Effects of Soil Moisture Conditions before Heading on Growth of Wheat Plants under Drought Conditions in the Ripening Stage: Insufficient Soil Moisture Conditions before Heading Render Wheat Plants More Resistant to Drought during Ripening

Saidi, Amirjan; Ookawa, Taiichiro; Motobayashi, Takashi; Hirasawa, Tadashi

doi:10.1626/pps.11.403

Cited by 13 publications

(7 citation statements)

References 34 publications

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“…Photo‐assimilates were mostly partitioned to the roots during the drought treatment after booting stage in the DD treatment, confirming results from Saidi et al. (); however, in the DW treatment, partitioning to grains was more pronounced as WW treatment, which is a desirable trait for yield stability in drought‐prone environments. The critical period for spike development coincides with stem elongation stage, explaining the significant decrease in spikelet number and thus final grain number observed in both drought treatments.…”

Section: Discussionsupporting

confidence: 87%

Photosynthesis and Remobilization of Dry Matter in Wheat as Affected by Progressive Drought Stress at Stem Elongation Stage

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Brück

Asch

2015

J Agronomy Crop Science

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With increasingly erratic rainfall patterns particularly in drought-prone production systems, the capacity of plants to recover productively from drought spells becomes an important feature for yield stability in rainfed agriculture. Consequently, effects of water management at the stem elongation stage on partitioning and remobilization of dry matter, alteration in photosynthesis and water-use efficiency (WUE), and yield components of wheat plants were studied in a glasshouse pot experiment. The plants were subjected to three soil moisture regimes: well watered during all phenological stages (WW), drought affected during stem elongation and post-anthesis stages (DD) and drought affected during stem elongation and rewatered at post-anthesis stage (DW). Total dry weight substantially decreased by both drought treatments. However, DD plants allocated relatively higher assimilates to roots whereas DW plants remobilized them to the grains. Drought applications resulted in a decrease of grain yield and thousand grain weight while reduction was more pronounced in DD treatment. Relative contribution of post-anthesis photosynthesis to dry matter formation in grain was higher in WW treatment (72.6 %) than DD (68.5 %) and DW (68.2 %) treatments. Photosynthetic rate, gas exchange and transpiration decreased whereas leaf (photosynthetic) and plant level WUE increased with drought applications. However, all these parameters were rapidly and completely reversed by rewatering. Our findings showed that partitioning of dry weight to grain increases with rewatering of wheat plants subjected to drought during stem elongation phase, but the relative contributions of remobilization of stem reserves and postanthesis photosynthesis to grain did not change. Moreover, rewatering of plants at booting stage after a drought period lead to full recovery in photosynthesis and WUE, and a significant although partial recovery of yield components, such as grain yield, TGW and harvest index.

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Section: Discussionsupporting

confidence: 87%

Photosynthesis and Remobilization of Dry Matter in Wheat as Affected by Progressive Drought Stress at Stem Elongation Stage

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Brück

Asch

2015

J Agronomy Crop Science

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“…In soybean (Hirasawa et al, 1998a), wheat (Nakamura et al, 2003;Nakagami et al, 2004;Saidi et al, 2008) and upland rice (Hirasawa et al, 2005), the plants with a better developed root system performed well by keeping a higher rate of leaf photosynthesis during ripening under defi cient soil moisture conditions and also even under suffi cient soil moisture conditions. These plants also could improve the use efficiency of irrigated water (Hirasawa et al, 1998a(Hirasawa et al, , 2005.…”

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confidence: 99%

“…Root systems of soybean (Hirasawa et al, 1998a), wheat (Nakamura et al, 2003;Nakagami et al, 2004;Saidi et al, 2008) and upland rice (Hirasawa et al, 2005) developed more effectively in deeper layers of soil when plants were grown in the fi eld with deficient moisture than in the field with adequate moisture. A high capacity for developing a better root system might be achieved by appropriate management of soil (Kawata et al, 1969;Zhang et al, 2004), irrigation (Xue et al, 2003;Saidi et al, 2008) and drainage (Hirasawa et al, 1998a;Nakamura et al, 2003;Nakagami et al, 2004). For the establishment of appropriate management of irrigation and drainage, information on quantitative root growth in response to soil moisture conditions is required.…”

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confidence: 99%

“…For the establishment of appropriate management of irrigation and drainage, information on quantitative root growth in response to soil moisture conditions is required. Observations in the field indicated that root growth was better in soil with a moisture deficit than in soil with sufficient moisture, for example, in wheat (Nakamura et al, 2003;Xue et al, 2003;Nakagami et al, 2004;Zhang et al, 2004;Saidi et al, 2008), soybean (Hida et al, 1995a, b;Hirasawa et al, 1994Hirasawa et al, , 1998a and upland rice (Hirasawa et al, 2005). However, quantitative research on the growth response of root to soil moisture in wide ranges of moisture has been very limited even in the laboratory.…”

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confidence: 99%

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Responses of Root Growth to Moderate Soil Water Deficit in Wheat Seedlings

Saidi

Ookawa

Hirasawa

2010

Plant Production Science

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“…Düzensiz yağış dağılımlarının etkisine ek olarak, kuraklık etkisinin bitkiler üzerindeki şiddeti, buğdayın gelişim evresine bağlı olarak da değişkenlik göstermektedir (Gupta et al, 2001). Buğdayda tane veriminin başlıca kaynağı, başaklanmadan sonraki kuru madde birikimi olduğu için (Schnyder, 1993;Saidi et al, 2008) bitki gelişme dönemleri bakımından tane dolum dönemi kuraklığı kritik bir öneme sahiptir. Terminal kuraklığın buğdayda verimi ve bu döneme ait fenolojik süreçleri nasıl ve ne ölçüde etkilediğinin iyi anlaşılması, bu kuraklık tipine adapte olabilecek genotiplerin ıslahında yardımcı olabilecektir.…”

Section: Introductionunclassified

Ekmeklik Buğday Genotiplerinin Verim ve Fenolojik Özelliklerinin Tane Doldurma Dönemindeki Kuraklık Stresine Tepkileri

Ayranci

Sade

Soylu

2017

Tarla Bitkileri Merkez Araştırma Enstitüsü Dergisi

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ÖzBu çalışmanın amacı Orta Anadolu Bölgesi'nde tane doldurma döneminde görülebilen kuraklık tipinin modellendiği kontrollü tarla şartlarında, ekmeklik buğday genotiplerinin verim ve bazı fenolojik özelliklerinin tepkilerinin belirlenmesidir. Çalışma, Konya'da 2009-2010 yetiştirme yıllarında yağmur korunakları altında, tesadüf bloklarında bölünmüş parseller deneme deseninde, dört tekerrürlü; ana parsellerde uygulamalar (S 1 : Tane doldurma dönemi kuraklığı, S 2 : Tam sulu koşullar) ve alt parsellerde 10 ekmeklik buğday genotipi kullanılarak yürütülmüştür. Çalışmada, genotiplerin verim ve fenolojik özelliklerinin tane doldurma dönemindeki kuraklığa tepkileri değerlendirilmiştir. Çalışmada tane verimi, uygulama ortalamaları olarak 579 kg da -1 (S 1 ) ile 760 kg da -1 (S 2 ) arasında ve stres uygulamaları üzerinden genotiplerde 595 kg da -1 (Göksu 99) ile 725 kg da -1 (BDME 09/1K) arasında değişmiştir. Stres uygulaması, sulu uygulama ile karşılaştırıldığında, tane dolum dönemi kuraklık uygulamasında tane verimi %23.9 oranında azalmıştır. KHİ değerleri 0.58 (Bayraktar 2000) ile 1.73 (Göksu 99) arasında değişmiştir. Bayraktar 2000 çeşidi tane dolum kuraklığına en toleranslı çeşit olarak belirlenmiştir. Fenolojik özelliklerin uygulama ortalamaları olarak, başaklanma süresi 168.6 gün ile 171.9 gün, çiçeklenme süresi 174.2 gün ile 178.1 gün, fizyolojik olum süresi 208.9 gün ile 218.1 gün ve tane dolum süresi 34.7 gün ile 39.9 gün arasında değişim göstermiştir. Stres uygulaması sulu koşullara göre, başaklanma süresinde %1.9; çiçeklenme süresinde %2.2; fizyolojik olum süresinde %4.2; tane dolum süresinde %13 kısalmaya sebep olmuştur. Tane dolum süresi uzun olan çeşitlerin verim değerlerinin yüksek olduğu belirlenmiştir. Bu çalışmada tane doldurma dönemi kurak stresi altında ekmeklik buğday genotiplerinde kuraklığa adaptasyonu desteklediği belirlenen tane doldurma süresi parametresi, geç dönemde etkili olan kuraklık için, toleranslı genotip geliştirmek amacıyla, seleksiyon parametresi olarak kullanılabilir.Anahtar Kelimeler: Kuraklık, buğday, fenolojik özellikler, seleksiyon, parametre The Response on the Drought Stress Yield and Phenological Properties of Bread Wheat Genotypes in Grain Filling Stage AbstractThe aim of this study was to determine the responses of the grain yield and some phenological properties of bread wheat genotypes under controlled field conditions which can be seen in grain filling stage in Central Anatolia Region. This research was conducted to observe the drought resistance of ten bread wheat genotypes at grain filling period. Split-plot in randomized complete block design techniques were used with four replicates in 2009-2010 under rain shelter in Konya Province. Two different irrigation treatments were done in grain filling period drought (S1) and in full irrigation conditions (S2). Results showed that grain yield values varied from 579 (S 1 ) to 760 kg da -1 (S 2 ) under drought treatments, and from 595 (Göksu 99) to 725 kg da -1 (BDME 09/1K). If the means of drought treatment was compared with ir...

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Effects of Soil Moisture Conditions before Heading on Growth of Wheat Plants under Drought Conditions in the Ripening Stage: Insufficient Soil Moisture Conditions before Heading Render Wheat Plants More Resistant to Drought during Ripening

Cited by 13 publications

References 34 publications

Photosynthesis and Remobilization of Dry Matter in Wheat as Affected by Progressive Drought Stress at Stem Elongation Stage

Photosynthesis and Remobilization of Dry Matter in Wheat as Affected by Progressive Drought Stress at Stem Elongation Stage

Responses of Root Growth to Moderate Soil Water Deficit in Wheat Seedlings

Ekmeklik Buğday Genotiplerinin Verim ve Fenolojik Özelliklerinin Tane Doldurma Dönemindeki Kuraklık Stresine Tepkileri

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