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題名 | 紅豆F[feaf]族羣成熟期落葉性及其他農藝性狀之研究=Studies on Leaf Abscission at Maturity and Agronomic Characters in F[feaf] Population of Adzuki Bean |
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作者 | 周國隆; 曾富生; 吳詩都; | 書刊名 | 高雄區農業改良場研究彙報 |
卷期 | 16:4 民94.12 |
頁次 | 頁1-15 |
分類號 | 434.223 |
關鍵詞 | 紅豆; F[feaf]族群; 遺傳率; 主成分; 路徑分析; Adzuki bean; F[feaf] population; Heritability; Principal component; Path analysis; |
語文 | 中文(Chinese) |
中文摘要 | 本研究主要目的在探討紅豆F2 族群間之落葉性及其他農藝性狀之變異,以供育種選拔上的參考。試驗結果顯示,七個雜交組合可分為三群, C191、C192、C194 與C193 等四個組合關係較密切可歸為第一群,C189 與C190 兩組合關係較密切歸為第二群,而C188 組合偏離而獨立為第三群。七個組合F2 族群之成熟期落葉率的遺傳率為0.211~0.550,有效基因對數至少有2~4 對所控制,顯示此性狀易受環境影響,其遺傳行為可能受多基因系統所控制,進行該性狀選拔時不宜在早期世代直接選拔,應著重於後期世代方始有效。在產量路徑分析方面,七個組合均以植株總重及單株莢數對籽粒產量正的貢獻量最大,而成熟期落葉率對籽粒產量直接效果在七個組合均為正的影響,主要經由植株總重之間接負的影響,而造成C190、C191、C193 及C194 等四個組合之成熟期落葉率與籽粒產量間呈顯著負相關,其餘C188、C189、C192 等三個組合則相關不顯著,其對籽粒產量的貢獻量為-0.8~-2.8%。顯示在C188、C189、C192 等三個組合的後代族群中,有機會選拔到成熟期落葉性佳,且產量具有一定水準的遺傳因子型。 |
英文摘要 | The main purposes of this study was to investigate the variation of leaf abscission at maturing stage and the other agronomic characters in F2 population of 7 cross combinations for adzuki bean in order to develop selection. The results were summarized as follows: According to the principal component analysis by 7 agronomic characters, it showed that the 7 cross combinations were classified as 3 groups by high relationship in the same group. The group 1 including C191, C192, C193, and C194 combinations, and the group 2 consisted of C189 and C190 combinations, but the group 3 only contained C188 combination. In 7 cross combinations, the heritability of the leaf abscission percentage (LAP) at maturing stage were from 0.211 to 0.550, and the trait was controlled by at least 2 to 4 alleles. The results showed that LAP at maturing stage was affected easily by environmental conditions, and was controlled by polygenic inheritance. Thus we ought to pay attention to selecting the later generation than earlier generation. The path analysis showed that the maximum positive contributions for seed yield were total plant weights and pod numbers per plant. The direct effect of LAP at maturing stage showed positive effect to seed yield of all 7 combinations. However, the final relationship between LAP and seed yield of C190, C191, C193, and C194 combinations were negative, and C188, C189, and C192 combinations had no significant correlation by the indirect negative effect of total plant weight. In conclusion, It's possible to select the genotype not only possesses good leaf abscission at maturing stage but also with higher seed yield from C188, C189, and C192 combinations of segregation populations. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。