2006•Xibu linye kexueRequires access
Drought Resistance of Four Kinds of Gramineae Forage Grass
Lixin Zhang
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Abstract
Choosing plantule elongation speed 96 hours after treating with 20 % PEG,water absorption rate of seed and water stress index of seed germination as the indexes,the drought resistance of four kinds of Gramineae forage grasses namely Cynodon dactylon(L.) Pers.,Dactylis glomerata L.cv.Porto,Festuca arundinacea Schreb.cv.Demeter and Paspalum atratum was studied and evaluated.Using the plantule elongation speed 96 hours after treating with 20 % PEG as the evaluation index,the drought resistance of four kinds of forage grass was in the order of Festuca arundinacea Schreb.cv.Demeter Dactylis glomerata L.cv.Porto=Paspalum atratum Cynodon dactylon(L.) Pers.Using the water absorption rate of seed as the evaluation index,the drought resistance of four kinds of forage grass was in the order of Dactylis glomerata L.cv.Porto Paspalum atratum Festuca arundinacea Schreb.cv.Demeter Cynodon dactylon(L.) Pers.Using the water stress index of seed germination as the evaluation index,the drought resistance of four kinds of forage grass was in the order of Festuca arundinacea Schreb.cv.Demeter Cynodon dactylon(L.) Pers. Paspalum atratum = Dactylis glomerata L.cv.Porto.Evaluating the drought resistance of these four kinds of forage grass with comprehensive evaluation method,the order was Festuca arundinacea Schreb.cv.Demeter Dactylis glomerata L.cv.Porto Paspalum atratum Cynodon dactylon(L.) Pers.