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題 名 | 硬質玉米新品種「臺農7號」之育成=Development of New Horneous Maize Hybrid 'Tainung 7' |
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作 者 | 謝光照; | 書刊名 | 臺灣農業研究 |
卷 期 | 68:2 2019.06[民108.06] |
頁 次 | 頁177-188 |
分類號 | 434.11 |
關鍵詞 | 硬質玉米; 熱帶型; 溫帶型; 新品系產量比較試驗; Horneous; Tropical; Temperate; Combining ability; |
語 文 | 中文(Chinese) |
中文摘要 | 玉米GX1M與Hi31種原間存在籽粒產量之最高雜種優勢,乃將GX1M種原進行自交5代培育自交系,然後將自交授粉分離培育的自交系再與Hi31進行雜交生產、組合力評估及新品系產量比較試驗。新品系1M10 × Hi31與1M15 × Hi31與對照種「台農1號」等共進行5次新品系產量比較試驗,其中有4次新品系1M10 × Hi31其籽粒產量明顯較對照種「台農1號」高產,而1次與對照種「台農1號」無明顯差異。綜合試驗結果顯示,新品種「台農7號」(1M10 × Hi31)具有籽粒產量8 Mg ha^(-1)以上之潛力,以及豐產、中早熟、抗南方型銹病等特性。2017年5月8日經行政院農業委員會農業試驗所研管會審查,通過將新品系1M10 × Hi31命名為硬質玉米「台農7號」。此新品種之形態特性為莖部及葉鞘綠色,莖基部為紅色,葉片深綠,葉片數約16片,花藥黃色、穎色及花絲紅色,果穗之苞葉包裹完全。果穗成熟期間植株上半部葉片尚綠色時,籽粒及苞葉已快速脫水,機械採收時籽粒不易破損,適合機械採收。每株穗數1-2枚,籽粒行數14-16行,籽粒呈馬齒型橘黃色,對南方型銹病具抗性。 |
英文摘要 | In the new maize germplasm heterotic group assessment trial, it has been known that Hi31 and GX1M varieties had the best kernel yield in the heterotic group from the field experiment. As a result, five generations of self-crossing from the GX1M variety were conducted to breeding inbred lines, which were then crossed with Hi31 to produce hybrids for the combination assessment and yield trials. Results from 25 hybrids combination assessment trials showed that yields of all 25 hybrids were significantly higher than control variety 'Tainung 1'. The dry kernel yields of the top five highest new combinations were between 7.7-9.5 kg 9.6 m^(-2), from 75% to 115% higher than 'Tainung 1'. From yield trials of the five new maize varieties, the dry grain yield of 1M10 × Hi31 was four times higher than the control variety 'Tainung 1'. The 'Tainung 7' (1M10 × Hi31) new hybrid had high grain yield potential up to 8 Mg ha^(-1) with Puccinia polysora rust resistance and early maturity. The morphology of 'Tainung 7' is described as follows: the colors of stem and leaf sheath are green, the color of leaf blade is dark green, the anther is yellow, the spikelets are light red and silk are red. The number of leaves per plant is 16, number of ears per plant is 1-2, and number of kernel rows per ear is 14-16. The color of kernel is orange. The husk covers the ear completely and the decreasing rate of kennel water content is fast in the maturity stage. |
本系統中英文摘要資訊取自各篇刊載內容。