Comparative effects of cold air and cold water stress on chlorophyll parameters in rice (Oryza sativa L.) Journal title: International Journal of Farming and Allied Sciences Authors: Zobeideh Hasani, Hemmatollah Pirdashti, Yasser Yaghoubian and Mohammad Zaman Nouri Subject(s): Agricultural Science, Biochemistry, Plant Sciences, Soil Sciences, Zoology and Animal Science, Agricultural Economics