以普通型品种农大108、郑单958和高淀粉型品种费玉3号、郑单18为试验材料, 研究玉米不同粒位子粒容重与子粒物理性状指标间的相关关系。结果表明, 高淀粉型玉米的容重高于普通型玉米, 不同粒位玉米子粒容重表现为下部子粒 >上部子粒 >中部子粒。相关分析结果表明, 玉米子粒容重与比重呈极显著正相关, 与单粒重呈显著正相关, 与粒长、粒长/粒宽、单粒体积以及盛装效率呈正相关, 但相关系数未达到显著水平。容重与漂浮率和子粒水分含量均呈显著负相关, 玉米上部、中部和下部子粒水分含量平均每下降一个百分点, 子粒容重平均上升5.10、5.41和5.63 g/L。
英文摘要:
In the present experiment, four maize cultivars(Nongda108 and Zhendan958 as common maize, Feiyu3 and Zhendan18 as high starch maize) were used to study and discuss the correlation between test weight and grain physical characters of apical, middle and basal grain. The reslult showed that the test weight of high starch maize was higher than that of normal maize. Test weight values of different grain positions expressed as basal grain > apical grain > middle grain. Correlation analysis showed that test weight was significantly and positively correlated with specific gravity and single grain weight. Meanwhile, test weight and grain length, grain length/width, single grain volume and packing efficiency were positively correlated, but the correlation coefficient could not reach significant levels. On the contrary, test weight was correlated with percent floater and percent water content after harvest significantly and negatively. With the percent water content decreasing, test weight was increasing. Each decreasing of percent water would result in 5.10, 5.41 and 5.63 g/L increasing of test weight in apical, middle and basal maize grain.
张丽,张吉旺,周伟,樊昕,刘鹏,董树亭.玉米不同粒位子粒容重与子粒物理性状的相关分析[J].玉米科学,2015,23(2):64~68
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