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  • Open Access

    ARTICLE

    Effect of PEG8000 and NaCl on germination and seedling traits of tropical maize (Zea mays L.)

    Castañón-Nájera G1, L Latorunerie-Moreno2, YA Gálvez Muñoz3

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 290-295, 2017, DOI:10.32604/phyton.2017.86.290

    Abstract Among the different types of abiotic stresses, water is the most damaging for crops. In the current research, the effect of water stress, induced with Polyethylene Glycol 8000 (PEG8000) and Sodium chloride (NaCl) solutions, was studied in maize genotypes. A randomized block design (RBD) with a factorial arrangement and four replications of 25 seeds each was used. The studied maize genotypes were RC2C39, RC2C51 (wild varieties of the State of Tabasco backcrossed with the endogamic line CML247 of the International Center for the Improvement of Maize and Wheat), wild Tamulte, VS536, and Asgrow 7573 hybrid, study osmotic pressures (OP) were… More >

  • Open Access

    ARTICLE

    Physiological response of early and late maturity oilseed rape cultivars to drought under two climate conditions

    Jabbari H1, M Gholamhosseini1, M Naeemi2, A Nasiri3

    Phyton-International Journal of Experimental Botany, Vol.87, pp. 133-142, 2018, DOI:10.32604/phyton.2018.87.133

    Abstract Two experiments were performed in 2011-2012 to investigate the response of three oilseed rape cultivars to drought stress, grown under two climate conditions in Iran (cold and hot climates). The experiments were conducted using a randomized complete-block design arranged in split-plot with three replicates. The irrigation treatments (FI: full irrigation; WIF: withholding irrigation at flowering stage, and WIS: withholding irrigation at the silique formation stage until physiological maturity) were allocated to main plots, whereas subplots consisted of the oilseed rape cultivars: early maturating (GKH2005), relatively late maturing (Opera) and late maturing (Okapi). Drought caused a significant reduction in seed number,… More >

  • Open Access

    ARTICLE

    Responses of C:N:P stoichiometry of plants from a Hulunbuir grassland to salt stress, drought and nitrogen addition

    Wang XG1, Wuyunna1*, CA Busso2, YT Song1, FJ Zhang1, GW Huo1

    Phyton-International Journal of Experimental Botany, Vol.87, pp. 123-132, 2018, DOI:10.32604/phyton.2018.87.123

    Abstract Chemical elements, such as carbon (C), nitrogen (N) and phosphorus (P), are major limiting nutrients in arid and semiarid grasslands and their stoichiometry (C:N:P) is a very important ratio to determine. In addition, it is critical to understand how plant stoichiometry responds to multiple environmental factors at the species level. In this study, we conducted a greenhouse experiment to investigate the effects of salt stress (4 g NaCl/kg soil), drought (35% of the soil water holding capacity) and N addition (10 g N/m2), as well as their interactions, on C, N and P concentrations and C:N:P ratios in two dominant… More >

  • Open Access

    ARTICLE

    Identification of phytohormone changes and its related genes under abiotic stresses in transgenic rice

    Mohammad UBAIDILLAH1,2, Miswar FAPERTA1,2, Kyung-Min KIM1

    BIOCELL, Vol.43, No.3, pp. 215-224, 2019, DOI:10.32604/biocell.2019.07549

    Abstract Abiotic stresses, such as drought and salinity, adversely affect plant growth and productivity. Comparison between non transgenic and transgenic rice harboring CaMsrB2 gene, which induces tolerance to abiotic stress, is important to observe response of gene under abiotic stress. Phytohormone showed a tendency to increase under the drought stress or salinity stress in the transgenic plant. RT-PCR analysis showed that gene expression and phytohormone levels under abiotic stress, to be closely related. The CaMsrB2 gene is related to the expression of JA and ABA hormones. Therefore, the level of expression of these genes and hormones was observed. The transcription levels… More >

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