Barley Phenology: Physiological and Molecular Mechanisms for Heading Date and Modelling of Genotype‐Environment‐ Management Interactions

Ibrahim, Ahmed N.; Harrison, Matthew T.; Meinke, Holger; MeixueZhou,

doi:10.5772/64827

Cited by 3 publications

(3 citation statements)

References 123 publications

(273 reference statements)

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“…Salinity stress might affect spikelet initiation that can seriously influence quality and grain yield through modeling heading date. In recent years, heading in small grain cereals is an important stage that has been extensively studied and considered as highly related to environmental adaptation (Ibrahim et al 2016;Alqudah & Schnurbusch 2017). For these reasons, ongoing breeding programs target different tolerance traits at phenological, morphological and agronomic levels.…”

mentioning

confidence: 99%

Evaluation of salinity tolerance indices in North African barley accessions at reproductive stage

Allel¹,

BenAmar²,

Abdelly³

2019

Czech J. Genet. Plant Breed.

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Soil salinity is one of the main factors limiting cereal productivity in worldwide agriculture. Exploitation of natural variation in local barley germplasm is an effective approach to overcome yield losses. Three gene pools of North African Hordeum vulgare L. grown in Tunisia, Algeria and Egypt were evaluated at the reproductive stage under control and saline conditions. Assessment of stress tolerance was monitored using morphological, yield-related traits and phenological parameters of reproductive organs showing significant genetic variation. High heritability and positive relationships were found suggesting that some traits associated with salt tolerance could be used as selection criteria. The phenotypic correlations revealed that vegetative traits including shoot biomass, tiller number and leaf number along with yield-related traits such as spike number, one spike dry weight, grain number/plant and grain number/spike were highly positively correlated with grain yield under saline conditions. Hence, these traits can be used as reliable selection criteria to improve barley grain yield. Keeping a higher shoot biomass and longer heading and maturity periods as well as privileged filling ability might contribute to higher grain production in barley and thus could be potential target traits in barley crop breeding toward improvement of salinity tolerance. Multiple selection indices revealed that salt tolerance trait index provided a better discrimination of barley landraces allowing selection of highly salt-tolerant and highly productive genotypes under severe salinity level. Effective evaluation of salt tolerance requires an integration of selection indices to successfully identify and characterize salt tolerant lines required for valuable exploitation in the management of salt-affected areas.

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confidence: 99%

Evaluation of salinity tolerance indices in North African barley accessions at reproductive stage

Allel¹,

BenAmar²,

Abdelly³

2019

Czech J. Genet. Plant Breed.

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“…The longest plant height (122.3 cm) was measured in G24 followed by G23, while the short plant height was measured in G3, G2 and G12. Heading date is a complex trait in barley that has a direct impact on grain yield and quality and also forms the basis of evolutionary adaptation to the changing climate (Ibrahim et al, 2016). Earliness in genotypes is an important feature especially, for drought avoidance.…”

Section: Resultsmentioning

confidence: 99%

“…It reduces climatic risks such as frosts and water stress at sensitive periods during crop development. Three significant genes control heading date in barley (Ibrahim et al, 2016). Both heat and drought at late sowing may interrupt barley developmental processes usually from the double ridge to maturity.…”

Section: Introductionmentioning

confidence: 99%

Biomass in Barley Genotypes (Hordeum Vulgare L.) and Association With Environmental Effects Under Rainfed Conditions

Öztürk

2023

Agriculture & Food

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Biomass in barley is one physiological parameter associated with grain yield and quality in barley genotypes. In the present study, there were various relations between NDVI and parameters investigated barley genotype. This research was carried out in the Trakia region over four environments during the 2018-2019 cycles. The experiment was set up with 25 barley genotypes in a randomized complete block design (RCBD) with four replications. In the study, normalized difference vegetation index (NDVI), grain yield (GY), plant height (PH), days of heading (DH), 1000-kernel weight (TKW), test weight (TW) and protein ratio (PRT) were investigated. The results of the variance analysis (ANOVA) for NDVI are presented in Table 1. The combined ANOVA revealed a significant difference in E2 and E4 locations between genotypes in the Z34 period. In the Z55 period, there was a significant difference between genotypes in E1, E2 and E3 locations. Pearson's correlation analysis determined correlation coefficients between NDVI and the parameters tested. Over four environments, NDVI was made in barley genotypes in the Z34 and Z55 periods. NDVI in the Z34 period was slightly positively related to grain yield in E1 and E4. NDVI also had a positive effect on thousand-grain weight in three (E1, E3, E4) environments, on test weight in E1 (r=0.583**) and E4 (r=0.679**). NDVI had a positive effect on protein ratio in genotypes over four environments. The positive effect of NDVI on grain yield in the heading period (Z55) showed the importance of the relationship between yield and NDVI value. Normalized difference vegetation index had a positive effect on TKW in three environments (E2, E3 and E4), to TW in 4 environments during the Z55 period. In the study, a slightly different relationship was determined between NDVI and protein value in the Z55 period. The positive effect of NDVI on yield and quality values has shown that it is an important physiological parameter that can be used in selection. It is recommended that the increased biomass genotypes identified could be used as parents in a breeding programme to produce genotypes with a higher yield.

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Impacts of recent climate change on crop yield can depend on local conditions in climatically diverse regions of Norway

Mohammadi

Rydgren

Bakkestuen

et al. 2023

Sci Rep

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Globally, climate change greatly impacts the production of major crops, and there have been many attempts to model future yields under warming scenarios in recent years. However, projections of future yields may not be generalisable to all crop growing regions, particularly those with diverse topography and bioclimates. In this study, we demonstrate this by evaluating the links between changes in temperature and precipitation and changes in wheat, barley, and potato yields at the county-level during 1980–2019 in Norway, a Nordic country with a range of climates across a relatively small spatial scale. The results show that the impacts of climate variables on yield vary widely by county, and that for some crops, the strength and direction of the link depends on underlying local bioclimate. In addition, our analysis demonstrates the need for some counties to focus on weather changes during specific crucial months corresponding with certain crop growth stages. Furthermore, due to the local climatic conditions and varying projected climate changes, different production opportunities are likely to occur in each county.

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Barley Phenology: Physiological and Molecular Mechanisms for Heading Date and Modelling of Genotype‐Environment‐ Management Interactions

Cited by 3 publications

References 123 publications

Evaluation of salinity tolerance indices in North African barley accessions at reproductive stage

Evaluation of salinity tolerance indices in North African barley accessions at reproductive stage

Biomass in Barley Genotypes (Hordeum Vulgare L.) and Association With Environmental Effects Under Rainfed Conditions

Impacts of recent climate change on crop yield can depend on local conditions in climatically diverse regions of Norway

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