Effects of Post-Anthesis Drought Stress on the Stem-Reserve Mobilization Supporting Grain Filling of Two-Rowed Barley Cultivars at Different Levels of Nitrogen

Budakli, Emine; Çelik, Necmettin; Türk, Mevlüt; Bayram, Gamze; Taş, Birol

doi:10.3923/jbs.2007.949.953

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…Additional reduction in carbohydrates and nitrogen supply, either from a decrease in photosynthetic activity or a reduction in leaf area, would further decrease kernel size and shorten kernel-filling duration, resulting in smaller kernel (Palta et al, 1994). The shortened kernel-filling duration leading to reduced assimilates under water deficit can be compensated through remobilization of stem reserves during grain filling, which is an important supporting process that can largely compensate grain yield decrease (Bdukli et al, 2007). Drought-induced damages on plant cell membranes lead to imbalanced cellular function.…”

Section: Introductionmentioning

confidence: 99%

Kernel Water Relations and Kernel Filling Traits in Maize (Zea mays L.) Are Influenced by Water-Deficit Condition in a Tropical Environment

et al. 2021

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Water deficit is a major limiting condition for adaptation of maize in tropical environments. The aims of the current observations were to evaluate the kernel water relations for determining kernel developmental progress, rate, and duration of kernel filling, stem reserve mobilization in maize. In addition, canopy temperature, cell membrane stability, and anatomical adaptation under prolonged periods of pre- and post-anthesis water deficit in different hybrids was quantified to support observations related to kernel filling dynamics. In this context, two field experiments in two consecutive years were conducted with five levels of water regimes: control (D1), and four water deficit treatments [V10 to V13 (D2); V13 to V17 (D3); V17 to blister stage (D4); blisters to physiological maturity (D5)], on three maize hybrids (Pioneer 30B80, NK 40, and Suwan 4452) in Expt. 1. Expt. 2 had four water regimes: control (D1), three water deficit treatments [V10 to anthesis (D2); anthesis to milk stage (D3); milk to physiological maturity (D4)], and two maize hybrids (NK 40 and Suwan 4452). Water deficit imposed at different stages significantly reduced maximum kernel water content (MKWC), kernel filling duration (KFD), final kernel weight (FKW), and kernel weight ear–1 while it increased kernel water loss rate (KWLR), kernel filling rate (KFR), and stem weight depletion (SWD) across maize hybrids in both experiments. The lowest MKWC under water deficit was at D3 in both experiments, indicating that lower KFR results in lowest FKW in maize. Findings indicate that the MKWC (R2 = 0.85 and 0.41) and KFR (R2 = 0.62 and 0.37) were positively related to FKW in Expt. 1 and 2, respectively. The KFD was reduced by 5, 7, 7, and 11 days under water deficit at D3, D4 in Expt. 2 and D4, D5 in Expt. 1 as compared to control, respectively. Water deficit at D5 in Expt. 1 and D4 in Expt. 2 increased KWLR, KFR, and SWD. In Expt. 2, lower canopy temperature and electrical conductivity indicated cell membrane stability across water regimes in NK 40. Hybrid NK 40 under water deficit had significantly higher cellular adaptation by increasing the number of xylem vessel while reducing vessel diameter in leaf mid-rib and attached leaf blade. These physiological adjustments improved efficient transport of water from root to the shoot, which in addition to higher kernel water content, MKWC, KFD, KFR, and stem reserve mobilization capacity, rendered NK 40 to be better adapted to water-deficit conditions under tropical environments.

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Section: Introductionmentioning

confidence: 99%

Kernel Water Relations and Kernel Filling Traits in Maize (Zea mays L.) Are Influenced by Water-Deficit Condition in a Tropical Environment

et al. 2021

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“…One of the methods that were approved as effective for the selection of cereal varieties resistant to drought is the chemical desiccant application (Dogan et al, 2012). For this purpose, chemical desiccants such as potassium iodide (Sawhney and Singh, 2002), magnesium chlorate (Blum et al, 1983), sodium chlorate (Haley and Quik, 1993) and potassium chlorate (Budaklı et al, 2007) are used. Artificial drought stress induced by applying chemical desiccant at the post-anthesis stage caused the reduction in seed size and weight (Blum et al, 1983;Haley and Quik, 1993;Chandra et al, 2005;Cseuz, 2009;Mohammadi et al, 2009).…”

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confidence: 99%

Kuraklık Stresinde Kalmış Bazı Ekmelik Buğday (Triticum aestivum L.) Çeşitlerinin Tohumluklarının Agronomik Performansları

Balkan¹

2019

Tekirdağ Ziraat Fakültesi Dergisi

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This study was carried out to determine agronomic performance of seeds of some bread wheat cultivars exposed to artificial drought stress. Seeds obtained from eight bread wheat cultivars with different response to drought (Konya 2002, Alpu 2001, Sultan 95 and Eser as drought sensitive cultivars; Karahan 99, Tosunbey, Kate A1 as drought resistant cultivars and Golia as moderate drought resistant cultivar) after their treatment, in previous years, by artificial drought stress through using chemical desiccant (4% potassium cholorate-KClO3) at the post-anthesis stage were used as experimental material. The field experiment was arranged in a split-plot design with 3 replicates during 2009-2010 and 2010-2011 wheat growing seasons. Cultivars were adjusted as main plots and seeds were allotted as subplots. In the experiment, seeds obtained from desiccant applied plants (SDAP) and control (non-desiccant) plants (SCP) were compared for plant height (PH), spike length (SL), number of grain per spike (NGPS), grain weight per spike (GWPS), grain yield (GY) and thousand kernel weight (TKW). It was determined that the drought resistant cultivars had generally higher values for PH, GWPS, GY and TKW than the other cultivars. However, the highest NGPS was obtained from the drought sensitive cultivars. The study has shown that desiccant application has detractive impact on seed size in all cultivars. Therefore, the SCP showed significantly higher performance for all examined traits than the SDAP. Consequently, data showed that artificial drought stress by chemical desiccant application at the post-athesis stage affected negatively seed quality in bread wheat.

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Study of relationship between morpho-physiological traits and grain yield under terminal drought stress conditions in barley genotypes

Firoozabadi

Nikkhah

Foruzesh

2022

CEREAL RESEARCH COMMUNICATIONS

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Effects of Post-Anthesis Drought Stress on the Stem-Reserve Mobilization Supporting Grain Filling of Two-Rowed Barley Cultivars at Different Levels of Nitrogen

Cited by 8 publications

References 16 publications

Kernel Water Relations and Kernel Filling Traits in Maize (Zea mays L.) Are Influenced by Water-Deficit Condition in a Tropical Environment

Kernel Water Relations and Kernel Filling Traits in Maize (Zea mays L.) Are Influenced by Water-Deficit Condition in a Tropical Environment

Kuraklık Stresinde Kalmış Bazı Ekmelik Buğday (Triticum aestivum L.) Çeşitlerinin Tohumluklarının Agronomik Performansları

Study of relationship between morpho-physiological traits and grain yield under terminal drought stress conditions in barley genotypes

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