Cassava Response to Water Deficit in Deep Pots: Root and Shoot Growth, ABA, and Carbohydrate Reserves in Stems, Leaves and Storage Roots

Duque, Luis O.; Setter, Tim L.

doi:10.1007/s12042-013-9131-3

Cited by 53 publications

(41 citation statements)

References 42 publications

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“…Cassava in low soil moisture conditions partially or totally closes its stomata by the accumulation of abscisic acid (ABA). This gradually reduces transpiration, in addition to more efficiently using metabolites produced by photosynthesis (DUQUE;TURYAGYENDA et al, 2013). These characteristics give cassava greater resistance to water stress compared to other crops; however, with tolerance mechanisms aimed at plant survival, growth, and especially, productivity can be substantially reduced (ZHAO et al, 2015;CARVALHO et al, 2016).…”

Section: Initial Growth Of Cassava Plants CV Mossoró Under Differentmentioning

confidence: 99%

“…Nas culturas agrícolas em geral, o estresse hídrico é um dos principais fatores limitantes à produtividade (SHANKER et al, 2014). A mandioca, em condições de baixa umidade no solo, fecha parcialmente ou totalmente os estômatos pelo acúmulo de ácido abscísico (ABA), o que reduz gradualmente a transpiração, além de utilizar mais eficientemente os metabólitos produzidos no processo fotossintético (DUQUE;TURYAGYENDA et al, 2013). Essas características conferem a mandioca maior resistência ao estresse hídrico, quando comparada com outras culturas, entretanto, o crescimento e, principalmente, a produtividade podem reduzir substancialmente, tendo em vista que os mecanismos de tolerância buscam a sobrevivência da planta (ZHAO et al, 2015;CARVALHO et al, 2016).…”

Section: Introductionunclassified

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Initial growth of cassava plants cv. Mossoró under different water regimes

Neto

Coelho

Andrade

et al. 2018

AGRO@MBIENTE ON-LINE

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The sprouting phase of cassava is critical for the establishment of the plant, with this phase being dependent on soil moisture. As such, this study evaluated the effect of different irrigation levels on the initial growth of cassava cv. Mossoró in semi-arid conditions. The experiment was conducted under completely randomized design conditions with 5 replications. The treatments in pots containing one plant per experimental unit consisted of 5 irrigation levels, 0, 25, 50, 75 and 100% of the reference evapotranspiration (ETo, mm day-1), which corresponded to totals for the experimental period of 11.20; 42.15; 73.09; 104.03 and 134.97 mm, respectively. At 30 days after planting, the number of leaves and stems, as well as the dry mass of the shoot and the root had increased sharply for irrigation levels up to 73.09 mm. For higher irrigation levels there was a tendency for plant growth stabilization; however, above 104.03 mm there was a decrease. Shoot and root dry mass ratio showed severe water stress at the 11.20 mm level, being more damaging to root growth. Plant height showed a positive linear trend as the level of irrigation was increased, as opposed to water use efficiency. Therefore, irrigation with 50% replacement of ETo (73.09 mm) provided the best conditions for early growth of cassava.

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Section: Initial Growth Of Cassava Plants CV Mossoró Under Differentmentioning

confidence: 99%

Section: Introductionunclassified

Initial growth of cassava plants cv. Mossoró under different water regimes

Neto

Coelho

Andrade

et al. 2018

AGRO@MBIENTE ON-LINE

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“…Produksi bahan kering biomas yang lebih rendah pada kondisi defisit air adalah akibat dari fotosintesis neto yang sangat nyata menurun pada kondisi cekaman kekeringan, seperti yang terjadi pada tanaman kentang (Li et al 2017). Pada kondisi terkena cekaman kekeringan, pertumbuhan semua bagian atau organ ubi kayu menurun (Duque & Setter 2013). Bobot kering akar, batang, daun, dan umbi pada media dengan KAT 4060% KL berturut-turut adalah 64,4; 43,98; 31,19; dan 23,79% dari media dengan KAT 80100% KL.…”

Section: Produksi Bahan Kering Biomasunclassified

“…Daun-daun muda berhenti memperluas daun dan mengurangi laju transpirasi, dan mengakumulasi ABA lebih banyak daripada daun tua. Menurut Duque & Setter (2013), alokasi karbohidrat ke daun dan tangkai daun pada defisit air sangat berkurang sehingga pertumbuhan daun (jumlah daun, panjang tangkai, lebar, dan panjang lobus) menurun. Aina et al (2007) melaporkan, adanya perbedaan respons pertumbuhan daun terhadap cekaman kekeringan yang signifikan antar genotipe atau varietas ubi kayu.…”

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The Agronomic Respons of Three Cassava Varieties at Various Level of Soil Moisture Content

Suwarto¹,

Sulistyono²,

Prastowo³

2018

JIPI

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ABSTRAK Ubi kayu dibudidayakan hampir di seluruh wilayah Indonesia sebagai bahan pangan, pakan, dan bahan baku industri. Produktivitas antar wilayah beragam karena perbedaan varietas dan lingkungan tumbuh terutama curah hujan atau ketersediaan air. Ubi kayu yang kekurangan air atau mengalami cekaman kekeringan sehingga pertumbuhan dan hasilnya akan turun. Pemilihan varietas yang toleran pada kondisi keterbatasan air tanah penting dilakukan agar diperoleh produktivitas tinggi. Penelitian untuk mengetahui respons pertumbuhan dan hasil ubi kayu terhadap ketersediaan air tanah telah dilakukan dengan percobaan dalam pot di rumah kaca. Tiga varietas ubi kayu, yaitu Adira-1, Gajah, dan Mangu ditanam dalam pot pada tiga tingkat kadar air tanah (KAT) 4060, 6080, dan 80100% kapasitas lapang (KL). Peubah pertumbuhan ketiga varietas mulai dipengaruhi kadar air tanah pada umur 6 minggu setelah tanam (MST) untuk jumlah daun, 8 MST diameter batang, 10 MST tinggi batang, panjang tangkai daun, dan 14 MST lebar dan panjang lobus daun. Bobot kering akar, batang, dan daun di media dengan KAT 4060% KL berturutturut adalah 64,4; 43,98; dan 31,19% dari di KAT 80100% KL. Hasil umbi di media dengan KAT 4060% KL turun 76,2% dan di KAT 6080% KL turun 38,4% dibandingkan di KAT 80100% KL. Varietas Gajah mempunyai efisiensi penggunaan air dan produksi umbi paling tinggi. Kata kunci: defisit air, efisiensi penggunaan air, kapasitas lapang, kekeringan

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“…The rapid ability to restore stomatal function and reactions of carboxylation at satisfactory levels (Connor et al, 1981;El-Sharkawy, 2012; explains the recovery of cassava plants just one day after rewatering. Additionally, the pool of carbohydrates stored within the plant, particularly the stem, may be rapidly metabolized and used as a carbon source for the rapid recovery of important physiological functions immediately after re-watering (Duque and Setter, 2013). Rapid recovery after a severe drought makes the cassava crop a good option for environments with water deficit (Okogbenin et al, 2013;El-Sharkawy, 2014).…”

Section: -Recoverymentioning

confidence: 99%

Elevated CO2 concentrations alleviate the inhibitory effect of drought on physiology and growth of cassava plants

Cruz

Alves

LeCain

et al. 2016

Scientia Horticulturae

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Due to the rise in anthropogenic greenhouse gas concentrations, the earth's climate is expected to change, with precipitation being reduced in some areas resulting in growth-limiting droughts and, as a consequence, reduced plant productivity. We investigated the physiological and growth responses of cassava (Manihot esculenta Crantz) to approximate present-day ambient (390 μL L-1) and elevated (750 μL L-1) atmospheric CO2 concentrations under well-watered and water deficit conditions, aiming at understanding how cassava would face those problems. Water deficits led to reductions in the Leaf Elongation Rate of plants grown at ambient as well as CO2-enriched concentrations. However, plants grown at 750 μL L-1 of CO2 maintained leaf growth two days longer than plants grown at 390 μL L-1. Three Days After Withholding Water (DAWW), photosynthesis and stomatal conductance were reduced in plants grown under ambient CO2, while in plants under an elevated CO2 concentration, these physiological functions remained similar to that of control plants grown under good water availability. Five DAWW plants grown with 750 μL L-1 continued to have enhanced gas exchange compared with plants grown under 390 μL L-1. Under drought stress, the instantaneous transpiration efficiency was always greatest for plants grown under elevated CO2. The positive response of elevated CO2 levels on total dry mass was 61% in the water-stressed plants and only 20% for the plants grown under good water availability. Stomatal limitation was an important factor reducing CO2 assimilation in cassava growing under drought conditions.

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Cassava Response to Water Deficit in Deep Pots: Root and Shoot Growth, ABA, and Carbohydrate Reserves in Stems, Leaves and Storage Roots

Cited by 53 publications

References 42 publications

Initial growth of cassava plants cv. Mossoró under different water regimes

Initial growth of cassava plants cv. Mossoró under different water regimes

The Agronomic Respons of Three Cassava Varieties at Various Level of Soil Moisture Content

Elevated CO2 concentrations alleviate the inhibitory effect of drought on physiology and growth of cassava plants

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