Effect of source and sink limitation on yield and some agronomic characteristics in modern bread wheat cultivars under post anthesis water deficiency / OMEJITVENI VPLIV VIRA IN PONORA NA PRIDELEK IN NEKATERE AGRONOMSKE LASTNOSTI NOVEJŠIH SORT KRUŠNE PŠENICE V RAZMERAH POMANJKANJA VODE PO ANTEZI

Ali, Majid; Saeidi, Mohsen; Jalali-Honarmand, Saeid; Mansourifar, S; Ghobadi, Mokhtar; Cheghamirza, Kianoosh

doi:10.2478/acas-2013-0013

Cited by 5 publications

(4 citation statements)

References 23 publications

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“…While in another study, drought stress during the grain-filling period reduced the net photosynthetic rate of the barley flag leaf, but had no influence on the grain-filling rate at a severe vapour pressure deficit [59]. Abdoli and Saeidi [60] observed that the net photosynthetic rate decreased with chlorophyll content, which was accompanied by a decrease in stomatal conductance. The controlled severe drought imposed during the vegetative stage decreased photosynthesis and plant growth in both barley genotypes in a similar manner [61].…”

Section: Gaseous Exchange Parameters Towards Drought Tolerancementioning

confidence: 90%

Morphological, Physiological, Biochemical and Molecular Response of Barley (H. Vulgare L.) to Water Deficiency

Rajkumar,

Sapna,

Kumar

et al. 2023

IJECC

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Barley (Hordeum vulgare L.) is one of the earliest cultivated cereals and a foundational crop of ancient agriculture. After rice, maize, and wheat, barley is the fourth most widely cultivated cereal crop in the world. It is cultivated in numerous developed and developing nations, where it frequently faces severe drought stress. Every year, droughts afflict the entire planet, frequently with catastrophic effects on crop production. Many crop modification projects have primarily targeted on the enhancement of drought resistance. However, progress toward this objective has been modest due to complexity of the trait, variability and unpredictability of the drought conditions in the field, and diversified drought tolerance mechanisms employed by plants. Barley is regarded as the most drought-resistant grain crop. It serves as an uncomplicated genetic model for studying drought tolerance mechanisms along with the associated agronomic and physiological traits. Several morphological, physiological, biochemical, molecular and quality traits were identified from various barley varieties and used to improve performance under drought stress. The present report is a comprehensive review that intends to give morphological, physiological, biochemical and genomic insights into the modulation of drought stress responses in barley and provide a thorough picture of drought tolerance mechanism.

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Section: Gaseous Exchange Parameters Towards Drought Tolerancementioning

confidence: 90%

Morphological, Physiological, Biochemical and Molecular Response of Barley (H. Vulgare L.) to Water Deficiency

Rajkumar,

Sapna,

Kumar

et al. 2023

IJECC

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show abstract

“…Several other studies, carried out in different parts of the world, have addressed the response of wheat grain weight to changes in source/sink ratios by mechanical or chemical defoliation, grain removal, stand reduction or shading. As a result, a low degree of source limitation in the absence of water stress and other adversities (biotic and abiotic) during grain filling has consistently been reported (Slafer and Savin, 1994;Miralles and Slafer, 1995;Abbate et al, 1997;Cruz-Aguado et al, 1999;Calderini et al, 2006;Lázaro et al, 2010;Zhang et al, 2010;Mohammadi, 2012;Saeidi et al, 2012;Abdoli et al, 2013;Serrago et al, 2013;Trujillo-Negrellos et al, 2014;Cantarero et al, 2016). Accordingly, Borrás et al (2004) reappraised an extensive dataset comprising 18 studies published between 1975 and 1995 and examined the response of grain weight to the availability of assimilates during grain filling, finding that wheat grain yield was barely source-limited.…”

Section: Introductionmentioning

confidence: 88%

Analysis of sink/source relations in bread wheat recombinant inbred lines and commercial cultivars under a high yield potential environment

Alonso

Abbate

Mirabella

et al. 2018

European Journal of Agronomy

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“…In the study of the relationship between the source and the sink, it was observed that the removal of half of the spikelets caused a decrease in the number of grains in the spike, the weight of a single spike, and the weight of the whole grain of wheat (Wang et al, 2021). In the conditions of drought stress, the removal of wheat spikelets increased grain yield and 1000-grain weight by 35 and 21%, respectively (Abdoli et al, 2013). In maize, leaf removal resulted in significant remobilization of stem reserves, which did not completely alleviate seed weight loss.…”

Section: Introductionmentioning

confidence: 99%

Alteration of Wheat Source-Sink Relation by Nitrogen and Spikelet Removal

HEİDARİ

2023

Tekirdağ Ziraat Fakültesi Dergisi

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The source and sink relationships determine the amount and distribution of biomass in plants. Field and laboratory experiments were conducted to study the effect of nitrogen rate and spikelet removal on seed yield and germination traits of wheat. The field experiment was conducted employing sink manipulation (no spikelet removal and ½ spikelet removal) and source manipulation (nitrogen rate of 0, 75, and 150 kg ha-1). This study was performed as a factorial experiment in a randomized complete block design with three replications. Seeds obtained from the field experiment were subjected to determine the effect of the sink and source manipulation on seed germination traits in the laboratory experiment. Results showed that most traits under study were not affected by source and sink manipulation. Seed yield and seed weight were not affected by spikelet removal and varying nitrogen applications. Although some of the wheat spikelets have been removed, those plants have been able to maintain the number of seeds per spike and the weight of a single seed. The use of nitrogen at the spike emergence stage did not affect the seed yield of the Pishtaz cultivar. Nitrogen needed for the seeds could be compensated by the re-mobilization of nitrogen from various plant organs such as the stem. Nitrogen application of 150 kg ha-1 with the removal of ½ spikelets improved seed germination (%) and vigor comparing control (no spikelet removal with no nitrogen application). Considering that seed yield and seed weight did not change under the influence of source and sink manipulation, it can be concluded that Pishtaz wheat is more sink-limited than source-limited.

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Effect of source and sink limitation on yield and some agronomic characteristics in modern bread wheat cultivars under post anthesis water deficiency / OMEJITVENI VPLIV VIRA IN PONORA NA PRIDELEK IN NEKATERE AGRONOMSKE LASTNOSTI NOVEJŠIH SORT KRUŠNE PŠENICE V RAZMERAH POMANJKANJA VODE PO ANTEZI

Cited by 5 publications

References 23 publications

Morphological, Physiological, Biochemical and Molecular Response of Barley (H. Vulgare L.) to Water Deficiency

Morphological, Physiological, Biochemical and Molecular Response of Barley (H. Vulgare L.) to Water Deficiency

Analysis of sink/source relations in bread wheat recombinant inbred lines and commercial cultivars under a high yield potential environment

Alteration of Wheat Source-Sink Relation by Nitrogen and Spikelet Removal

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