孕穗期冷水胁迫对早粳稻氮磷钾养分的影响  

Effect of Cold Stress at Booting Stage on Nitrogen,Phosphorus and Potassium of Early Japonica Rice

作　　者：王士强 杨善伟 赵海红[2] 贺登美 衣玉卓 付永明 郑树生[4] 杜庭庭 谷天月 唐欣然 汪洋 韩亦 Wang Shiqiang;Yang Shanwei;Zhao Haihong;He Dengmei;Yi Yuzhuo;Fu Yongming;Zheng Shusheng;Du Tingting;Gu Tianyue;Tang Xinran;Wang Yang;Han Yi(College of Agronomy,Heilongjiang Bayi Agricultural University,Daqing163319;Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences;Jiamusi Academy and Rural Bureau;Laboratory Equipment Management Center,Heilongjiang Bayi Agricultural University)

机构地区：[1]黑龙江八一农垦大学农学院,大庆163319 [2]黑龙江省农业科学院 [3]黑龙江省佳木斯市农业农村局 [4]黑龙江八一农垦大学实验设备管理中心

出　　处：《黑龙江八一农垦大学学报》2023年第1期1-6,45,共7页journal of heilongjiang bayi agricultural university

基　　金：黑龙江省大庆市指导性科技计划项目(zd-2020-43);黑龙江八一农垦大学学成、引进人才科研启动计划项目(XYB201906);国家大学生创新创业项目(202110223009);2021年度黑龙江八一农垦大学教学研究课题(NDJY1601);黑龙江省农垦总局重点科研项目指导计划(HKKYZD190203);黑龙江八一农垦大学试验示范基地项目(2041200152)。

摘　　要：为探明在孕穗期冷水胁迫下不同耐冷性早粳稻氮磷钾养分的变化规律,选用30份黑龙江省品种(系),在孕穗期平均17℃冷水灌溉20 d的试材为低温处理,按结实率CRI值进行耐冷性分级,研究冷水胁迫下抽穗期植株氮磷钾积累及其与早粳稻耐冷性的关系。结果表明,冷水处理导致所有材料茎、鞘和叶片中氮含量,茎和鞘中磷和钾含量下降,其中冷水胁迫对茎中氮含量影响最大,其次是鞘中氮含量,并且耐冷性弱和极弱的材料茎和鞘中氮、磷和钾含量,叶片中氮含量较耐冷性极强和强的材料更容易受到冷胁迫的影响。冷水胁迫对不同器官氮、磷和钾含量影响不同,其大小顺序为:茎>鞘>叶片。相关分析表明,抽穗期鞘中氮含量与结实率、每穴实粒数、产量的CRI值呈显著正相关;茎中磷含量与产量和千粒重的CRI值呈显著正相关;茎中钾含量与每穴实粒数和产量的CRI值呈显著正相关,可见,鞘中氮含量和茎中磷和钾含量可作为寒地早粳稻孕穗期耐冷性鉴定的辅助指标。The objective of the study was to determine the nitrogen,phosphorus,and potassium of early japonica rice at different grade of tolerance to chilling under cold water stress.In this study,nitrogen,phosphorus,and potassium responses of plant were investigated using 30 early japonica rice cultivars and advanced lines from Heilongjiang Province under cold water stress at the booting stage.Our results showed that the contents of nitrogen in stem,sheath,and leaf,and the contents of phosphorus and potassium in stem and sheath decreased,and they were affected more sensitively in cultivars 7 and 9 under cold water stress than cultivars 1and 3,and additionally,the nitrogen content of stem had the greatest influence under cold water stress,followed by content of nitrogen in sheath.Cold water stress on the nitrogen,phosphorus and potassium had the biggest influence in stem,and they were the second one in sheath,the content of nitrogen,phosphorus and potassium in leaf were the third one.The correlation analysis results showed that the sheath nitrogen content was significantly positively correlated with the CRI of seed-setting rate,filled grain number per cave,and yield of per cave.Such content of stem potassium was also significantly,positively correlated with the CRI of the filled grain number per cave and yield of per cave.Such stem phosphorus content was also significantly,positively correlated with the CRI of the 1000-grain weight and yield of per cave,and the content of stem potassium was also significantly,positively correlated with the CRI of the filled grain number per cave and yield of per cave.And the result showed suggesting that the contents of nitrogen in sheath,phosphorus and potassium in stem can be used as a good indicator for cold tolerance screening of early japonica rice at booting stage.

关 键 词：早粳稻 孕穗期 冷水胁迫 氮 磷 钾 

分 类 号：Q78[生物学—分子生物学]