黑糯玉米臺南25號為新育成單雜交品種。原品系代號為PWX 95-7,自民國94年起進行新品系組合力檢定試驗,再經新品系比較試驗、新品系區域試驗、官能品評、果穗籽粒理化性分析及抗病性檢定等試驗,於99年命名為臺南25號。臺南25號植株性狀整齊,抗倒伏且穗位適中,有利人工採收。對玉米重要病害露菌病及莖腐病均具抗性。株高在春作約180〜190公分,秋作為195〜205公分。臺南25號屬於中熟品種,開花期及成熟期隨氣溫之變化而異,一般春作播種至開花約60天,秋作約45天;開花與吐絲約相差1〜2天,籽粒充實飽滿,春作約80〜85天,秋作為65〜72天即達採收期。本品種糯性高且風味口感佳,皮薄味美,籽粒可溶性固形物為12〜13°Brix,是豐產且適應性廣之優良糯性品種。
Tainan No. 25 is a single cross variety which released by Tainan DARES in 2010. It showed good performance and high fresh ear production in yield trial, regional trials and sensory evaluation trials etc. The new variety has high fresh ear yield with husk about 11,565 kg/ha, good ear shape and good eating quality. Tainan No. 25 also has good resistance to downy mildew and stalk rot. It is an intermediate maturity waxy corn with purple seed coat and also suitable to be cultivated in Yun-Chia-Nan area.