Author Kanatani, Ryoichi| Takeda, Kazuyoshi|
Published Date 1991-03
Publication Title 農学研究
Volume volume62
Issue issue3
Content Type Departmental Bulletin Paper
Author Sato, Kazuhiro| Takeda, Kazuyoshi|
Published Date 1991-03
Publication Title 農学研究
Volume volume62
Issue issue3
Content Type Departmental Bulletin Paper
Author Sato, Kazuhiro| Takeda, Kazuyoshi|
Published Date 1990-03
Publication Title 農学研究
Volume volume62
Issue issue2
Content Type Departmental Bulletin Paper
Author Takeda, Kazuyoshi| Saito, Wataru|
Published Date 1987-03
Publication Title 農学研究
Volume volume61
Issue issue3
Content Type Departmental Bulletin Paper
Author Takeda, Kazuyoshi| Heta, Hideo| Fukuyama, Toshinori|
Published Date 1986-03
Publication Title 農学研究
Volume volume61
Issue issue2
Content Type Departmental Bulletin Paper
Author Wu, Jiri| Takeda, Kazuyoshi|
Published Date 1997
Publication Title 岡山大学資源生物科学研究所報告
Volume volume5
Issue issue1
Content Type Departmental Bulletin Paper
Author Chang, Cheng Lin| Takeda, Shin| Takeda, Kazuyoshi|
Published Date 1997
Publication Title 岡山大学資源生物科学研究所報告
Volume volume5
Issue issue1
Content Type Departmental Bulletin Paper
Author Iwasa, Tomohiko| Heta, Hideo| Takeda, Kazuyoshi|
Published Date 1997
Publication Title 岡山大学資源生物科学研究所報告
Volume volume5
Issue issue1
Content Type Departmental Bulletin Paper
Author Kanatani, Ryoichi| Takeda, Kazuyoshi|
Published Date 1996
Publication Title 岡山大学資源生物科学研究所報告
Volume volume4
Issue issue1
Content Type Departmental Bulletin Paper
Author Iwasa, Tomohiko| Takahashi, Hidekazu| Takeda, Kazuyoshi|
Published Date 1999
Publication Title 岡山大学資源生物科学研究所報告
Volume volume6
Issue issue1
Content Type Departmental Bulletin Paper
Author Mano, Yoshiro| Takeda, Kazuyoshi|
Published Date 1996
Publication Title 岡山大学資源生物科学研究所報告
Volume volume4
Issue issue1
Content Type Departmental Bulletin Paper
Author Takeda, Kazuyoshi| Chang, Cheng Lin|
Published Date 1998
Publication Title 岡山大学資源生物科学研究所報告
Volume volume5
Issue issue2
Content Type Departmental Bulletin Paper
Author Kanatani, Ryouichi| Takahashi, Hidekazu| Takeda, Kazuyoshi|
Published Date 1998
Publication Title 岡山大学資源生物科学研究所報告
Volume volume5
Issue issue2
Content Type Departmental Bulletin Paper
Author Mano, Yoshiro| Takeda, Kazuyoshi|
Published Date 1995
Publication Title 岡山大学資源生物科学研究所報告
Volume volume3
Issue issue1
Content Type Departmental Bulletin Paper
Author Wu, Jiri| Takeda, Kazuyoshi|
Published Date 1995
Publication Title 岡山大学資源生物科学研究所報告
Volume volume3
Issue issue1
Content Type Departmental Bulletin Paper
Author Rikiishi, Kazuhide| Takeda, Kazuyoshi| Yasuda, Shozo|
Published Date 1995
Publication Title 岡山大学資源生物科学研究所報告
Volume volume3
Issue issue1
Content Type Departmental Bulletin Paper
Title Alternative 大麦網斑病抵抗性の選抜効果
FullText URL 003_001_043_053.pdf
Author Sato, Kazuhiro| Takeda, Kazuyoshi|
Abstract Selection effectiveness for the resistance to net blotch was estimated by using two sets of F2 and F3 populations derived from the crosses between resistant and susceptible parents. In every F2 and F3 population, disease ratings showed a continuous distribution. As many F3 lines with intermediate resistance had a smaller variance and homozygous genotype, the resistance might be controlled by a few genes. The heritabilities of the disease rating were estimated by correlation coefficients and regression coefficients between each F2 plant and the descended F3 lines. Another estimate for heritability was calculated by the selection differential in the F2 plants and genetic gain in the F3 lines. Despite the different level of resistance in the resistant parents of the two crosses, the three kinds of heritabilities estimated were similar and ranged from 0.6 to 0.8. Because of the fewer number of genes controlling the disease resistance and the higher heritabilities, selection in a early generation may be effective for net blotch resistance in barlcy.
Abstract Alternative 抵抗性と罹病性の両親間の交雑に由来する2組のF2集団とその後代のF3系統を用いて、大麦網斑病における抵抗性の選抜効果を推定した。F3系統の平均値と分散から、病斑指数の分散が小さく、すでに固定した系統が多数存在したので、抵抗性は少数の遺伝子に支配されているとみられた。F2個体とF3系統間の親子相関、親子回帰およびF2の選抜差とF3系統の遺伝獲得量から遺伝率を推定したところ、2組の交雑組合せで抵抗性親の病斑指数は異なっていたにもかかわらず、3種類の遺伝率の推定値はいずれも0.6~0.8の値を示した。遺伝率が高く、しかも関与する遺伝子数であるため、雑種集団で連続変異を示す場合の大麦網斑病抵抗性の選抜はF2からでも効果的とみられた。
Keywords Net blotch Pyrenophora teres Selection Barley Disease resistance
Publication Title 岡山大学資源生物科学研究所報告
Published Date 1995
Volume volume3
Issue issue1
Start Page 43
End Page 53
ISSN 0916-930X
language 英語
File Version publisher
NAID 120004537480
Author Hou, Fwu-Fenn| Thseng, Fu-Sheng| Wu, Shu-Tu| Takeda, Kazuyoshi|
Published Date 1995
Publication Title 岡山大学資源生物科学研究所報告
Volume volume3
Issue issue1
Content Type Departmental Bulletin Paper
Author Heta, Hideo| Takeda, Kazuyoshi|
Published Date 1995
Publication Title 岡山大学資源生物科学研究所報告
Volume volume3
Issue issue1
Content Type Departmental Bulletin Paper
Title Alternative Comparison of Resistance to Powdery Mildew between Wild Barley (Hordeum spontaneum C. Koch)
FullText URL 002_001_111_122.pdf
Author Fukuyama, Toshinori| Heta, Hideo| Sato, Kazuhiro| Takeda, Kazuyoshi|
Abstract A total of 162 strains of wild barley, Hordeum spontaneum C. Koch originating from Iran, Iraq, Turkey and Central Asia, were tested for resistance to powdery mildew. Then, the variation of resistance was compared with that of 145 local varieties of cultivated barley (Hordeum vulgare L.) originating from the same region of the wild barley collection. Ten different isolates of the parasite with Japanese origin were separately inoculated onto the first leaves of the host plants. The infection types were classified into the following: i, immunelike; R, highly resistant; M, moderately resistant; and S, highly susceptible. Resistant strains with i, R or M infection type were more frequent among wild barleys as compared with the cultivated forms. It is noteworthy that among these three resistant reactions,the M type was most frequent in the wild barley. To compare the degree of resistance to a total of 10 isolates, the resistance score was calculated in each of the wild and cultivated strains as the following: Scores 1,2,3 and 4 were given to the infection types of i, R, M and S, respectively, and the mean score for 10 isolates was calculated. Wild barley showed significantly low resistance scores as compared with those of cultivated barley. This was also confirmed by the cluster analysis; the cluster with more resistance to 10 isolates consisted of many strains of wild barley. Next, the resistance of wild barley was characterized by their broader effective ranges to different isolates. According to the x2 test for independence of reactions to two different isolates, the resistant factor(s) involved in wild barley was confirmed to be rather non-specific to the parasite. It was concluded that H. spontaneum may be useful genetic resources for the breeding of resistance to powdery mildew as well as local varieties.
Abstract Alternative 病原菌の変異による抵抗性品種の罹病化は耐病性育種の大きな問題である。永続性のある抵抗性品種を育成するための遺伝資源を得る目的で、病原菌と長期間共進化してきた野生オオムギ(Hordeum spontaneum)と在来種のうどんこ病抵抗性を評価した。材料はH.spontaneum162系統ならびにこれらと産地を同じくする在来品種145系統である。接種には日本のうどんこ病菌H1,h4,h9の他に人為的交雑によって育成した7菌株を加えた10菌株を用いた。第1葉の反応を免疫的抵抗性(i)、高度抵抗性(R)、中度抵抗性(M)および罹病性(S)に分類した。その結果、以下のことが明らかとなった。1)抵抗性(i,R,M)を示す系統の頻度は大部分の菌株において野生種の方が高かった。2)野生種の抵抗性は在来種よりも多数の菌株に対して有効であった。3)クラスター分析の結果、野生種の大部分が同一のグループに属し、在来品種は多くのサブグループに属することが明らかにされた。4)これらの事実から、オオムギの野生種はうどんこ病抵抗性育種の遺伝資源として在来種と同等あるいはそれ以上に有用であるとみられた。
Keywords Hordeum spontaneum Barley Powdery mildew Resistance
Publication Title 岡山大学資源生物科学研究所報告
Published Date 1994
Volume volume2
Issue issue1
Start Page 111
End Page 122
ISSN 0916-930X
language 日本語
File Version publisher
NAID 120002313607