Wheat cultivar difference

Siranidou, E., Kang, Z., Buchenauer, H. Studies on symptom development, phenolic compounds and morphological defence responses in wheat cultivars differing in resistance to Fusarium head blight. J Phytopathol 2002 150 200-208. 

Wheat cultivars differ in the content of their thiol and disulfide groups (Table 15.40). This implies that the stabUity of a dough may be strongly influenced by a SH/SS exchange between a low molecular weight SH-peptide and gluten proteins. This also implies that a positive correlation... 

C. Chrislensen-Weniger, A. F. Groneman, and J. A. Van Veen, Associative fixation and root exudation of organic acids from wheat cultivars of different aluminium tolerance. Plant and Soil I39A67 (1992). 

There is very little information on cultivar differences with respect to (i) resistance to infection by P. verrucosum and (ii) OTA formation (Hokby et al., 1979 Axberg el al., 1997). The latter performed a laboratory experiment with six artificially inoculated cultivars of barley and three of wheat. After incubation for 23 weeks at approximately 19% moisture, the barley cultivars contained between 6 and 350 and the wheat cultivars between 25 and 890 ng OTA g 1 grain. In another study, Elmholt and Rasmussen (2005) reported that two of four cultivars of spring spelt from the same field contained 18 and 92 ng OTA g 1, respectively, while the other two contained less than 0.5 ng OTA g As differences in OTA neither correlated with moisture content at harvest nor with the level of P. verrucosum, they were probably caused by differences in cultivar sensitivity. This should, however, be further studied. 

Axberg K, Jansson G, Svensson G and Hult K (1997), Varietal differences in accumulation of ochratoxin Ain barley and wheat cultivars after inoculation of Penicillium verrucosum, Acta Agric. Scand., 47, 229-237. 

Earlier studies indicated that wheat cultivars responded differently to these organisms (15). If necessary, it should be possible to develop resistant varieties, especially When we know the mechanisms of plant uptake and mode of action of the toxin within the plant. One biological control may be the development of a TOX-negative inoculum for seed treatment. These bacteria may act like other rhizobacteria, which are known to increase plant growth, apparently by displacing nonbeneficial bacteria in the plant rhlzosphere (14). 

Foulkes, M.J., Sylvester-Bradley, R. and Scott, R.K. 1998. Evidence for differences between winter wheat cultivars in acquisition of soil mineral nitrogen and uptake and utilisation of applied fertiliser nitrogen. Journal of Agricultural Science 130 29-44. 

Ranhotra, G.S., Gelroth, J.A., Glaser, B.K. and Stallknecht, G.F. (1996b) Nutritional profile of three spelt wheat cultivars grown at five different locations. Cereal Chemistry 73, 533-535. 

Steenfeldt, S. (2001) The dietary effect of different wheat cultivars for broiler chickens. British Poultry Science 42, 595-609. 

DIBOA was also found in aqueous extracts of rye pollen [64] and it was identified as a component of root exudates from rye (0.7 - 25 pmol / kg fresh weight). However, DIBOA contents in rye exudates differ considerably depending on cultivars (cv. Forrajero Blaer 25 pmol / kg fr wt cv. Tetra Blaer 0.07 pmol / kg fr. wt.). Interestingly, wheat cultivars tested did exude neither DIBOA nor DIMBOA, although roots of the wheat cultivar Alifen contained similar amounts of DIBOA than present in roots of rye cultivars [175]. On the other hand, benzoxazinones have not only been isolated isolated from rye but also from wheat and com exudates [68,176]. Possibly, the developmental stage and plant fitness regulate the composition of root exudate constituents. 

Wieser H, Seilmeier W, Belitz HD (1994). Quantitative determination of gliadin subgroups from different wheat cultivars. J. Cereal Sci, 19 149-155. 

Mendichi, R., S. Fisichella, and A. Savarino. 2008. Molecular weight, size distribution and conformation of glutenin from different wheat cultivars by SEC-MALLS. Journal of Cereal Science 48 486 93. 

Lawrence, G. J., H. J. Moss, K. W. Shepherd, and C. W. Wrigley. 1987. Dough quality of biotypes of 11 Australian wheat cultivars that differ in high-molecular-weight glutenin subunit composition. Journal of Cereal Science 6 99-101. 

NADH levels and in vitro oxidation The amount of NADH in the leaf extracts of different wheat cultivars was determined according to Peine et al (11). In vitro NADH oxidation rates in the crude extracts from primary leaves of these cultivars were determined according to Mass (12). 

One of the most important questions is whether different resistant wheat isolines only react quantitatively or if there are qualitatively distinct mechanisms of resistance which lead to specific types of answers. To elucidate this, we measured net photosynthesis, chlorophyll content, and DCMU sensitive Hill activity (H O -> ferricyanide) of a susceptible, a moderately resistant, and a highly resistant near isogenic line of the wheat cultivar Prelude following stem rust inoculation. 

Figure 1.Content of chlorophyll a and b in three wheat cultivars depending on different combination of mineral nutrition...

In this way, the prolamines of wheat can be separated into C0-, a-, y-gliadins (Fig. 15.5), different varieties of wheat giving different patterns, e. g., the cultivars Clement and Maris Huntsman... 

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