水稻「台農82 號」誘變系與混系栽培下的稻熱病抗病性 及產量表現之研究
Other Title
Study on the Mixed-Line Cultivation Model of Rice Variety ‘Tainung 82’ Mutant Lines for Resistance of Blast and Grain Yield
Journal
台灣農業研究
Journal Volume
70
Journal Issue
3
Pages
170-181
Date Issued
2021-09
Author(s)
Abstract
本研究於2016 年以水稻品種「台農82 號」及其誘變系為對象，比較「台農82 號」與誘變系在1 : 0、3 : 1、
1 : 1、1 : 3 及0 : 1 等5 種不同比例混合栽培模式下，其植株稻熱病抗病性及產量之表現，以及模式預測能力
之高低。試驗結果顯示，在第一期作混系組與對照組 (即單植「台農82 號」) 比較，隨著混系比例增加，葉稻熱病罹病等級可由8 級降低至3 級，罹病度由88.7% 降低至28.7%，改善效率最高達67.6%；穗稻熱病罹病等級由6 級降低至3 級，罹病度由65.6% 降低至40.0%，改善效率最高達39.0%；產量由最低2,379 kg ha-1增加至最高為4,986 kg ha-1，增產效率達109.6%。惟第二期作對照組葉及穗稻熱病之罹病等級與罹病度，均較前期作減少約50.0%，致使混系組與對照組在稻熱病防治效果及產量表現方面均無顯著差異。
The materials used for this study were rice variety ‘Tainung 82’ and its mutantlines. All the lines were cultivated in 5 different ratios of mixed combinations, 1 : 0, 3 : 1, 1 : 1, 1 : 3 and 0 : 1 in the first cropping season of 2016. The goal of this study was to investigate blast resistance, grain yield and predictability under mixed-line cultivation models. The results revealed that when the ratio of mixed-line cultivation increased, as compared to the individual cultivation of ‘Tainung 82’, the disease scale of leaf blast decreased from level 8 to 3, disease severity decreased from 88.7% to 28.7%, and the highest efficiency of improvement had reached 67.6%. The disease scale of panicle blast decreased from level 6 to 3, disease severity decreased from 65.6% to 40.0%, and the highest efficiency of improvement had reached 39.0%. The grain yield increased from 2,379 kg ha-1 to 4,986 kg ha-1, and the efficiency of improvement was 109.6%. However, the disease scale and severity of both leaf and panicle blast in the second cropping season decreased about 50.0% when compared to those of the first cropping season.
Subjects
水稻
稻熱病
混系栽培
誘變系
邏輯斯回歸
Rice
Blast
Mixed-line cultivation
Mutant line
Logistic regression
Publisher
農業試驗所
Type
journal article
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