植酸酵素基因轉殖之馬鈴薯植株生長和產量評估

Plant Growth and Yield Evaluation of Phytase Transgenic Potato

陳烈夫(Lit-Fu Chan) ； 曾文彬(Wen-Pin Tseng) ； 魏夢麗(Meng-Li Wei) ； 呂秀英(Hsiu-Ying Lu)

《台灣農業研究》 56卷1期 (2007/03) Pp. 45-52

https://doi.org/10.6156/JTAR/2007.05601.05

摘要

馬鈴薯(Solanum tuberosum L.)是世界上最重要的非禾穀類糧食作物。基因轉殖馬鈴薯2-1品系，是由克尼伯(Kennebec)品種轉殖植酸酵素基因(phytase gene)所產生的基因轉殖作物。根據在農業試驗所隔離試驗田進行的2004-2005年秋作試驗結果顯示，植酸酵素基因轉殖馬鈴薯在各生長期的主莖長、側枝數及地上部乾重等生長介量雖較克尼伯為低但未達統計上5%顯著水準差異；單株薯球總鮮重雖稍低但亦無顯著差異。植酸酵素基因轉殖馬鈴薯2-1品系可能不適合自行留種連續栽種，其第二年（2005年）連續栽種之產量表現，小於120 g的薯球數量明顯減少。轉殖馬鈴薯在第四週時的出土率，也顯著低於非轉殖馬鈴薯。

關鍵字

馬鈴薯 ； 基因轉殖作物 ； 植酸酵素基因 ； 薯球產量 ； 出土率

並列摘要

Potato (Solanum tuberosum L.) is the most important noncereal food crop in the world. The transgenic potato plants, strain 2-1, were obtained by phytase-gene transformation into their original plants, cv. 'Kennebe'. Here, we carried out an isolated field experiment to compare the plant growth and yield performance of both phytase transgenic and non-transgenic potato plants at Agricultural Research Institute in the fall of 2004 and 2005. The results showed that the transgenic potato plants were slightly lower than non-transgenic potato plants in main stem length, lateral stem length, shoot dry matter and tuber fresh weight in three different growth periods, but the differences were not statistically significant (p＞0.05). The transgenic potato plants harboring phytase gene might not favor continuous cultivation using harvested seed potatoes because of significant number reduction of tuber with less than 120 g in the second-year cropping (2005). Phytase transgenic potato showed a significantly lower emergence rate than non-transgenic potato at 4 weeks after planting.

並列關鍵字

Potato ； Genetically modified crops ； Phytase gene ； Tuber yield ； Emergence rate