期刊名称：Advance Journal of Food Science and Technology
印刷版ISSN：2042-4868
电子版ISSN：2042-4876
出版年度：2012
卷号：4
期号：6
页码：409-412
出版社：MAXWELL Science Publication
摘要：Soil waterlogging has become a major natural disasters affecting cotton production. With a view to provide theoretical basis for the cultivation of cotton ( Gossypium hirsutum L.) resistant to adverse circumstance and increase production, pot experiment was conducted at the cotton seedlings stage and in the greenhouse to simulate the subsurface waterlogged field combined with high temperature synoptic condition after the rain. The experimental material was Jing hybrid cotton-88. Results indicated that: subsurface waterlogging significantly influences functional leaf's photosynthesis of cotton; chlorophyll SPAD value in cotton leaves changed slightly in the early adversity; on the sixth day, values of sub-9 days treatment increased abnormally; when the waterlogging stresses relieves, the chlorophyll SPAD value reduced significantly; red-green ratio responses to waterlogging stress is relatively lagging; with the prolonged of waterlogging stress, it decreased and then increased; Malondial Dehyde (MDA) content increased rapidly and lasted to a certain time; after release of the waterlogging, MDA content of sub-6 and 9 days treatment still maintained a higher level, and it had the remarkable difference with other treatments, indicated that the seedlings had suffered injury seriously; subsurface waterlogging stress could significantly decrease the activity of Superoxide Dismutase (SOD); after being transferred to outside the greenhouse, along with the arrival of new turn precipitation, the SOD activity of waterlogged plant showed an increasing tendency; Peroxidase (POD) activity had no significant difference between the 3 and 6 days treatment in the early adversity, as the prolonged waterlogging stresses, which of 6 days treatment remained at higher level. The POD activity expression times of sub-9 and sub-6 days treatment were in initial period and later period, respectively.
关键词：Cotton seedlings ; high temperature synoptic conditions ; physiological characteristics ; subsurface waterlogging ; ;
