頁籤選單縮合
題名 | 小白菜(Brassica chinensis L. var. chinensis)種原園藝特性遺傳歧異研究=Diversity in Morphological and Horticultural Traits in Brassica chinensis L. var. chinensis |
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作者 | 張簡秀容; | 書刊名 | 桃園區農業改良場研究彙報 |
卷期 | 71 2012.06[民101.06] |
頁次 | 頁35-46 |
分類號 | 435.232 |
關鍵詞 | 小白菜; 園藝特性; 集群分析; 主成分分析; Brassica chinensis L. var. chinensis; Horticultural traits; Clustering; Principal component; |
語文 | 中文(Chinese) |
中文摘要 | 本研究旨在探討國內小白菜(B. chinensis L. var. chinensis)種原的遺傳多型性與釐清種原的園藝性狀變異,以選取具潛力種原提供作為夏季設施栽培品種改良之材料。小白菜種原蒐集來源為國內西半部地區地方品種與農友自留種,夏季於設施內評估其植株形態等10項外表性狀,再經遺傳歧異分析,結果顯示其具分歧現象,以植株生長勢與葉片表面兩者的多型性較多,葉緣形狀與葉毛則較少。葉片鮮重等13項園藝性狀採用集群與主成分分析,可清楚定義種原園藝性狀,提供精確訊息,協助選取育種目標性狀之材料。集群分析群聚園藝性狀相似的種原在同一群,且與主成分分析的辨識效果相似。群聚A亞群A-2種原TYC04與TYC47位在座標圖右側上方,植株葉片綠色與黃色相較低,可供作選育葉色淡綠淺黃特性的優良種原;群聚A亞群A-1種原TYC37與TYC38位在座標圖的最上方,其葉片鮮重、葉柄鮮重、地上部鮮重、葉片長、葉面積及葉柄寛等6項園藝性狀表現最好,葉片顏色明度高,可供作選育植株鮮重高與葉片色澤亮之親本材料。但種原TYC37與TYC38具葉片顏色綠、葉片薄及葉柄細等缺點,若組合其他具葉片厚、葉柄粗及葉色淡綠淺黃的種原,期能育成夏季設施栽培小白菜新品種。 |
英文摘要 | The experiment was to study the morphological diversity of B. chinensis L. var. chinensis accessions, and evaluated their horticultural traits in order to know the potential use of the local accessions incorporated to breeding programs in the future. Thirty-five accessions were either local landraces or obtained from farmers in the western Taiwan. Genetic diversity based on morphological traits showed a high level of variation among accessions. Higher polymorphism was exhibited in growth vigor and leaf surface, while lower polymorphism in leaf margins and leaf hairiness. Cluster and principal component analyses based on horticultural traits were to obtain information on the usefulness of the traits and to determine relationships among them. Cluster analysis displayed a wide range of diversity for traits, and pooled accessions of similar characteristics in a same cluster. Principal component analysis showed that the first two principal components accounted for 63.9% of the variability among the 35 accessions and was associated with plant leaf, petiole and shoots fresh weight, leaf length, leaf area and petiole width, and leaf colors. The first two principal components were plotted to observe the relationships among the accessions. In subgroup A-1, TYC37 and TYC38 on the top of the plot could be utilized in hybridization program to develop high plant fresh weight and lighter leaf color. However, deeper green leaf, thinner leaf and stem need to be combined with some accessions for lighter green leaf color, thicker leaf, longer petiole, and larger petiole diameter, to develop elite cultivars. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。