Associations between nitrogen harvest index and yield characteristics of oats

Euphytica ◽  
1990 ◽  
Vol 47 (1) ◽  
pp. 1-10 ◽  
Author(s):  
N. MD. Kairudin ◽  
K. J. Frey
Keyword(s):  
Harvest Index ◽  
Nitrogen Harvest Index ◽  
Nitrogen Harvest

DRY MATTER AND NITROGEN ACCUMULATION AND REDISTRIBUTION AND THEIR RELATIONSHIP TO GRAIN YIELD AND GRAIN PROTEIN IN WHEAT

1988 ◽  
Vol 68 (2) ◽  
pp. 311-322 ◽  
Author(s):  
PATRICK M. McMULLAN ◽  
PETER B. E. McVETTY ◽  
AILEEN A. URQUHART
Keyword(s):  
Grain Yield ◽  
Nitrogen Content ◽  
Harvest Index ◽  
Dry Matter ◽  
Triticum Aestivum L ◽  
Plant Nitrogen ◽  
Nitrogen Harvest Index ◽  
Grain Nitrogen ◽  
Highly Correlated ◽  
Nitrogen Harvest

Dry matter and nitrogen (nitrate and reduced) accumulation and redistribution in four different spring wheat (Triticum aestivum L.) genotypes grown at field density were studied on a plant part and whole plant basis over the growing season for 2 yr. The four cultivars displayed significant differences in plant part and total plant dry matter, harvest index, nitrogen content, nitrogen concentration, nitrogen harvest index and nitrogen translocated values at most sample dates in both years. Grain yield was highly correlated with dry matter accumulation (r = 0.88**), while grain nitrogen content was highly correlated with plant nitrogen content (r = 0.95**). Nitrogen harvest index and plant nitrogen content were correlated at anthesis (r = 0.61**), while, as a consequence of this, the amount of nitrogen translocated was highly correlated with plant nitrogen content at anthesis (r = 0.87**). Nitrogen harvest index and harvest index were highly correlated (r = 0.83**), indicating that they may be related processes. Since plant dry matter and plant nitrogen content were not significantly correlated, it should be possible to select simultaneously for these traits to effect grain yield and grain nitrogen content increases on a per-plant basis. Further research will have to be done to determine how these changes will relate to grain nitrogen concentrations and grain yield per unit area.Key words: Wheat, dry matter, nitrogen, yield, protein, Triticum aestivum L.

NITROGEN AND PHOSPHORUS UPTAKE, TRANSLOCATION, AND UTILIZATION EFFICIENCY OF WHEAT IN RELATION TO ENVIRONMENT AND CULTIVAR YIELD AND PROTEIN LEVELS

1990 ◽  
Vol 70 (4) ◽  
pp. 965-977 ◽  
Author(s):  
J. M. CLARKE ◽  
C. A. CAMPBELL ◽  
H. W. CUTFORTH ◽  
R. M. DePAUW ◽  
G. E. WINKLEMAN
Keyword(s):  
Grain Yield ◽  
Harvest Index ◽  
Dry Matter ◽  
P Uptake ◽  
Utilization Efficiency ◽  
Cultivar Differences ◽  
Yield Potential ◽  
Available Water ◽  
Nitrogen Harvest Index ◽  
Nitrogen Harvest

A field study was carried out in four environments to determine the effects of available water and cultivar on N and P uptake, translocation, and utilization efficiency of wheat (Triticum spp.) cultivars with varying grain yield potential and protein concentration. Two common wheat (T. aestivum L.) cultivars, Neepawa and HY320, and two durum (T. turgidum L. var. durum) cultivars, DT367 and Wakooma, were studied. HY320 and DT367 had higher grain yield potentials and lower protein concentrations than Neepawa and Wakooma. Total plant N and P uptake was proportional to available water, and was strongly associated with dry matter accumulation. From 67 to 102% of plant N and 64–100% of P present at harvest had been accumulated by anthesis. Postanthesis uptake of N and P was greater under moist than under dry environments. There were few cultivar differences in uptake of N or P, and any differences observed were related to variations in plant dry matter. Nitrogen harvest index ranged from 71 to 85% and P harvest index ranged from 81 to 93%. Both indices responded to environment in the same way as grain harvest index; there were no cultivar differences for either N or P harvest index. From 59 to 79% of N and 75 to 87% of P present in vegetative tissues at anthesis was translocated to the grain; translocation did not vary among cultivars. The efficiency of utilization of N and P in production of harvest biomass and grain was directly proportional to water availability and was greater in the high yield cultivars HY320 and DT367 than in Neepawa and Wakooma. There was no evidence that selection for N uptake, translocation, or utilization efficiency would be useful in wheat breeding.Key words: Triticum aestivum L., T. turgidum L. var. durum, nitrogen harvest index, phosphorus harvest index

Nitrogen accumulation, partitioning, and nitrogen harvest index increase during seed fill of field pea

2001 ◽  
Vol 71 (2) ◽  
pp. 87-99 ◽  
Author(s):  
Jérémie Lecoeur ◽  
Thomas R Sinclair
Keyword(s):  
Harvest Index ◽  
Field Pea ◽  
Nitrogen Accumulation ◽  
Nitrogen Harvest Index ◽  
Seed Fill ◽  
Nitrogen Harvest

Analysis of nitrogen partitioning in field pea resulting in linear increase in nitrogen harvest index

2001 ◽  
Vol 71 (3) ◽  
pp. 151-158 ◽  
Author(s):  
Jérémie Lecoeur ◽  
Thomas R Sinclair
Keyword(s):  
Harvest Index ◽  
Linear Increase ◽  
Field Pea ◽  
Nitrogen Partitioning ◽  
Nitrogen Harvest Index ◽  
Nitrogen Harvest

Effect of potassium on nitrogen fixation, nitrogen transport, and nitrogen harvest index of bean

1988 ◽  
Vol 11 (2) ◽  
pp. 175-188 ◽  
Author(s):  
R.J. Thomas ◽  
M. Hungria
Keyword(s):  
Nitrogen Fixation ◽  
Harvest Index ◽  
Nitrogen Transport ◽  
Nitrogen Harvest Index ◽  
Nitrogen Harvest

Nitrogen Harvest Index in Oats: Its Repeatability and Association with Adaptation 1

Crop Science ◽  
1986 ◽  
Vol 26 (3) ◽  
pp. 606-610 ◽  
Author(s):  
H. F. Rattunde ◽  
K. J. Frey
Keyword(s):  
Harvest Index ◽  
Nitrogen Harvest Index ◽  
Nitrogen Harvest

scholarly journals AMMI analysis of nitrogen harvest index in bread wheat

2010 ◽  
pp. 27-33
Author(s):  
Biljana Gorjanovic ◽  
Marija Kraljevic-Balalic
Keyword(s):  
Bread Wheat ◽  
Interaction Effect ◽  
Harvest Index ◽  
Nitrogen Levels ◽  
Gxe Interaction ◽  
Nitrogen Harvest Index ◽  
Stable Variety ◽  
Ammi Analysis ◽  
Genotype Interaction ◽  
Nitrogen Harvest

Nitrogen harvest index - NHI is a measure of efficiency of nitrogen translocation from vegetative organs to grain. The goal of this paper is to investigate variability and stability of nitrogen harvest index of twelve bread wheat genotypes, on three nitrogen levels. ANOVA showed that nitrogen harvest index was mostly under influence of the year x genotype interaction, year of investigation and genotype, and in the smallest amount of the nitrogen rate. Increasing doses of nitrogen did not lead to increased nitrogen harvest index. AMMI analysis showed that most genotypes differed in both the main effect and in GxE interaction. The highest stability i.e. the smallest interaction effect, was found in varieties Axis, Ilona, Sonata and Renan on N0 rate, and in varieties Malyska, Petrana, Axis and Evropa 90 on N100 rate. Cultivar Pobeda with the high average values for nitrogen harvest index, also had small interaction effect, i.e. it proved to be a stable variety.

scholarly journals Phenotypic variability of bread wheat genotypes for nitrogen harvest index

Genetika ◽  
2011 ◽  
Vol 43 (2) ◽  
pp. 419-426 ◽  
Author(s):  
Biljana Gorjanovic ◽  
Milka Brdar-Jokanovic ◽  
Marija Kraljevic-Balalic
Keyword(s):  
Nitrogen Content ◽  
Bread Wheat ◽  
Nitrogen Use Efficiency ◽  
Harvest Index ◽  
Mineral Fertilizers ◽  
Nitrogen Use ◽  
Wheat Genotypes ◽  
Nitrogen Harvest Index ◽  
Use Efficiency ◽  
Nitrogen Harvest

Nitrogen harvest index (grain nitrogen content over total nitrogen content ratio) is a measure of the efficiency of nitrogen translocation from the vegetative portions of the plant to the grain. It can be recommended as a selection criterion for nitrogen use efficiency improvement. The aim of this study was to investigate nitrogen harvest index in twelve bread wheat genotypes at three nitrogen levels and to classify genotypes according to their phenotypic similarity for the examined trait. The results of factorial ANOVA showed that nitrogen harvest index was influenced mostly by the year ? genotype interaction, year of investigation and genotype; and to the lowest extent by the applied nitrogen rate. Increasing nitrogen doses did not lead to the increased nitrogen harvest index. The calculated nitrogen harvest index values were the highest for wheat growing season 2004/05, and the smallest for the season 2006/07. The highest nitrogen harvest indices were calculated for cultivars Pobeda at the N0 rate and Zlatka at the N100 rate (0.93), and the lowest for cultivar Tamaro at the N0 rate (0.63). Analyzing the constructed dendogram, cultivars Pobeda and Renan at all three levels of nitrogen supply can be singled out as the genotypes with the highest, and cultivar Tamaro as the variety with the lowest harvest index value. The results of this study may be used in developing new high-yielding bread wheat cultivars with improved nitrogen use efficiency. Growing such cultivars would provide the savings in mineral fertilizers and minimize their possible harmful effect on environment.

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