@article{oai:repository.naro.go.jp:00001285,
 author = {吉川, 亮 and YOSHIKAWA, Ryo and 中村, 和弘 and NAKAMURA, Kazuhiro},
 journal = {東北農業研究センター研究報告, Bulletin of TOHOKU Agricultural Research Center},
 month = {Mar},
 note = {Diallel cross analysis for pre-harvest sprouting resistance was conducted in wheat (T. aestivum). We used 49 F_1 lines derived from complete diallel crosses between 7 red-grained parental varieties for analysis. A pre-harvest sprouting test was carried out using 5-6 spikes of F_1 plants (F_2 seeds) and parental varieties. Artificial wetting treatment (AWT) for 11 days using a rainfall simulator was carried out starting 1 day and 6 days after maturity time, and we investigated the reverse sine transform value of the percentage of sprouted grain (PSG) in intact spikes. In diallel analyses for PSG following AWT at 6 days after maturing time and an average PSG of ATW at 1 day and 6 days after maturing time, we obtained similar results, as follows : In analysis of variance, the additive effect (a) and dominance effect (b) were significant at the 1% level, but the reciprocal effect (c) and specific reciprocal effect (d) were not significant. The (Vr, Wr) graph indicated that the slope of the regression line of Wr on Vr was close to 1, indicating that the simple additive-dominance genetic model was adequate and that the effect of the maternal effect and non-allelic interaction (epistasis) were absent. Though additive variance was larger than dominance variance, environmental variance was small in the genetic variance, and the pre-harvest sprouting resistance was controlled by both the additive effect and the dominance effect. The average degree of dominance showed incomplete dominance. Pre-harvest sprouting resistance was mainly controlled by dominant genes, and we estimated that the parental varieties with strong pre-harvest sprouting resistance had the same dominant resistance genes. The heritabilities in a broad sense were high (0.874-0.923) , but the heritabilities in a narrow sense were moderate (0.517-0.564). The general combining ability and specific combining ability of PSG (reverse sine transform value) were significant., 穂発芽耐性が異なり粒色が赤褐色の小麦7品種・系統を供試して、完全ダイアレル交配を行い、49組合せのF_1植物 (F_2種子) の5～6穂を用いて穂発芽検定を行った。成熟期1日後および6日後の穂は穂発芽検定装置内で11日間の人工降雨処理を行い、穂発芽率を調査した。そして、穂発芽率の逆正弦変換値についてダイアレル分析を行うとともに、組合せ能力を調査した。成熟期6日後の穂発芽率、成熟期1日後と成熟期6日後の平均穂発芽率の各ダイアレル分析では、以下の同様な結果が得られた。　分散分析では、相加効果 (ａ項) および優性効果 (ｂ項) は有意であったが、正逆交配間差 (ｃ､ｄ項) は有意でなかった。また、 (Vr、Wr) 図の直線回帰式の勾配は1に近く、Wr切片値は期待値に近く、しかも直線関係にあった。このため、母性効果やエピスタシスの影響はなく、単純な相加・優性モデルに適合した。遺伝分散は相加分散が優性分散よりやや大きかったが、環境分散は小さく、穂発芽耐性は相加効果と優性効果の両方により制御された。平均優性度は0.912～0.932で、不完全優性を示した。穂発芽耐性強は主に優性遺伝子により制御され、耐性が中～強の親品種は同じ優性耐性遺伝子を持つと推定された。広義の遺伝率は0.874～0.923と高かったが、狭義の遺伝率は0.517～0.564と中位であった。穂発芽率の一般組合せ能力および特定組合せ能力ともに有意であった。},
 pages = {123--136},
 title = {寒冷地小麦品種の穂発芽耐性に関するダイアレル分析},
 volume = {113},
 year = {2011},
 yomi = {ヨシカワ, リヨウ and ナカムラ, カズヒロ}
}