Plants responses to drought and shade environments

Kwon, Min Young; Woo, Su Young

doi:10.5897/ajb2015.15017

Cited by 14 publications

(6 citation statements)

References 32 publications

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“…Low seeds yield due to shading during plant life cycl e was caused by leaves numbers and branch numbers (as a source) that became fewe r, lower photosynthesis capacity, and inadequate photosynthesis to raise yield component (pods number and weight) which finally led to low seeds yield of peanut. This is in line with the opinion of Kwon & Woo (2016) that shaded plants will have thinner leaves, decreased palisade parenchym, lower leaf area, lower photosynthesis and lastly could affected on yield components.…”

Section: Resultssupporting

confidence: 90%

“…Some enzymes of photosynthesis process, i.e phosphoriboisomerase, phosphoribulokinase, ribulose-1,5-diPcarboxylase, need enough light for activation. If the light is not sufficient, the enzymes will be deactivated until the fixation of CO 2 decreases and the photosynthesis process is hampered (Shao, et al, 2014;Kwon & Woo, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…A plant naturally needs light for its growth especially for photosynthesis process. Light is one of important factors for plant's growth in the ecosystem and an environment factor which affects the growth, morphology, physiology, and biochemistry of the plant (Kwon & Woo, 2016). Therefore, the light highly affects the growth and yield of a plant.…”

Section: Introductionmentioning

confidence: 99%

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Shade effect on growth, yield, and shade tolerance of three peanut cultivars

Noertjahyani

Akbar

Komariah

et al. 2020

J. AGRO

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Peanut, which is commonly planted in interculture and intercropping system, often suffers from shading caused by associated plants. This experiment aimed to study the effect of different shade levels of three peanut cultivars on the growth and seed yield, also to determine the shade-tolerant cultivar. A pot experiment was done at the Research Station of Agriculture Faculty Universitas Winaya Mukti since July until October 2016 by creating 50%, 65%, and 75% artificial shade levels during the lifetime of Tuban, Jepara, and Bima cultivars. The shade significantly affected on number of trifoliate leaves, number of branches, plant dry weight, yield components (number of pods, number of filled pods, and number of seeds), dry weight of pod, and seed weight per plant. The cultivar gave same effect on the growth and seed yield per plant. Based on Stress Tolerance Index (STI) analysis on the seed dry weight per plant, only Tuban cultivar showed great tolerance of 65% shade of natural light. Overall, the whole cutivars tested were sensitive on 75% shade level. ABSTRAKKacang tanah yang biasa ditanam pada sistem tumpangsari dan interkultur, sering ternaungi karena berasosiasi dengan tanaman lainnya. Penelitian ini bertujuan untuk mengkaji pengaruh naungan yang berbeda pada tiga kultivar kacang tanah terhadap pertumbuhan dan hasil, serta mendapatkan kultivar kacang tanah yang toleran terhadap naungan. Percobaan pot dilakukan di kebun percobaan Fakultas Pertanian Universitas Winaya Mukti dari bulan Juli sampai dengan Oktober 2016. Perlakuan percobaan adalah perbedaan naungan (tanpa naungan, naungan 50%, 65% dan 75%) selama siklus hidup tiga kultivar tanaman kacang tanah (Tuban, Jepara dan Bima). Hasil percobaan menunjukkan bahwa naungan memengaruhi jumlah daun trifoliat, jumlah cabang, bobot kering tanaman, komponen hasil (jumlah polong, jumlah polong isi, dan jumlah biji), bobot kering polong dan bobot kering biji per tanaman. Kultivar memberikan efek yang sama terhadap pertumbuhan dan hasil per tanaman. Berdasarkan analisis Stress Tolerance Index (STI) terhadap bobot kering per tanaman, hanya kultivar Tuban yang toleran pada naungan 65%. Semua kultivar peka terhadap naungan 75%.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shade effect on growth, yield, and shade tolerance of three peanut cultivars

Noertjahyani

Akbar

Komariah

et al. 2020

J. AGRO

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“…Plants regulate their shoot/root ratios variably with the availability of substrates and environmental conditions [60]. An increased root:shoot ratio enables the plants to maximize the water uptake under drought stress [61]. Under water-limiting conditions, the shoots decrease their concentrations of sugars, amino acids, nucleosides, N, P, and K; on other hand, roots increase these components [62].…”

Section: Morphological Responsementioning

confidence: 99%

Seed Priming: A Feasible Strategy to Enhance Drought Tolerance in Crop Plants

Vishvanathan

Geetha

Kumutha

et al. 2020

IJMS

184

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Drought is a serious threat to the farming community, biasing the crop productivity in arid and semi-arid regions of the world. Drought adversely affects seed germination, plant growth, and development via non-normal physiological processes. Plants generally acclimatize to drought stress through various tolerance mechanisms, but the changes in global climate and modern agricultural systems have further worsened the crop productivity. In order to increase the production and productivity, several strategies such as the breeding of tolerant varieties and exogenous application of growth regulators, osmoprotectants, and plant mineral nutrients are followed to mitigate the effects of drought stress. Nevertheless, the complex nature of drought stress makes these strategies ineffective in benefiting the farming community. Seed priming is an alternative, low-cost, and feasible technique, which can improve drought stress tolerance through enhanced and advanced seed germination. Primed seeds can retain the memory of previous stress and enable protection against oxidative stress through earlier activation of the cellular defense mechanism, reduced imbibition time, upsurge of germination promoters, and osmotic regulation. However, a better understanding of the metabolic events during the priming treatment is needed to use this technology in a more efficient way. Interestingly, the review highlights the morphological, physiological, biochemical, and molecular responses of seed priming for enhancing the drought tolerance in crop plants. Furthermore, the challenges and opportunities associated with various priming methods are also addressed side-by-side to enable the use of this simple and cost-efficient technique in a more efficient manner.

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“…The effects of climate change, including more extended, intense, and frequent drought periods, will worsen this problem [1][2][3]. Drought and soil salinity are the most harmful environmental stress factors for plants [4]. Both negatively affect crop growth, development, and productivity through the induction of osmotic and oxidative stress, with the additional component of ion toxicity in the case of salt stress [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effects of Drought and Salinity on Two Commercial Varieties of Lavandula angustifolia Mill

Szekely-Varga

González-Orenga

Cantor

et al. 2020

Plants

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Global warming is not only affecting arid and semi-arid regions but also becoming a threat to agriculture in Central and Eastern European countries. The present study analyzes the responses to drought and salinity of two varieties of Lavandula angustifolia cultivated in Romania. Lavender seedlings were subjected to one month of salt stress (100, 200, and 300 mM NaCl) and water deficit (complete withholding of irrigation) treatments. To assess the effects of stress on the plants, several growth parameters and biochemical stress markers (photosynthetic pigments, mono and divalent ions, and different osmolytes) were determined in control and stressed plants after the treatments. Both stress conditions significantly inhibited the growth of the two varieties, but all plants survived the treatments, indicating a relative stress tolerance of the two varieties. The most relevant mechanisms of salt tolerance are based on the maintenance of foliar K+ levels and the accumulation of Ca2+ and proline as a functional osmolyte in parallel with increasing external salinities. Under water stress, significant increases of Na+ and K+ concentrations were detected in roots, indicating a possible role of these cations in osmotic adjustment, limiting root dehydration. No significant differences were found when comparing the stress tolerance and stress responses of the two selected lavender varieties.

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Plants responses to drought and shade environments

Cited by 14 publications

References 32 publications

Shade effect on growth, yield, and shade tolerance of three peanut cultivars

Shade effect on growth, yield, and shade tolerance of three peanut cultivars

Seed Priming: A Feasible Strategy to Enhance Drought Tolerance in Crop Plants

Effects of Drought and Salinity on Two Commercial Varieties of Lavandula angustifolia Mill

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