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  1. Article ; Online: Cross pollination of different peony cultivars with ‘Feng dan’

    Ting Li / Qi Qiao / Jianfeng Li / Xingfei Guo / Xiaogai Hou

    Ciência Rural, Vol 51, Iss

    2021  Volume 11

    Abstract: ABSTRACT: Paeonia ostii ‘Feng dan’ is recommended as a new promising oil crop because of the nutrient elements in its seed; however, the development of this new oil crop is now limited due to its low seed setting rate. This study identified ways to ... ...

    Abstract ABSTRACT: Paeonia ostii ‘Feng dan’ is recommended as a new promising oil crop because of the nutrient elements in its seed; however, the development of this new oil crop is now limited due to its low seed setting rate. This study identified ways to improve the cross pollination of Feng dan as the maternal parent, which has been proved to be a suitable oil crop, so as to improve the seed setting rate of ‘Feng dan’, and to predict the functional relationship between pollen vigor and seed setting rate. improving the efficiency of cross pollination. Three major steps were conducted, first, to screen the appropriate method of measuring pollen vigor of the paternal parent, which could have a strong relationship with seed setting rate. Second, to obtain the corresponding seed setting rate by cross pollination. Third, the functional relationship between two indexes was founded which could be used in cross pollination practice. Results indicated that the best paternal parents of ‘Feng dan’ were ‘Feng dan’ cultivars from other different cultivation populations; The most suitable medium concentration for pollen germination was 100~150 g/L sucrose, 0.06~0.08 g/L boric acid, and 50~200 g/L PEG-6000. Both the seed setting rate and the number of seed grains were positively correlated with the pollen activity, and the seed setting rate was negatively correlated with the local precipitation.
    Keywords sucrose ; boric acid ; PEG-6000 ; pollen germination ; seed setting rate ; Agriculture ; S ; Agriculture (General) ; S1-972
    Subject code 580
    Language English
    Publishing date 2021-07-01T00:00:00Z
    Publisher Universidade Federal de Santa Maria
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: Hydrophobic PVDF/graphene hybrid membrane for CO2 absorption in membrane contactor

    Wu, Xiaona / Bin Zhao / Hongwei Zhang / Liang Wang / Xingfei Guo / Xinhua Zhao / Zhaohui Zhang

    Journal of membrane science. 2016 Dec. 15, v. 520

    2016  

    Abstract: Graphene nanosheets were incorporated into polyvinylidene fluoride (PVDF) membrane in order to improve the membrane hydrophobicity. The hybrid membrane was prepared using the non-solvent induced phase separation method, and used in a membrane contactor ... ...

    Abstract Graphene nanosheets were incorporated into polyvinylidene fluoride (PVDF) membrane in order to improve the membrane hydrophobicity. The hybrid membrane was prepared using the non-solvent induced phase separation method, and used in a membrane contactor for CO2 absorption. The incorporation of graphene induced the PVDF crystal transformation from γ-form to α-form, and resulted in a more open and loose sub-layer structure. The hydrophobicity of the hybrid membrane was enhanced compared to the pristine PVDF membrane. However, the increase in the contact angle values with the graphene concentration only occurred for the bottom surface (i.e., the surface of the substrate interface). The CO2 absorption performance with water as the absorption solution was dependent on the membrane orientation. When the bottom surface of high roughness faced the absorption solution, the hybrid membrane exhibited a faster CO2 transfer. Due to the improvement in the membrane hydrophobicity, the wetting problem was significantly mitigated, and a long term run with high CO2 absorption efficiency could be guaranteed. Our results demonstrated that the incorporation of graphene is a promising approach to obtain hydrophobic PVDF membrane for gas membrane absorption.
    Keywords absorption ; artificial membranes ; carbon dioxide ; contact angle ; graphene ; hydrophobicity ; nanosheets ; roughness ; thermoplastics
    Language English
    Dates of publication 2016-1215
    Size p. 120-129.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 194516-6
    ISSN 0376-7388
    ISSN 0376-7388
    DOI 10.1016/j.memsci.2016.07.025
    Database NAL-Catalogue (AGRICOLA)

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