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題 名 | 落花生種間雜交種之鑑別及其特性分析=Identification and Characteristic Analysis of Interspecific Hybrids of Peanut |
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作 者 | 黃惠娟; 曹文隆; 林順福; 謝兆樞; 蔡志濃; | 書刊名 | 中華農業研究 |
卷 期 | 48:1 1999.03[民88.03] |
頁 次 | 頁40-51 |
分類號 | 434.255 |
關鍵詞 | 落花生栽培種; 落花生野生種; 種間雜交種; Cultivated peanut; Arachis hypogaea; Wild peanut; Interspecific hybrid; |
語 文 | 中文(Chinese) |
中文摘要 | 為改良栽培種落花生之�蚽f及葉斑病抗性,本所引進抗病野生種落花 生種原,經兩年觀察試驗後,將8個野生種原與本地栽培種進行種間雜交。經由 染色體數目的觀察及RAPD的分析,確認得到三倍體F1的植株,而理論上不稔 的F1植株,藉由自然發生或人為秋水仙素處理形成的無減數分裂的孢子,即2N 的花粉,可得到染色體數不等(2n=40∼60)的F2後代,其中部分單株可稔,目前 已繁衍到F5世代。雜種後代抗�蚽f的檢定結果,初步可確知野生種的抗�蚽f性 機制不同於栽培種的緩�蚽f性,且不同野生種間其抗�蚽f的遺傳機制亦不相同, 其中A. chacoense對�蚽f為免疫性,其抗性機制不屬於顯隱性關係。A. villosa 及A. spegazzinii則為部分顯性。 |
英文摘要 | To improve disease resistance to rust and leaf spots, eight introduced wild species of peanut germplasm were crossed with cultivars grown in Taiwan. The F₁ plants of cross combinations were confirmed to be triploid by the examination of chromosome number and RAPD analysis. By colchicine treatment or spontaneous diploidization, the interspecific F₁ hybrids could produce ameiotic spores namely, 2N pollen, thus various numbers of chromosome were observed in the F₂ progenies (2n = 40-60). Some of the F₂ plants were fertile, and the progenies were propagated to F[8fa3] generation. The results of rust pathogen inoculation for interspecific F[8fa3] hybrid progenies were summarized as follows: The resistance for rust of wild type peanuts were different from the slow resistant mechanism of cultivars. The wild type peanuts have the different genes for rust resistance, such as the resistance of A. chacoense was immunity, and the resistance of A. villosa and A. spegazzinii were partial dominance. |
本系統中英文摘要資訊取自各篇刊載內容。