摘要
以12个抗旱性差异的花生品种为试验材料,于苗期进行正常供水和重度干旱胁迫处理,研究不同抗旱性花生品种对苗期干旱胁迫的生理响应,并分析品种抗旱性与各叶部性状的关系,探讨抗旱机制。结果表明:干旱胁迫下各参试品种的单株生物量明显降低。根据各品种单株生物量的抗旱系数得出,山花11号、如皋西洋生和A596抗旱性强,山花9号、农大818、海花1号、花育20、79266和花17抗旱性中等,蓬莱一窝猴、白沙1016和ICG6848抗旱性弱。花生品种叶部性状与抗旱机制密切相关,根据干旱条件下各叶部性状的变化规律可探讨品种的抗旱机制,山花11号具有较高的光合生产能力和御旱、耐旱性;如皋西洋生具有较好的御旱和避旱性;A596和花17则表现出节水型的抗旱机制;山花9号属于耗水型抗旱机制;海花1号具有较好的耐旱性;花育20和79266表现出避旱性的特征;蓬莱一窝猴和白沙1016具有耗水型御旱的特点;而ICG6848在以上性状的表现上不具有优势。
The objective of my experiment was to study the physiological response of different drought tolerant peanut varieties to water stress at the seedling stage ,to analyses the relationship of drought resistance with all related traits and to discuss the drought tolerant mechanisms .Twelve peanut varieties were tested and two kinds of water stress of contrast and severe drought stress was settled .The results showed that the single plant biomass of the tested peanut genotypes reduced significantly under drought stress .According to drought coefficient of biomass of single plant ,we concluded that the high drought resistant varieties consisted of Shanhua 11 , Rugao Xiyangsheng and A596.Shanhua 9,Nongda 818,Haihua 1,Huayu 20,79266 and Hua 17 had moderate drought resistance .Weak drought tolerant genotypes of peanut included Penglai Yiwohou ,Baisha 1016 and ICG6848 .There existed significant relationships between the drought resistant mechanisms with the drought relevant traits .We researched the drought resistant mechanisms of the varieties through changes of all the traits:Shanhua 11 had higher ability of photosynthet-ic production and drought resistance and drought tolerance;Rugao Xiyangsheng had better drought resistance and drought avoidance;A596 and Hua 17 showed higher water-saving mechanism;Shanhua 9 belonged to water con-sumption variety;Haihua 1 had better drought tolerance;Huayu 20 and 79266 put up drought avoidance;Penglai Yi-wohou and Baisha 1016 showed up water consumption mechanism;ICG6848 didn’t have obvious advantages on the performance of the performance of the above traits .
出处
《华北农学报》
CSCD
北大核心
2013年第S1期206-213,共8页
Acta Agriculturae Boreali-Sinica
基金
国家现代农业产业技术体系建设专项资金(CARS-14)
国家自然科学基金项目(31201167)
山东省花生良种产业化工程项目
关键词
花生
干旱
抗旱性
抗旱机制
Peanut
Drought
Drought resistance
Drought resistant mechanisms
