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Effects of Chemical Regulators on Photosynthetic Characters, Agronomic Characters and Yield Characters of Maize
Author(s): SHI Lei, YOU Dan, XIAO Wan-xin, ZHAO Hai-yan, XU Liang
Pages: 59-
63,70
Year: 2014
Issue:
5
Journal: Journal of Maize Sciences
Keyword: Maize; Chemical regulator; Photosynthetic rate; Morphological index; Yield;
Abstract: Effects of different chemical regulators and spraying periods on photosynthesis, morphological index-es and yield of thick planting, medium ear-type hybrid maize Liaodan1211 and thin planting, big ear-type hybrid maize Liaodan120 were studied. The results showed that the photosynthetic rate of ear leaf was all significantly in-creased by spraying chemical regulators at the filling stage. Photosynthetic rate of ear leaf of Liaodan 1211 and Liao-dan120 reached the highest values by spraying“Dun Tianbao”at leafage 9 and 12 respectively. Compared with CK, plant height and ear height of maize were reduced by spraying chemical regulators. Stem diameter of Liaodan 1211 was increased and internode length of that was shortened at“Kang Fengli”treatment, and internode length of maize was shortened at“Dun Tianbao”treatment. Results of yield data showed that the yield of Liaodan1211 was signifi-cantly improved by spraying“Dun Tianbao”at leafage 9, and Liaodan120 reached the highest yield by spraying“Kang Fengli”at leafage 12.
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