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- W3149757181 abstract "Drought tolerance traits of 14 widely used Chinese rice maintainers were evaluated at flowering stages using both soil moisture meter and drying soil methods.Based on their drought-stress-caused fertility injury and water-supplying remedy,four ranks were classified as drought-insensitive,drought-resistant,drought-friability and drought-sensitive.Typical drought-insensitive maintainers K22-B,Jin 23-B and typical drought-sensitive maintainers Zhenshan 97-B,Zhong 9-B were selected to suffer drought treatments and to study their physiological responses to drought.The results indicated that the water potential of reproductive organs and flag-leaf transpiration rate were decreased by drought,but when compared with the drought-sensitive maintainers,the drought-insensitive maintainers showed a higher water potential which was decreased relatively slower with drought enhancing.There was no difference of photosynthetic rate between drought-insensitive and drought-sensitive maintainers under normal water condition,but the photosynthetic rate was decreased by drought treatment,and the decreases were bigger for drought-sensitive maintainers than for drought-insensitive maintainers.There was no significant difference between the two types of maintainers in pollen and anther number in drought condition(P0.05),and in pollen-fullness and germination rate on stigma.However,pollen number on stigma and opening degree of anther were decreased more in drought-sensitive maintainers than in drought-insensitive maintainers.Therefore,the drought-insensitive maintainers have a higher photosynthesis and higher photosynthate transportation efficiency than drought-sensitive maintainers." @default.
- W3149757181 created "2021-04-13" @default.
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- W3149757181 date "2010-01-01" @default.
- W3149757181 modified "2023-09-23" @default.
- W3149757181 title "Physiological Characteristics of Drought-Sensitive and Drought-Insensitive Rice Maintainers at Florescence under Drought Stress" @default.
- W3149757181 hasPublicationYear "2010" @default.
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