and was coded as Nanyu no. 75-23 before registration. Its pedigree is Edward White Martin (A)×B815-39-5-6-1 (R) (abb. 96R). The maternal line Edward W. M. (A) was introduced from Texas A & M. It is a cytoplasmic male sterile line and characterized with intermediate resistance to leaf blight Drechslera sorghicola and sorghum aphid Longiunguis sacchari. The paternal line 96R was bred from an improved population. 96R is a male restored line and characterized with highly resistance to leaf blight D. Sorghicola and sorghum aphid L. sacchari. Since being selected out in 1987 Nanyu No. 75-23 was recommended to join in newly combined hybrids evaluation, island-wide regional yield trial, plant density and nitrogen fertilizer test, cold tolerance in germination evaluation, reaction test on various economic important disease and insect pests as well as chemical analysis for quality and alcohol concentration. The data collected from the above tests indicated that Nanyu 75-23 is characterized with stable high-yielding ability, intermediate resistance to leaf blight D. sorghicola and sorghum aphid L. sacchari, cold tolerance in germination. With high starch content and alcohol concentration in grain Nanyu No. 75-23 is a proper sorghum hybrid for both of wine brewage and livestock forage. It is also a variety suitable for cultivating in Changhua and Chia-Nan areas. After being evaluated by the meeting of the Registration Committee for New Crop Cultivar convened by the Department of Agriculture and Forestry, Taiwan Province Government, Nanyu No. 75-23 was finally named as Tainan No. 6 in June, 1992. The proper plant density for Tainan No. 6 is ranged from 160,500 plants to 210,000 plants per hectare. The recommended amount of N.P.K. fertilizers per hectare is 100 kg, 60 kg and 50 kg, respectively.
Keywords: sorghum hybrid, grain yield, cold tolerance in germination, disease and insect pest resistance, alcohol concentration
Accepted for publication: September 7, 1993.