| 戴凌燕,刘玉涛,殷奎德,王宇先,迟莉,张树权.玉米成熟过程中激素含量及其与子粒灌浆和脱水相关性分析[J].干旱地区农业研究,2017,35(3):120~125 |
| 玉米成熟过程中激素含量及其与子粒灌浆和脱水相关性分析 |
| Hormone contents of maize and their relationship with kernel filling and dehydration rate during maturation |
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| DOI：10.7606/j.issn.1000-7601.2017.03.19 |
| 中文关键词: 玉米 激素 灌浆速率 脱水速率 相关性 黑龙江省 半干旱区 |
| 英文关键词:maize hormone filling rate dehydration rate correlation Heilongjiang province semi-arid region |
| 基金项目:黑龙江省博士后科学资金项目(LBH-Z13187)；国家科技支撑计划(2013BAD07B01-05) |
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| 中文摘要: |
| 以先玉335和郑单958为材料，研究了黑龙江半干旱区玉米成熟过程中子粒和穗位叶中激素含量变化及其与子粒灌浆和脱水的相关性。结果显示，子粒中IAA、GA3和ZR含量与灌浆速率均呈正相关，且IAA达到极显著(P<0.01)，两品种相关系数分别为0.9506和0.9488；而穗位叶中ABA含量与灌浆速率呈负相关。子粒中ABA含量与子粒脱水速率呈负相关，IAA和ZR含量与子粒的脱水速率呈正相关，其中郑单958子粒中ZR含量与脱水速率相关性显著(P<0.05)，相关系数为0.8813；穗位叶中IAA、GA3、ZR和ABA含量与子粒脱水速率均呈负相关，先玉335穗位叶中ZR和ABA含量与脱水速率相关性显著(P<0.05)，相关系数分别为-0.9296和-0.9216；郑单958穗位叶中IAA含量则与脱水速率相关性显著(P<0.05)，相关系数为-0.8976。在半干旱春玉米区，玉米子粒灌浆速率主要与子粒中IAA、GA3、ZR和ABA等4种内源激素含量相关，而脱水速率则与子粒和穗位叶中各内源激素含量均相关。 |
| 英文摘要: |
| The experiments were conducted to determine content changes of indole-3-acetic acid (IAA), gibberellin-3(GA3), zeatin riboside (ZR) and abscisic acid (ABA) in kernels and ear leaves of two maize cultivars Xianyu 335 and Zhengdan 958, grown in semi-arid area of Heilongjiang province, and investigate the relationship between hormone and kernel filling and dehydration rate during maturation. The results indicated that the contents of IAA, GA3 and ZR in kernels were positively correlated with kernel filling rate, and IAA was significant (P<0.01) and correlation coefficient reached 0.9506 and 0.9488 in Xianyu 335 and Zhengdan 958, respectively. But the ABA content in ear leaves was negatively correlated with kernel filling rate. ABA content in kernels was negatively correlated with kernel dehydration rate. In addition, the contents of IAA and ZR in kernels were positively correlated with kernel dehydration rate. The correlation between ZR content in kernels of Zhengdan 958 and dehydration rate was significant (P<0.05), and the correlation coefficient was 0.8813. The contents of IAA GA3, ZR and ABA in ear leaves were all negatively correlated with kernel dehydration rate. The correlation between ZR and ABA content in ear leaves and dehydration rate in Xianyu 335 were significant (P<0.05), and the correlation coefficients were -0.9296 and -0.9216, respectively. The correlation between IAA content in ear leaves and dehydration rate in Zhengdan 958 was significant (P<0.05), and the correlation coefficient was -0.8976. In the semiarid region of spring maize, kernel filling rate of maize was largely correlated with its hormones including IAA, GA3, ZR and ABA, while its dehydration rate was mainly correlated with hormones both in kernels and the ear leaves. |
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