EFFECT OF TEMPERATURE, NITROGEN FERTILIZATION AND MOISTURE STRESS ON YIELD, YIELD COMPONENTS, PROTEIN CONTENT AND MOISTURE USE EFFICIENCY OF MANITOU SPRING WHEAT

1979 ◽  
Vol 59 (4) ◽  
pp. 963-974 ◽  
Author(s):  
C. A. CAMPBELL ◽  
H. R. DAVIDSON
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Yield Components ◽  
Seed Weight ◽  
Moisture Stress ◽  
Effect Of Temperature ◽  
Grain Protein ◽  
High Moisture ◽  
Use Efficiency ◽  
Number Of Seeds

The effects of temperature, nitrogen fertility (N), and moisture stress on the yield components, protein content and moisture use efficiency of Manitou wheat (Triticum aestivum L.) were determined under simulated irrigation in a 2 × 3 × 5 factorial experiment. Grain yield was directly related to and mainly influenced by N. Yield was directly related to the number of spikes (r = 0.71**), and the number of seeds/spike (r = 0.65**), and inversely related to average seed weight (r = −0.41**). Seed weight was also inversely related to the number of spikes and number of seeds per spike. At maturity, the number of spikes was directly and mainly affected by N. The number of spikelets per spike, seed set of primary and secondary florets, and seed weight were inversely related to, and mainly a function of, temperature. At high temperature and low NO3-N, low moisture stress was detrimental to several yield components where these conditions existed during a period critical to the development of the component. These poor responses were alleviated by high moisture stress or high rate of NO3-N fertilizer or both. Grain protein was mainly influenced by temperature to which it was directly related. Protein was increased by N at day/night temperatures of T22/12 °C, but was unaffected by N at T27/12 °C; it was also increased by high moisture stress applied between last leaf visible and anthesis. Grain protein was inversely related to grain yield at any given level of N. Covariance was used to isolate the true effect (i.e., corrected for yield effects) of the treatment variables on protein. In this experiment, N influenced protein only via its effect on grain yield. Moisture use efficiency for grain production was improved by all factors that increased grain yield (e.g., increased N, low temperature, or high moisture stress between tillering and last leaf visible). Efficiency was deleteriously affected by moisture stress between last leaf visible and anthesis.

scholarly journals Influence of Plant Competition and Pod Position on Seed Yield Components and Protein Content in Beans

1969 ◽  
Vol 62 (2) ◽  
pp. 186-190
Author(s):  
Augusto Tulmann Neto ◽  
F. K. S. Koo ◽  
J. Cuevas-Ruíz
Keyword(s):  
Protein Content ◽  
Yield Components ◽  
Seed Weight ◽  
Position Effect ◽  
Plant Competition ◽  
Phaseolus Vulgaris L ◽  
Plant Variety ◽  
Seed Yield Components ◽  
Lower Protein ◽  
Number Of Seeds

The influence of plant competition and pod position on yield components and protein content was studied in beans (Phaseolus vulgaris L.). Plants grown under conditions of relaxed competition were found to increase yield, number of pods/plant, and weight of 100 seeds. However, number of seeds/pod and protein percentage content were not affected by competition. In the study of pod position effect, it was observed that seed weight was affected by pod position somewhat differently in two bean varieties, although both had the lighter seeds in the upper pods. However, the protein content was independent of pod position on the plant. Variety Carioca had heavier seed than variety Jamapa, but the former had lower protein content than the latter.

scholarly journals Seeding rate and genotype effects on agronomic performance and grain protein content of durum wheat (Triticum turgidum L. Durum) in south-eastern Ethiopia

2013 ◽  
Vol 13 (58) ◽  
pp. 7693-7710
Author(s):  
Haile D ◽  
◽  
R Nigussie-Dechassa ◽  
W Abdo ◽  
F Girma ◽  
...  
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Protein Content ◽  
Agronomic Traits ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Agronomic Performance ◽  
Seeding Rate ◽  
Eastern Ethiopia ◽  
Number Of Seeds

The use of optimum seeding rate for the genotype may enhance productivity and grain protein content of durum wheat. Therefore, an experiment was conducted at two locations in south-eastern Ethiopia during the main cropping season of 2008 with the objective of elucidating the effects of seeding rate and genotype on agronomic performance and grain protein content of the crop. The experiment consisted of factorial arrangements of four improved durum wheat genotypes and five seeding rates, which were laid out as a randomized complete block design with three replicates. Seeding rates significantly influenced agronomic performances including number of fertile spikes m-2, plant height, number of seeds spike-1, and grain yield. Number of fertile spikes m-2 was increased proportionally with the seeding rate and the highest number (382 spikes m-2) was recorded in the highest seeding rate of 200kg ha-1. Inversely, the highest number of kernels spike-1 (29.8) was at the seeding rate of 100 kg ha-1. The highest grain yield (4341 kg ha-1) was obtained in response to seeding rate of 175 kg ha-1, which was in statistical parity with the yield obtained at the seeding rate of 150 kg ha-1. However, grain protein content was not influenced by the seeding rates. There were significant (P ≤ 0.05) variations among the genotypes for all the agronomic traits measured. The largest number of fertile spikes m-2 was recorded for the genotypes Oda (360 spikes m-2) and Bakalcha (345 spikes m-2). Genotype Illani produced the longest spike (6.9 cm). Oda and Illani produced the highest numbers of seeds spike-1, 38.8 and 36.9, respectively. The number of fertile spikes m-2, number of seeds spike-2 and kernels weight significantly contributed grain yield. The genotypes had exhibited less variation for grain protein content. Except for grain yield and harvest index, seeding rate x genotype interaction had no significant effect on other agronomic traits. Highest grain yields of 4938 kg ha-1 and 4774 kg ha1 were obtained from genotypes Ejersa and Bakalcha when sown at the seeding rate of 150 kg ha-1 and 175 kg ha-1, respectively. Grain protein response was significantly influenced by the interaction effect in which genotype Oda had the highest (12.9%) and lowest (10.5%) protein contents at the highest (200 kg ha-1) and lowest (100 kg ha-1) seeding rates, respectively.

scholarly journals Statistical Modeling of Phenotypic Plasticity under Abiotic Stress in Triticum durum L. and Triticum aestivum L. Genotypes

Agronomy ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 139 ◽  
Author(s):  
Abdullah Jaradat
Keyword(s):  
Abiotic Stress ◽  
Phenotypic Plasticity ◽  
Population Density ◽  
Grain Yield ◽  
Protein Content ◽  
Bread Wheat ◽  
Abiotic Stresses ◽  
Yield Components ◽  
Grain Protein Content ◽  
Grain Protein

Future challenges to the role of durum and bread wheat in global food security will be shaped by their potential to produce larger yields and better nutritional quality, while increasingly adapting to multiple biotic and abiotic stresses in the view of global climate change. There is a dearth of information on comparative assessment of phenotypic plasticity in both wheat species under long-term multiple abiotic stresses. Phenotypic plasticities of two durum and bread wheat genotypes were assessed under increasing abiotic and edaphic stresses for six years. Combinations of normal and reduced length of growing season and population density, with or without rotation, generated increasing levels of competition for resources and impacted phenotypic plasticity of several plant and yield attributes, including protein and micronutrients contents. All the phenotypic plasticity (PPs) estimates, except for the C:N ratio in both genotypes and grain protein content in T. aestivum genotype, were impacted by abiotic stresses during the second stress phase (PS II) compared with the first (PS I); whereas, covariate effects were limited to a few PPs (e.g., biomass, population density, fertile tillers, grain yield, and grain protein content). Discrimination between factor levels decreased from abiotic phases > growth stages > stress treatments and provided selection criteria of trait combinations that can be positively resilient under abiotic stress (e.g., spike harvest and fertility indices combined with biomass and grain yield in both genotypes). Validation and confirmatory factor models and multiway cluster analyses revealed major differences in phenotypic plasticities between wheat genotypes that can be attributed to differences in ploidy level, length of domestication history, or constitutive differences in resources allocation. Discriminant analyses helped to identify genotypic differences or similarities in the level of trait decoupling in relation to the strength of their correlation and heritability estimates. This information is useful in targeted improvement of traits directly contributing to micronutrient densities, yield components, and yield. New wheat ideotype(s) can be designed for larger grain yield potential under abiotic stress by manipulating yield components that affect kernels m−2 (e.g., number of tillers, number of florets per spikelet, and eventually spike fertility and harvest indices) without impacting nutrient densities and kernel weight, thus raising harvest index beyond its current maximum.

scholarly journals Improvement effect of nitrogen fertilizer and plant density on wheat (Triticum aestivum L.) seed deterioration and yield

2017 ◽  
pp. 899 ◽  
Author(s):  
Hedieh Mosanaei ◽  
Hossein AjamNorozi ◽  
Mohammad Reza Dadashi ◽  
Abolfazleh Faraji ◽  
Mohammad Pessarakli
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Plant Density ◽  
Starch Content ◽  
Negative Effects ◽  
Seed Deterioration ◽  
Second Year ◽  
Number Of Seeds

In order to study the effect of seed deterioration, plant density and nitrogen fertilizer application on yield, yield components and somequalitative traits of wheat, a field experiment was conducted in Golestan province of Iran, as split factorial in the randomized completeblock design, with four replications in two growing seasons, 2014-2015 and 2015-2016. The experimental treatments included seedquality at 4 levels (control, 15, 30, and 45 hours of accelerated deterioration), plant density at two levels (350 and 420 plants/m) and nitrogen consumption at 3 levels (recommended rate, 15 and 30 percentages higher than the recommended rate, i.e., 125, 143.75, and162.5 kg N fertilizer ha, respectively). All quantitative traits (plant height, spike length, number of seeds per spike, number of spikeletsper spike, weight of 1000 seed, grain yield, straw yield, biological yield and harvest index) and quality traits (yield and protein content,nitrogen content, yield and starch content) were significantly different in different years. Application of recommended rate of nitrogenfertilizer in the first and the second year resulted in the highest average of number of seeds per spike and spike length. The highestgrain yield was achieved in the recommended and 30% higher than the recommended application rate of nitrogen fertilizer (4061.9 and4166.3 kg/ha, respectively) in the second year. Seed deterioration caused a significant reduction in yield and the yield components, sothe highest level of seed deteriorations in the first and the second years decreased 34.11 and 22.63% of the grain yield compared tothe control treatment. The highest protein content was achieved in the second year with the application of nitrogen 30% higher than therecommended rate (with a mean of 623.6 kg/ha), which increased by about 23% compared to the overall average. Seed deteriorationreduced the starch content, so that the highest mean was in non-deterioration in the second year (68.13%), which increased by 10%compared with that of the overall average. The lowest starch content was achieved at the highest level of deterioration (45 hours) in thefirst year (55.63%). In general, the results indicated that seed deterioration had negative effects on quantitative and some qualitativetraits, but the application of more nitrogen fertilizer and higher plant density reduced the negative effects of deterioration and improvedgrain yield and quality.

scholarly journals Combining ability and heterosis in common bean cultivars

2008 ◽  
Vol 43 (9) ◽  
pp. 1143-1150 ◽  
Author(s):  
Maria Celeste Gonçalves-Vidigal ◽  
Lucas Silvério ◽  
Haroldo Tavares Elias ◽  
Pedro Soares Vidigal Filho ◽  
Marcus Vinícius Kvitschal ◽  
...  
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Plant Height ◽  
Combining Ability ◽  
Yield Components ◽  
Seed Weight ◽  
Genetic Effects ◽  
Breeding Programs ◽  
Combining Abilities ◽  
Number Of Seeds

The objective of this work was to determine the combining ability and heterosis, for productivity and yield components, in diallel hybrids derived from crossings between BRSMG-Talismã, IPR Uirapuru, FT Soberano, BRS Campeiro, IAC Tybatã, and IPR Juriti parent cultivars. Fifteen hybrids were generated from diallel crosses, excluding reciprocals. The general and specific combining abilities were significant for plant height, number of pods per plant, number of seeds per plant, number of seeds per pod, 50-seed weight, and grain yield, indicating the occurrence of both additive and nonadditive genetic effects. The best strategy to be adopted is the use of BRS Campeiro, FT Soberano and BRSMG-Talismã cultivars in common bean breeding programs involving selection. The most promising combinations were 'IPR Uirapuru' x 'IAC Tybatã', 'IPR Uirapuru' x 'FT Soberano', 'BRS Campeiro' x 'IPR Juriti', and 'BRS Campeiro' x 'IAC Tybatã'. The parents of these hybrids presented high estimates of specific combining abilities. Hybridization of cultivars belonging to distinguished commercial groups propitiates higher heterosis values in the segregant population.

scholarly journals OsASN1 Overexpression in Rice Increases Grain Protein Content and Yield under Nitrogen-Limiting Conditions

2020 ◽  
Vol 61 (7) ◽  
pp. 1309-1320 ◽  
Author(s):  
Sichul Lee ◽  
Joonheum Park ◽  
Jinwon Lee ◽  
Dongjin Shin ◽  
Anne Marmagne ◽  
...  
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Oryza Sativa L ◽  
Grain Protein Content ◽  
Yield Reduction ◽  
Limiting Factor ◽  
Grain Protein ◽  
Knockout Mutant ◽  
Use Efficiency ◽  
Global Population

Abstract Nitrogen (N) is a major limiting factor affecting crop yield in unfertilized soil. Thus, cultivars with a high N use efficiency (NUE) and good grain protein content (GPC) are needed to fulfill the growing food demand and to reduce environmental burden. This is especially true for rice (Oryza sativa L.) that is cultivated with a high input of N fertilizer and is a primary staple food crop for more than half of the global population. Here, we report that rice asparagine synthetase 1 (OsASN1) is required for grain yield and grain protein contents under both N-sufficient (conventional paddy fields) and N-limiting conditions from analyses of knockout mutant plants. In addition, we show that overexpression (OX) of OsASN1 results in better nitrogen uptake and assimilation, and increased tolerance to N limitation at the seedling stage. Under field conditions, the OsASN1 OX rice plants produced grains with increased N and protein contents without yield reduction compared to wild-type (WT) rice. Under N-limited conditions, the OX plants displayed increased grain yield and protein content with enhanced photosynthetic activity compared to WT rice. Thus, OsASN1 can be an effective target gene for the development of rice cultivars with higher grain protein content, NUE, and grain yield under N-limiting conditions.

Effects of Ridge Mulching with Side-dressing on Grain Yield, Protein Content and Water Use Efficiency in Dryland Wheat

2017 ◽  
Vol 43 (6) ◽  
pp. 899 ◽  
Author(s):  
Ming HUANG ◽  
Zhao-Hui WANG ◽  
Lai-Chao LUO ◽  
Sen WANG ◽  
Ming BAO ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Protein Content ◽  
Water Use ◽  
Use Efficiency

Variability for grain protein content among germplasm accessions and advanced breeding lines in dolichos bean (Lablab purpureus L. Sweet var. Lignosus Prain)

2018 ◽  
Vol 17 (03) ◽  
pp. 289-292
Author(s):  
Pranesh ◽  
S. Ramesh
Keyword(s):  
Grain Yield ◽  
Protein Content ◽  
Protein Energy Malnutrition ◽  
Target Population ◽  
Grain Protein Content ◽  
Grain Protein ◽  
Lablab Purpureus ◽  
Breeding Lines ◽  
Protein Rich ◽  
Germplasm Accessions

AbstractProtein energy malnutrition (PEM) is prevalent in south-east Asian countries including India. Breeding and introduction of grain protein-rich varieties of legumes such as dolichos bean is considered as cost-effective approach to combat PEM. Exploitation of genetic variability within germplasm accessions (GAs) and/or breeding populations is the short-term strategy for identification and delivery of protein-rich dolichos bean cultivars to cater to the immediate needs of the farmers and target population. A set of 118 dolichos bean genotypes consisting of 96 GAs and 20 advanced breeding lines (ABLs) and two released varieties (RVs) was field evaluated in augmented deign for dry grain yield per plant and their grain protein contents were estimated. The grain protein content among the genotypes ranged from 18.82 to 24.5% with a mean of 21.73%. The magnitude of estimates of absolute range, standardized range, and phenotypic coefficient of variation (PCV) for grain protein content was higher among GAs than those among ABLs + RVs. However, average grain protein contents of GAs were comparable to those of ABLs + RVs. Nearly 50% of the genotypes (mostly GAs) had significantly higher grain protein content than those of RVs, HA 3 and HA 4. The grain protein contents of the genotypes were poorly correlated with grain yield per plant. These results are discussed in relation to strategies to breed grain protein-rich dolichos bean cultivars.

scholarly journals Evaluation of Urea Super Granule as a Source of Nitrogen in Transplant Aman Rice

2014 ◽  
Vol 24 (1-2) ◽  
pp. 29-37 ◽  
Author(s):  
TA Qurashi ◽  
MA Salam ◽  
M Jannat ◽  
MG Rabbani
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Block Design ◽  
Prilled Urea ◽  
Randomized Complete Block Design ◽  
Yield And Yield Components ◽  
Use Efficiency ◽  
Experimental Treatments ◽  
N Management ◽  
1000 Grain Weight

An experiment was carried out at Bangladesh Agricultural University, Mymensingh to evaluate the effect of urea super granule (USG) as a source of nitrogen on the yield and yield components of transplant Aman rice cv. BRRI dhan39, BRRI dhan46 and BINA dhan7. Five levels of N (viz., 0, 60, 120 kg ha-1 as prilled urea and 60 and 120 kg ha-1 as USG) were taken as experimental treatments. The experiment was laid out in a randomized complete block design with three replications. Plant height, effective tillers hill-1, grains panicle-1 and grain yield varied significantly due to different cultivars. All the yield and yield components except 1000-grain weight were influenced significantly by the levels of nitrogen fertilizer. The highest grain yield (4.82 t ha-1) was recorded in BINA dhan7 and the lowest one (4.30 t ha-1) was recorded in BRRI dhan39. Nitrogen @ 120 kg ha-1 as USG performed the best among the treatments in respect of yield and yield components of rice. The highest grain yield (5.46t ha-1) was obtained from BINA dhan7 with 120 kg N ha-1 as USG which was statistically identical with 60 kg N ha-1 as USG. A considerable amount (31.25%) of prilled urea (PU) nitrogen could be saved by using USG. It may be concluded that USG could be used as N management to achieve better nitrogen use efficiency in reducing N loss than the PU.DOI: http://dx.doi.org/10.3329/pa.v24i1-2.19095 Progress. Agric. 24(1&2): 29 - 37, 2013

Sign in / Sign up

Export Citation Format

Share Document