scholarly journals Variability in seed germination of barley cultivars (Hordeum vulgare L.) grown under different nitrogen application rates

2019 ◽  
Vol 24 (47) ◽  
pp. 61-69
Author(s):  
Desimir Knežević ◽  
Aleksandar Paunović ◽  
Danijela Kondić ◽  
Adriana Radosavac ◽  
Artiona Laze ◽  
...  
1986 ◽  
Vol 64 (11) ◽  
pp. 2769-2773
Author(s):  
Bernard B. Baum

A brief historical sketch of the classification of barley (Hordeum vulgare L.) cultivars is presented along with reference to key reviews on this subject. Characters, utilized in the comprehensive study on the barley cultivars of North America by Aberg and Wiebe (U.S. Department of Agriculture Technical Bulletin 942), were subjected to a series of phenetic character analyses using an information theory model and a spatial autocorrelation model. The ranking of the 48 characters in order of their importance (for classification and identification purposes) from the character analysis by information theory was compared with the previous rating of characters made by Aberg and Wiebe and was found to differ significantly. Numerous trials of character analysis by spatial autocorrelation using various Minkowski distances, setting various values among three parameters, never yielded results comparable with those obtained by Aberg and Wiebe. Among those trials, a few combinations of values for the three parameters (X, Y, and Z) yielded results comparable with those obtained with character analysis by information theory. Those same combinations of values were found by Estabrook and Gates (Taxon, 33: 13–25) in their study of Banisteriopsis in 1984, where they also developed the method of character analysis by spatial autocorrelation. Kernel weight was found to be the most important character.


2002 ◽  
Vol 2 (1-2) ◽  
pp. 28-39 ◽  
Author(s):  
E. Potokina ◽  
N. Sreenivasulu ◽  
L. Altschmied ◽  
W. Michalek ◽  
A. Graner

1986 ◽  
Vol 64 (9) ◽  
pp. 2107-2112 ◽  
Author(s):  
L. S. Kott ◽  
S. Flack ◽  
K. J. Kasha

Cells of haploid barley embryos (Hordeum vulgare L. 'Bruce', 'Perth', and 'Klages') and callus cells originating from embryos were cytophotometrically examined to determine the ploidy level. Specific embryo tissues regularly exhibited predictable ploidies and smaller embryos had a higher percentage of haploid cells than larger embryos of the same age. The predominantly haploid cells of the scutellar epidermis of the embryo initiated callus which generally, at least initially, was haploid. Monitoring of the ploidy evolution of these haploid calli showed that over a 6-month period each line exhibited its own unique rate of polyploidization, although lines of the same cultivar showed similar trends. Accumulation of cells at the diploid level was often a characteristic of these cultures.


LWT ◽  
2020 ◽  
Vol 133 ◽  
pp. 110085
Author(s):  
Guoqiang Zhang ◽  
Kun Yang ◽  
Wenhua Xue ◽  
Xingquan Zeng ◽  
Qijun Xu ◽  
...  

2013 ◽  
Vol 44 (4) ◽  
pp. 203-208
Author(s):  
O. Sedlář ◽  
J. Balík ◽  
L. Peklová ◽  
K. Kubešová

1986 ◽  
Vol 66 (2) ◽  
pp. 257-280 ◽  
Author(s):  
E. A. HOCKETT

The number of adventitious roots of two- and six-row barleys (Hordeum vulgare L.) grown under irrigation at Bozeman, Montana in 1970 and 1971, was related to yield and other agronomic characteristics. Adventitious roots were counted shortly before heading and at maturity and correlated with 15 agronomic characteristics. Adventitious root number was not correlated with yield of barley, except for two out of six cases in two-row barley. Roots per tiller, per plant and per square metre were all positively correlated with each other. The number of kernels per spike increased as roots per tiller increased but decreased with a high number of tillers per plant. Kernel plumpness and numbers of tillers were negatively correlated in two-row barley, but not in six-row barley. Cultivars differed significantly in yield and adventitious root number. Six-row barley had more roots per tiller but fewer tillers per square metre than two-row barley. Roots per tiller and roots per square metre measurements had the best repeatability between years for six-row barley, but no root measurements were consistent over years for the two-row type. Tillers per plant measurements for both two-row and six-row barleys and tillers per square metre for just two-row barley were consistent over years. Tiller and root number interact and are usually positively related. The genetic variation for root number shown here could be used in crosses for selection of superior genotypes.Key words: Barley, Hordeum vulgare, adventitious roots, subcrown internode, yield components, seeding rate


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