| 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 |
| Key Words: maize hormone filling rate dehydration rate correlation Heilongjiang province semi-arid region |
| Author Name | Affiliation | | DAI Ling-yan | Heilongjiang Academy of Agricultural Sciences Postdoctoral Programme, Heilongjiang Harbin 150086, China
College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Heilongjiang Daqing 163319, China | | LIU Yu-tao | Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Heilongjiang Qiqihar 161006, China | | YIN Kui-de | College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Heilongjiang Daqing 163319, China | | WANG Yu-xian | Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Heilongjiang Qiqihar 161006, China | | CHI Li | Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Heilongjiang Qiqihar 161006, China | | ZHANG Shu-quan | Industrial Crops Institute, Heilongjiang Academy of Agricultural Sciences, Heilongjiang Harbin 150086, China |
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| Abstract: |
| 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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