Half sib selection for resistance to powdery mildew (Erysiphe graminis DC. f.sp. secalis Marchal) in rye populations

1988 ◽  
Vol 76 (4) ◽  
pp. 560-564
Author(s):  
V. Lind
Keyword(s):  
Powdery Mildew ◽  
Erysiphe Graminis ◽  
Selection For ◽  
Sib Selection

Changes in resistance to powdery mildew in a barley composite cross

1990 ◽  
Vol 68 (4) ◽  
pp. 916-919 ◽  
Author(s):  
M. Reinhold ◽  
M. E. Bjarko ◽  
D. C. Sands ◽  
H. E. Bockelman
Keyword(s):  
Hordeum Vulgare ◽  
Powdery Mildew ◽  
Selection Pressure ◽  
Recurrent Selection ◽  
Erysiphe Graminis ◽  
Response To Selection ◽  
Multiple Alleles ◽  
Negative Effect ◽  
Selection For ◽  
Representative Samples

The response of barley composite cross XLII to selection for resistance to powdery mildew was evaluated. Representative samples from eight cycles of recurrent selection were inoculated with two isolates of Erysiphe graminis f.sp. hordei. Frequencies of resistant plants were determined for each cycle. The resistance in composite cross XLII increased with selection. Increased selection pressure in 1986 resulted in a more rapid increase in resistance than in previous years. Multiple alleles occurring in the Ml-a locus did not seem to have a negative effect on the accumulation of resistance in composite cross XLII. Key words: Hordeum vulgare, barley, Erysiphe graminis f.sp. hordei, powdery mildew, response to selection, recurrent selection.

Cloning and Characterization of a Novel Wheat Glycoside Hydrolase Gene TaGlc2 Induced by Powdery Mildew Pathogen (Erysiphe graminis) Infection

2009 ◽  
Vol 35 (5) ◽  
pp. 786-794
Author(s):  
N PUDAKE Ramesh ◽  
Ming-Ming XIN ◽  
Yu-Jing YIN ◽  
Chao-Jie XIE ◽  
Zhong-Fu NI ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Glycoside Hydrolase ◽  
Erysiphe Graminis ◽  
Powdery Mildew Pathogen

Changes in sterol composition with ontogeny of Blumeria graminis conidia

2000 ◽  
Vol 78 (10) ◽  
pp. 1288-1293 ◽  
Author(s):  
Jérôme Muchembled ◽  
Anissa Lounès-Hadj Sahraoui ◽  
Anne Grandmougin-Ferjani ◽  
Michel Sancholle
Keyword(s):  
Powdery Mildew ◽  
Plant Pathogen ◽  
Total Sterol ◽  
Sterol Composition ◽  
Blumeria Graminis ◽  
Erysiphe Graminis ◽  
Qualitative And Quantitative ◽  
Wheat Powdery Mildew

The total sterol composition of conidia of the obligate plant pathogen Blumeria (= Erysiphe) graminis f.sp. tritici has been analysed as a function of their ontogeny during sporulation. Two main classes of sterols were characterized: 24-ethylsterols (24-ethylcholesta-5,22-dienol, 24-ethylcholesterol, and Δ5-avenasterol) and 24-methylsterols (24-methylenecholesterol and episterol). Our results show that sterol composition is greatly modified during ontogeny of B. graminis conidia both at the qualitative and quantitative levels. In particular, 24-methylsterols, e.g., 24-methylenecholesterol and episterol, are the major sterols in old conidia whereas 24-ethylsterols, e.g., 24-ethylcholesta-5,22-dienol, 24-ethylcholesterol, and Δ5-avenasterol, are the main sterols in young conidia.Key words: Erysiphe, wheat powdery mildew, sterols, ontogeny.

Direct and Correlated Response to Recurrent Full‐sib Selection for Prolificacy in Maize 1

Crop Science ◽  
1986 ◽  
Vol 26 (2) ◽  
pp. 275-278 ◽  
Author(s):  
Malkit Singh ◽  
A. S. Khehra ◽  
B. S. Dhillon
Keyword(s):  
Correlated Response ◽  
Selection For ◽  
Sib Selection
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