Influence of Nostoc entophytum and Tetracystis sp. on Winter Survival of Rapeseed  

作　　者：Jacint Toth Istvan Gergely Zoltan Berzsenyi Vince Ordog 

机构地区：[1]Department of Plant Sciences,Faculty of Agricultural and Food Science,Szechenyi Istvan University,Mosonmagyarovar,Gyor-Moson-Sopron 9200,Hungary [2]Department of Plant Production and Plant Protection,Faculty of Agricultural and Environmental Sciences,Kaposvar University,Kaposvar 7400,Hungary [3]Research Centre for Plant Growth and Development,University of KwaZulu-Natal,Pietermaritzburg,P/Bag X01,Scottsville 3209,South Africa

出　　处：《Journal of Agricultural Science and Technology(B)》2019年第4期251-271,共21页农业科学与技术（B）

摘　　要：Bioassay results proved that several microalgae strains of the Mosonmagyaróvár Algal Culture Collection (MACC) enhanced plant growth, due to their hormone content and other secondary metabolites. The aim of the current research was to improve autumn growth and winter survival of rapeseed (Brassica napus L.) by treatment with two microalgae strains selected by bioassay results. Experimental plots were set up in Mosonmagyaróvár in 2010 and 2013. Winter rapeseed hybrid (B. napus L. cv. Orlando) plants were treated in 4-6 leaves stage with 0.3 g/L and 1 g/L suspensions of MACC-612 Nostoc entophytum Bornet & Flahault and MACC-430 Tetracystis sp. in middle of October. After the treatments, the following parameters were recorded: chlorophyll-a and b, carotenoid, dry matter content of leaves, average amount of autumn foliage, diameter of root collar, length of shoot tips, fresh and dry weight of root, and number of plants in autumn and spring. Both microalgae treatments significantly increased pigment concentration and dry matter content of leaves, number of fully grown leaves (13%-46%) and dry root weight (16%-36%). Treatments with 0.3 g/L and 1 g/L MACC-612 suspensions increased the length of shoot apices by 14%-18% and 25%-35%, respectively. Number of overwintered control plants decreased significantly in both years (31%), but there was no decrease in parcels treated with 1 g/L of MACC-612 and MACC-430. Microalgae treatments could increase plant growth and survival, which contributed to the significant increase of thousand seed weight (18%-25%) and total yield (by 10%-24%).

关 键 词：Microalgae PHOTOSYNTHETIC pigments WINTER OILSEED RAPE WINTER survival 

分 类 号：S[农业科学]