甘藷品種改良

Abstract

本試驗為期選育豐產、質優之鮮食用及食品加工用新品種，採用人工及多向雜交方法育種，並按實生系選拔之育種程序進行。本年度多向雜交共採收雜交種子約20 萬粒,人工雜交四組合共採收種子5,051 粒，實生系選拔得春夏作30 品系，秋作195 品系，品系產量比較試驗，春夏作第一年組共選出6 個優良品系，秋裡作第一年組則選出13 個優良品系，以進行第二年組之產量比較之試驗。在區域試驗方面，秋裡作部份，供試7 品系經2 個地點第二年試驗結果，供試品系中以CYY94-C42 之塊根產量較佳。 The purpose of this breeding program were to develop new sweet potato varieties with high yield and good quality for table-use and processing-use, we adopted artificial cross and polycross to select new lines, the result are summarized as follow: a total of 205,051hybrids seeds were obtained from polycross and artificial cross during Oct. 2010 to Feb. 2011 through seedling selection, 30ones for spring planting and 195 clones for fall planting were selected from 10,000 and 80,000 hybrid seedling respectively. Among the entries in primary yield trials, 6 clones and 13 clones were selected for the spring and fall planting, those lines are all superior to the check variety in root yield potential as well as taste and agronomic characters. Among the entries in advanced yield trial,4 clones for the spring planting and 6 clones for the fall planting were selected for high fresh root yield potential and good quality, 7 newly developed clones of regional yield trial were conducted in this fiscal year, In the fall planting of 2011, CYY94-C42 was higher average fresh root yield at 2 locations than other tested clones.