| 干旱胁迫对木薯K+、Ca2+和ABA的影响 |
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| 引用本文： | 杨子,曾长英,王斌,杨仪伶,卢诚,彭明. 干旱胁迫对木薯K+、Ca2+和ABA的影响[J]. 热带作物学报, 2013, 34(9): 1725-1729 |
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| 作者姓名： | 杨子 曾长英 王斌 杨仪伶 卢诚 彭明 |
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| 作者单位： | 1 海南大学农学院2 中国热带农业科学院热带生物技术研究所;中国热带农业科学院热带生物技术研究所;中国热带农业科学院热带生物技术研究所;中国热带农业科学院热带生物技术研究所;中国热带农业科学院热带生物技术研究所;中国热带农业科学院热带生物技术研究所 |
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| 基金项目： | 国家973项目“重要热带作物木薯品种改良的基础研究”（No. 2010CB126602）；国家自然基金“木薯耐低温性相关miRNA的筛选及其功能分析”（No. 31101193）；中央级公益性科研院所基本科研业务费专项“木薯抗旱相关非编码RNA研究”（No. ITBB130101）；海南省自然科学基金“抗旱相关候选基因核苷酸多样性与木薯抗旱性状的关联分析”（No. 313075）；海南省重大科技项目子课题热带生物种质与基因资源研究（No. ZDZX2013023-1）。 |
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| 摘 要： | 为了研究干旱胁迫木薯K+、Ca2+和ABA对干旱胁迫的响应及其变化规律，对2个品种的木薯SC124（高抗）和KU50（低抗）进行对照、驯化、非驯化旱害和驯化旱害等不同方式的干旱处理。研究发现2个木薯品种中，干旱胁迫对叶片K+和ABA的含量影响较大，而Ca2+含量变化较小；SC124在驯化和非驯化处理下的K+含量发生显著变化；ABA的含量在2个品种中的驯化干旱和非驯化干旱中变化显著，且变化趋势不同；干旱胁迫下，ABA、K+和Ca2+之间存在显著相关性。
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| 关 键 词： | K+；Ca2+；ABA；驯化；相关性 |
Effect of Drought Stress on K+, Ca2+ and ABA Content in Cassava |
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| YANG Zi,ZENG Changying,WANG Bin,YANG Yiling,LU Cheng and PENG Ming. Effect of Drought Stress on K+, Ca2+ and ABA Content in Cassava[J]. Chinese Journal of Tropical Crops, 2013, 34(9): 1725-1729 |
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| Authors: | YANG Zi ZENG Changying WANG Bin YANG Yiling LU Cheng PENG Ming |
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| Affiliation: | 1 College of Agronomy, Hainan University2 Institute of Tropical Bioscience and Biotechnology, CATAS;Institute of Tropical Bioscience and Biotechnology, CATAS;Institute of Tropical Bioscience and Biotechnology, CATAS;Institute of Tropical Bioscience and Biotechnology, CATAS;Institute of Tropical Bioscience and Biotechnology, CATAS;Institute of Tropical Bioscience and Biotechnology, CATAS |
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| Abstract: | In order to figure out the responses of K+, Ca2+ and ABA to drought stress in cassava, two Cassava(Manihot esculenta Crantz)varieties, SC124(highly resistance)and KU50(lowly resistance)were subjected to four different treatments of drought control, drought acclimatization, drought treatments after drought acclimatization and direct severe drought stress. The results showed that drought treatments had significant differences on K+ and ABA content in the two varieties, while less significant differences on Ca2+; In detail, K+ content of SC124 had significant difference between DH and DNH treatments, ABA content of the two varieties showed significant differences with different trends between DH and DNH; Moreover, the correlation co-efficient was significant among K+, Ca2+ and ABA when cassava suffered drought stress. |
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| Keywords: | K+ Ca2+ ABA Acclimatization Relativity |
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