THE SEED VALUE OF FROST-DAMAGED WHEAT AS DETERMINED BY ITS COMMERCIAL GRADE, BUSHEL WEIGHT AND SEEDLING DEVELOPMENT

1961 ◽  
Vol 41 (1) ◽  
pp. 137-152
Author(s):  
J. D. Banting ◽  
Y. S. Wu ◽  
L. H. Shebeski

Following the occurrence of extensive frost damage in August of 1950 nearly 300 samples of bread wheat were collected from a widespread area of Saskatchewan. The adequacy of the commercial grading system in evaluating such grain for seed purposes was determined by comparing grade and bushel weight of each sample with its germination. Commercial grade provided a reasonably reliable index of frost damage in wheat.Composite samples, consisting of distinct types of frost damage, served as the basis for a method of predicting germination and emergence of individual samples. The method provided a satisfactory means of determining the value of frosted grain for seed.The effect of certain treatments on vigour of seedlings from frosted wheat was tested by means of the various composite types. Seed treatment with a mercuric fungic de was found to be practicable and shallow seeding into moisture was emphasized. Seed dressings with gamma BHC, at the rate recommended for wireworm control, were more injurious to frosted than sound wheat. Seedlings from frosted grain were more susceptible to common root rot, H. sativum, and drought than seedlings from sound grain. The slower growth rate of the former was doubtless a contributing factor.

1981 ◽  
Vol 3 (4) ◽  
pp. 239-243 ◽  
Author(s):  
P.R. Verma ◽  
S.H.F. Chinn ◽  
W.L. Crowle ◽  
D.T. Spurr ◽  
R.D. Tinline

Pathogens ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1526
Author(s):  
Yanjie Yi ◽  
Youtian Shan ◽  
Shifei Liu ◽  
Yanhui Yang ◽  
Yang Liu ◽  
...  

Common root rot, caused by Bipolaris sorokiniana, is one of the most prevalent diseases of wheat and has led to major declines in wheat yield and quality worldwide. Here, strain XZ34-1 was isolated from soil and identified as Bacillus amyloliquefaciens based on the morphological, physiological, biochemical characteristics and 16S rDNA sequence. Culture filtrate (CF) of strain XZ34-1 showed a high inhibition rate against B.sorokiniana and had a broad antifungal spectrum. It also remarkably inhibited the mycelial growth and spore germination of B. sorokiniana. In pot control experiments, the incidence and disease index of common root rot in wheat seedlings were decreased after treatment with CF, and the biological control efficacy was significant, up to 78.24%. Further studies showed XZ34-1 could produce antifungal bioactive substances and had the potential of promoting plant growth. Lipopeptide genes detection with PCR indicated that strain XZ34-1 may produce lipopeptides. Furthermore, activities of defense-related enzymes were enhanced in wheat seedlings after inoculation with B.sorokiniana and treatment with CF, which showed induced resistance could be produced in wheat to resist pathogens. These results reveal that strain XZ34-1 is a promising candidate for application as a biological control agent against B.sorokiniana.


1980 ◽  
Vol 60 (4) ◽  
pp. 1467-1472 ◽  
Author(s):  
S. H. F. CHINN ◽  
P. R. VERMA ◽  
D. T. SPURR

The effects of seed treatment with imazalil at 0.2 and 0.3 g a.i./kg seed on subcrown internode length and occurrence of coleoptile-node-tillers (CNT) was studied in four spring wheat cultivars at two locations in Saskatchewan. Without treatment, Cypress had the longest internodes followed in descending order by Glenlea, Neepawa, and Wascana. Generally, plants from imazalil-treated seed had significantly shorter subcrown internodes. Only a few plants from nontreated seed produced CNT and of these, many were soft or aborted, while the treated seed produced a number of CNT and many of these were firm tillers. The possible importance of these morphological changes in the reduction of common root rot, on drought resistance, cold hardiness, and yield is discussed.


1983 ◽  
Vol 5 (1) ◽  
pp. 49-53 ◽  
Author(s):  
L.J. Piening ◽  
L.J. Duczek ◽  
T.G. Atkinson ◽  
J.G.N. Davidson

2019 ◽  
Vol 101 (4) ◽  
pp. 1115-1125 ◽  
Author(s):  
Khadidja Allali ◽  
Yacine Goudjal ◽  
Miyada Zamoum ◽  
Khaoula Bouznada ◽  
Nasserdine Sabaou ◽  
...  

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