Pentosan levels in Australian and North American feed wheats

1995 ◽  
Vol 46 (2) ◽  
pp. 389 ◽  
Author(s):  
M Wootton ◽  
L Acone ◽  
RBH Wills

Pentosan levels in 19 Australian and 12 North American wheats, predominantly of feed grade, were determined. Values were not significantly different between wheats from the two regions and ranged from 5.4 to 7.2% in the Australian and from 5.5 to 6.5% in the North American samples. Apparent metabolizable energy (AME) values for the Australian wheats, when used in poultry rations, showed a positive correlation with pentosan levels, which is counter to current thinking that suggests a negative relationship. These results imply that any difference between feed wheats from the two regions with respect to AME in poultry rations cannot be attributed to pentosan content.

Botanica ◽  
2018 ◽  
Vol 24 (2) ◽  
pp. 162-171 ◽  
Author(s):  
Artur Pliszko ◽  
Kinga Kostrakiewicz-Gierałt

Abstract Pliszko A., Kostrakiewicz-Gierałt K., 2018: Flower-visiting insects on Solidago ×niederederi (Asteraceae): an observation from a domestic garden. - Botanica, 24(2): 162-171 In this study, we focused on flower-visiting insects on Solidago ×niederederi, a natural hybrid between the North American S. canadensis and the European S. virgaurea. Based on four-day observation in a domestic garden, we evidenced a high number of Diptera visits on hybrid flowers, per each hour of the recording, and a positive correlation between the number of insect visits and the length, the width and the number of secondary branches of synflorescence and the number of capitula. Moreover, the number of insect visits positively correlated with the air temperature and negatively correlated with the wind speed. The increasing number of insect visits with the increasing size of synflorescences suggests that capitula of the hybrid arranged in bigger panicles might be more visible and smell stronger. However, a high number of insect visits on the flowers within the same synflorescence may promote the occurrence of geitonogamy. The involvement of various insects in pollination of S. ×niederederi needs to be studied in the future.


2006 ◽  
Vol 175 (4S) ◽  
pp. 511-512
Author(s):  
David G. McLeod ◽  
Ira Klimberg ◽  
Donald Gleason ◽  
Gerald Chodak ◽  
Thomas Morris ◽  
...  

2013 ◽  
Vol 74 (S 01) ◽  
Author(s):  
Pete Batra ◽  
Jivianne Lee ◽  
Samuel Barnett ◽  
Brent Senior ◽  
Michael Setzen ◽  
...  

2018 ◽  
pp. 52-69
Author(s):  
A. N. Oleinik

The article develops a transactional approach to studying science. Two concepts play a particularly important role: the institutional environment of science and scientific transaction. As an example, the North-American and Russian institutional environments of science are compared. It is shown that structures of scientific transactions (between peers, between the scholar and the academic administrator, between the professor and the student), transaction costs and the scope of academic freedom differ in these two cases. Transaction costs are non-zero in both cases, however. At the same time, it is hypothesized that a greater scope of academic freedom in the North American case may be a factor contributing to a higher scientific productivity.


Sign in / Sign up

Export Citation Format

Share Document