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《Sugarcane and Canesugar》 2017-04
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The Impact of Meterological Factors on Flower Bud Differentiation and Earing Rates of Sugarcane

ZHANG Wei;CHANG Hai-long;LIU Zhuang;WANG Qin-nan;QIU Yong-sheng;CHEN Jun-lü;HU Hou-xiang;ZHOU Feng;XU Huan-ying;LIU Shao-mou;Guangdong Provincial Bioengineering Institute (Guangzhou Sugarcane Industry Research Institute)/Guangdong Key Lab of Sugarcane Improvement & Biorefinery;Guangdong Sugarcane Germplasm Resources and Utilization of Scientific Observation Test Station, Ministry of Agriculture;  
A comparative analysis between phenological data of flower bud differentiation stage and meteorological data of temperature and humidity in the same period was conducted in 6 sugarcane varieties from Wuzhishan for 4 successive years. The result indicated that the difference of the period of sugarcane flower bud differentiation and tassel rations were significant or greatly significant in different years. The differences were related to the local climate condition during plant development. Within 40 days before flowering-beginning, lower temperature and higher humidity were beneficial to the floral initiation and differentiation. At sugarcane booting stage higher average temperature and humidity were advantageous to heading and significantly improved the earing rates, otherwise, leaded to flower bud slow differentiation and booting failure. The statistical results also suggested that moderate low temperature before differentiation was good for sugarcane flower bud differentiation.
【Fund】: 广东省科学院实施创新驱动发展能力建设专项(2017GDASCX-0105);广东省科学院科研平台环境与能力建设专项(2016GDASPT-0306);; 现代农业产业技术体系建设专项资金(CARS-20-1-6);; 广东省科技计划项目(2014A030304026?2014A030304027?2015A030302033);; 广东省农业厅项目(粤农计[2015]6号)
【CateGory Index】: S566.1
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