Increasing grain yield of oats by independent culling for harvest index and vegetative growth index or unit straw weight

Euphytica ◽  
1985 ◽  
Vol 34 (1) ◽  
pp. 33-41 ◽  
Author(s):  
K. Takeda ◽  
K. J. Frey
Keyword(s):  
Grain Yield ◽  
Vegetative Growth ◽  
Harvest Index ◽  
Growth Index ◽  
Independent Culling ◽  
Yield Of Oats ◽  
Vegetative Growth Index

Contribution of growth rate and harvest index to grain yield of oats (Avena sativa L.) following selfing and outcrossing of M1 plants

Euphytica ◽  
1979 ◽  
Vol 28 (2) ◽  
pp. 219-225 ◽  
Author(s):  
B. S. Jalani ◽  
K. J. Frey ◽  
T. B. Bailey
Keyword(s):  
Growth Rate ◽  
Grain Yield ◽  
Avena Sativa ◽  
Harvest Index ◽  
Yield Of Oats

scholarly journals Competitive Capacity of Native Species From the Carajás National Forest, Brazil

2018 ◽  
Vol 10 (11) ◽  
pp. 471
Author(s):  
Rafael G. Viana ◽  
Kaléo D. Pereira ◽  
Alexandre F. Castilho ◽  
Yanna K. S. Costa ◽  
Cintia H. Marega ◽  
...  
Keyword(s):  
Vegetative Growth ◽  
Native Species ◽  
Growth Index ◽  
National Forest ◽  
Density Index ◽  
Infestation Density ◽  
Physiological Quality ◽  
Urochloa Brizantha ◽  
Exotic Grass ◽  
Vegetative Growth Index

The present research had the objective to use the factor analysis in the evaluation of the competitive capacity of three native species from the Carajás National Forest in competition with different plant densities of the Urochloa brizantha grass. The experiment was conducted in a greenhouse and consisted in planting pots with the native species Bauhinia longipedicellata, Mimosa acutistipula and Solanum crinitum in competition with the exotic grass Urochloa brizantha. The exotic grass was established at densities ranging from 1 to 5 plants per pot, composing a 3 × 5 factorial arrangement with four replications that were delineated completely at random. Data were submitted to factor analysis for further analysis of variance and Tukey’s test at a 0.05 level of significance with the extracted factors. The effects of U. brizantha densities were evaluated by regression analysis. Out of the four extracted factors, three could be interpreted and were defined as vegetative growth index, infestation density index and physiological quality index. The Solanum crinitum species was slightly greater than the others in terms of vegetative growth rate and physiological quality. Generally speaking, native species maintain their vegetative growth in competitive conditions with up to two Urochloa brizantha plants; above that, the vegetative growth index tends to zero, while the infestation density index becomes positive.

Genetic control of vegetative growth index in oats (Avena spp.)

1983 ◽  
Vol 65 (3) ◽  
pp. 219-223 ◽  
Author(s):  
D. B. Helsel ◽  
K. J. Frey
Keyword(s):  
Genetic Control ◽  
Vegetative Growth ◽  
Growth Index ◽  
Vegetative Growth Index

scholarly journals Inheritance of Vegetative Growth Index and Related Traits in Pearl Millet

Crop Science ◽  
1995 ◽  
Vol 35 (2) ◽  
pp. 394 ◽  
Author(s):  
P. J. Lynch ◽  
E. W. Rattunde ◽  
K. J. Frey
Keyword(s):  
Pearl Millet ◽  
Vegetative Growth ◽  
Growth Index ◽  
Vegetative Growth Index

Selection for grain yield of oats via vegetative growth rates measured at anthesis and maturity

Euphytica ◽  
1987 ◽  
Vol 36 (1) ◽  
pp. 91-97 ◽  
Author(s):  
S. C. Gupta ◽  
K. J. Frey ◽  
R. K. Skrdla
Keyword(s):  
Grain Yield ◽  
Growth Rates ◽  
Vegetative Growth ◽  
Selection For ◽  
Yield Of Oats

Improving cultivated oats (A vena sativa L.) with alleles for vegetative growth index from A. sterilis L.

1984 ◽  
Vol 68 (3) ◽  
pp. 239-245 ◽  
Author(s):  
D. J. Cox ◽  
K. J. Frey
Keyword(s):  
Vegetative Growth ◽  
Growth Index ◽  
Vegetative Growth Index

Variability for harvest index and biomass in lentil (Lens culinaris Medik) varieties

2017 ◽  
Author(s):  
G. P. Dixit ◽  
A. Kumar ◽  
A. K. Parihar
Keyword(s):  
Grain Yield ◽  
Vegetative Growth ◽  
Harvest Index ◽  
Lens Culinaris ◽  
High Biomass ◽  
Cool Season ◽  
Vegetative Part ◽  
Food Legume ◽  
Improvement Programme ◽  
High Yielding Varieties

Lentil is an important cool season food legume of our nation and positions next just to chickpea. Pulses are generally known to produce higher vegetative part and less grain yield, consequently poor harvest index. Lentil is no exception to this, and produces excess vegetative growth and support lesser grains. Therefore, in present investigation attempt has been made to screen 36 lentil varieties for biomass and harvest index in macro-sperma and micro-sperma types. Ample amount of variability were recorded for both harvest index and biomass. 37.78-62.96 per cent and 3.38 g to 40.94 gm range was noticed for harvest index and biomass, respectively. At the end of present investigation, three lentil varieties viz. L 4147, IPL 406 and PL 234 were identified as high biomass and high harvest index varieties. These varieties may be used as an agronomic base in the future lentil improvement programme for evolving high yielding varieties.

Changes in mean, variance, and covariation among agronomic traits in successive backcross generations of interspecific matings (Avena sativa L. × A. sterilis L.) of oats

1985 ◽  
Vol 27 (4) ◽  
pp. 426-432 ◽  
Author(s):  
K. Takeda ◽  
T. B. Bailey ◽  
K. J. Frey
Keyword(s):  
Growth Rate ◽  
Grain Yield ◽  
Plant Height ◽  
Avena Sativa ◽  
Vegetative Growth ◽  
Harvest Index ◽  
Interspecific Mating ◽  
Straw Yield ◽  
Days To Heading ◽  
Genotypic Correlations

F2-derived lines from BC0 through BC5 of eight Avena sativa × A. sterilis matings were evaluated for days to heading, plant height, biomass, grain yield, straw yield, harvest index, vegetative growth rate, and unit straw weight. The, A. sativa lines were used as the recurrent parents in all backcrosses. The evaluation experiment was conducted in a randomized-block design with two replicates and microplots each sown with 30 seeds. For summary purposes, the means, variances, and genotypic correlations from the four matings with the same recurrent parent were pooled within each level of backcrossing. Regression analyses were used to describe the rates of change for genotypic variances and correlations as number of backcrosses increased. In all matings, the trait means regressed toward the recurrent parents as backcrossing progressed. Harvest index was controlled by additive gene action; earliness was partially dominant and tallness was completely dominant; heterobeltiosis occurred for high vegetative growth rate; straw yield and biomass showed either heterobeltiosis or complete dominance; and high grain yield was partially dominant. Unit straw weight showed a positive heterobeltiosis. Log genotypic variances decreased significantly over backcrosses for days to heading, straw yield, and harvest index, whereas for plant height and unit straw weight, the reductions were not significant. Regressions of genotypic correlations were significant for only 12 of 56 trait associations, and changes that did occur were of little consequence.Key words: backcross, interspecific mating, oats.

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